US6183872B1
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Silicon-containing organic fluoropolymers and use of the same
Assignee: Daikin Industries Ltd
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Filing: 1996-08-12
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Granted: 2001-02-06
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Expires: 2016-08-12
Abstract
Abstract Novel silicon-containing organic fluoropolymers which are appliable to materials over a wide range and which have excellent antifouling property. The silicon-containing organic fluoropolymer of the invention is represented by the general formula and has a number average molecular weight of from 5x102 to 1x105:wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R1 represents hydroxy or a hydrolyzable substituent group; R2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n represents an integer of 2 or above.
Inventors
- 👤 Yuji Tanaka
- 👤 Hitoharu Hachisuka
- 👤 Takuya Arase
- 👤 Yoshio Negishi
- 👤 Masayoshi Tatemoto
- 👤 Tetsuo Shimizu
- 👤 Sadaatsu Yamaguchi
- 👤 Keizo Desaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:06
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/336; C08G65/002; C08G65/005; C08G65/007; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
142 words
A silicon-containing organic fluoropolymer represented by the general formula (I), which comprises having a number average molecular weight of from 5×10 2 to 1×10 5 : wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n represents an integer of 2 or above.
Claim 2
Dependent Claim
142 words
A silicon-containing organic fluoropolymer represented by the general formula (I), which comprises having a number average molecular weight of from 5×10 2 to 1×10 5 : wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n represents an integer of 2 or above.
Claim 3
Dependent Claim
182 words
A mixture of silicon-containing organic fluoropolymers represented by the general formula (Ia) and having a number average molecular weight of from 5×10 2 to 1×10 5 , wherein g is 0 or an integer of 1 or above and the mean value of the g is greater than 1 in said mixture provided said mixture of silicon-containing organic fluoropolymers contains a silicon-containing organic fluoropolymer wherein the g is an integer of 2 or above: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
Claim 4
Dependent Claim
182 words
A mixture of silicon-containing organic fluoropolymers represented by the general formula (Ia) and having a number average molecular weight of from 5×10 2 to 1×10 5 , wherein g is 0 or an integer of 1 or above and the mean value of the g is greater than 1 in said mixture provided said mixture of silicon-containing organic fluoropolymers contains a silicon-containing organic fluoropolymer wherein the g is an integer of 2 or above: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
Claim 5
Dependent Claim
99 words
The silicon-containing organic fluoropolymer according to claim 1 , which is a polymer represented by the general formula (II) and having a number average molecular weight of from 5×10 2 to 1×10 5 : wherein p represents an integer of 1 or above; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n represents an integer of 2 or above.
Claim 6
Dependent Claim
131 words
A mixture of silicon-containing organic fluoropolymers represented by the general formula (IIa) and having a number average molecular weight of from 5×10 2 to 1×10 5 , wherein g is 0 or an integer of 1 or above and the mean value of the g is greater than 1 in said mixture, provided said mixture of silicon-containing organic fluoropolymers contains a silicon-containing organic fluoropolymer wherein the g is an integer of 2 or above: wherein p represents an integer of 1 or above; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
Claim 7
Dependent Claim
131 words
A mixture of silicon-containing organic fluoropolymers represented by the general formula (IIa) and having a number average molecular weight of from 5×10 2 to 1×10 5 , wherein g is 0 or an integer of 1 or above and the mean value of the g is greater than 1 in said mixture, provided said mixture of silicon-containing organic fluoropolymers contains a silicon-containing organic fluoropolymer wherein the g is an integer of 2 or above: wherein p represents an integer of 1 or above; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
Claim 8
Dependent Claim
137 words
A process for preparing the silicon-containing organic fluoropolymer according to claim 1 , which comprises reacting an iodine-terminated organic fluoropolymer represented by the general formula; wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; with a vinylsilane compound represented by the general formula: wherein Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
Claim 9
Dependent Claim
139 words
A process for preparing the mixture of silicon-containing organic fluoropolymers according to claim 2 , which comprises reacting an iodine-terminated organic fluoropolymer represented by the general formula; wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; with a vinylsilane compound represented by the general formula: wherein Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
Claim 10
Dependent Claim
161 words
A surface-treating method for a substrate, which comprises coating the substrate surface with a treating solution comprising (1) a silicon-containing organic fluoropolymer represented by the general formula (Ix), (2) a fluorine-containing organic solvent and (3) a silane compound excepting said silicon-containing organic fluoropolymer (1): wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 11
Dependent Claim
161 words
A surface-treating method for a substrate, which comprises coating the substrate surface with a treating solution comprising (1) a silicon-containing organic fluoropolymer represented by the general formula (Ix), (2) a fluorine-containing organic solvent and (3) a silane compound excepting said silicon-containing organic fluoropolymer (1): wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 12
Dependent Claim
177 words
A surface-treating method for a substrate, which comprises coating the substrate surface with a treating solution (N) comprising (3) a silane compound excepting a silicon-containing organic fluoropolymer (1) represented by the general formula (Ix) for forming an under-layer, and then coating the under-layer with a treating solution (M) comprising (1) the silicon-containing organic fluoropolymer and (2) a fluorine-containing organic solvent: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 13
Dependent Claim
177 words
A surface-treating method for a substrate, which comprises coating the substrate surface with a treating solution (N) comprising (3) a silane compound excepting a silicon-containing organic fluoropolymer (1) represented by the general formula (Ix) for forming an under-layer, and then coating the under-layer with a treating solution (M) comprising (1) the silicon-containing organic fluoropolymer and (2) a fluorine-containing organic solvent: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 14
Dependent Claim
149 words
A surface-treating composition which comprises (1) a silicon-containing organic fluoropolymer represented by the general formula (Ix), (2) a fluorine-containing organic solvent and (4) an organic solvent excepting said fluorine-containing organic solvent (2): wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 15
Dependent Claim
149 words
A surface-treating composition which comprises (1) a silicon-containing organic fluoropolymer represented by the general formula (Ix), (2) a fluorine-containing organic solvent and (4) an organic solvent excepting said fluorine-containing organic solvent (2): wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 16
Dependent Claim
21 words
The surface-treating composition according to claim 9 , wherein the organic solvent (4) excepting the fluorine-containing organic solvent (2) is alcohols.
Claim 17
Dependent Claim
132 words
An anti-icing agent which comprises a silicon-containing organic fluoropolymer represented by the general formula (Ix): wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 18
Dependent Claim
132 words
An anti-icing agent which comprises a silicon-containing organic fluoropolymer represented by the general formula (Ix): wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 19
Dependent Claim
152 words
A water-repellent glass member which comprises a glass substrate and, as formed on the glass surface, a layer of a silicon-containing organic fluoropolymer represented by the general formula (Ix), and which is used in vehicles: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 20
Dependent Claim
152 words
A water-repellent glass member which comprises a glass substrate and, as formed on the glass surface, a layer of a silicon-containing organic fluoropolymer represented by the general formula (Ix), and which is used in vehicles: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 1 or above.
Claim 21
Dependent Claim
159 words
An antifouling substrate which comprises a substrate and, as formed on the surface thereof, a layer of a silicon-containing organic fluoropolymer represented by the general formula (Ix) and having a number average molecular weight of from 5×10 2 to 1×10 5 : wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 2 or above.
Claim 22
Dependent Claim
159 words
An antifouling substrate which comprises a substrate and, as formed on the surface thereof, a layer of a silicon-containing organic fluoropolymer represented by the general formula (Ix) and having a number average molecular weight of from 5×10 2 to 1×10 5 : wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 2 or above.
Claim 23
Dependent Claim
200 words
A process for preparing an antifouling substrate, which comprises coating the substrate surface with a treating solution comprising a mixture of silicon-containing organic fluoropolymers represented by the general formula (Ia) and having a number average molecular weight of from 5×10 2 to 1×10 5 , wherein g is 0 or an integer of 1 or above and the mean value of the g is greater than 1 in said mixture provided said mixture of silicon-containing organic fluoropolymers contains a silicon-containing organic fluoropolymer wherein the g is an integer of 2 or above: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
Claim 24
Dependent Claim
200 words
A process for preparing an antifouling substrate, which comprises coating the substrate surface with a treating solution comprising a mixture of silicon-containing organic fluoropolymers represented by the general formula (Ia) and having a number average molecular weight of from 5×10 2 to 1×10 5 , wherein g is 0 or an integer of 1 or above and the mean value of the g is greater than 1 in said mixture provided said mixture of silicon-containing organic fluoropolymers contains a silicon-containing organic fluoropolymer wherein the g is an integer of 2 or above: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
Claim 25
Dependent Claim
146 words
A water-repellent glass member which comprises a glass substrate and, as formed on the glass surface, a layer of a silicon-containing organic fluoropolymer represented by the general formula (Ix): wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 2 or above.
Claim 26
Dependent Claim
146 words
A water-repellent glass member which comprises a glass substrate and, as formed on the glass surface, a layer of a silicon-containing organic fluoropolymer represented by the general formula (Ix): wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R 2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n x represents an integer of 2 or above.
Claim 27
Dependent Claim
200 words
A process for preparing a water-repellent glass member, which comprises coating the glass surface with a treating solution comprising a mixture of silicon-containing organic fluoropolymers represented by the general formula (Ia) and having a number average molecular weight of from 5×10 2 to 1×10 5 , wherein g is 0 or an integer of 1 or above and the mean value of the g is greater than 1 in said mixture provided said mixture of silicon-containing organic fluoropolymers contains a silicon-containing organic fluoropolymer wherein the g is an integer of 2 or above: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
Claim 28
Dependent Claim
200 words
A process for preparing a water-repellent glass member, which comprises coating the glass surface with a treating solution comprising a mixture of silicon-containing organic fluoropolymers represented by the general formula (Ia) and having a number average molecular weight of from 5×10 2 to 1×10 5 , wherein g is 0 or an integer of 1 or above and the mean value of the g is greater than 1 in said mixture provided said mixture of silicon-containing organic fluoropolymers contains a silicon-containing organic fluoropolymer wherein the g is an integer of 2 or above: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R 1 represents hydroxy or a hydrolyzable substituent group; R2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; and m represents 1, 2 or 3.
References Cited (Backward Citations)
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| 7.5 Years (Year 8) | 2008-02-06 | 2008-08-07 | 2009-02-06 | $3760.00 | Window Closed / Lapsed |
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