Patent US5952444A successfully refreshed from Google Patents.
US5952444A
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Polyurethane coating resin composition
Assignee: JNC Corp
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Filing: 1997-09-08
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Granted: 1999-09-14
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Expires: 2017-09-08
Abstract
Abstract According to the present invention, there are here disclosed a polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule which is obtainable by reacting (A) a polydimethylsiloxane having an alkyl group on one terminal and 2 hydroxyl groups in the vicinity of the other terminal with (B) a polyisocyanate having 2 or more isocyanate groups in one molecule; a coating resin composition which is obtainable by reacting a polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule with a hydroxyl group-containing resin; and a method for curing the coating resin composition.
Inventors
- 👤 Koichi Ayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/61; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8009; C08G18/8022; C08G18/8025; C09; C09D; C09D175/00; C09D175/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
56 words
A polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule which is obtained by reacting (A) a polydimethylsiloxane having an alkyl group on one terminal and 2-hydroxyl groups on the other terminal with (B) a polyisocyanate having more than two isocyanate groups in one molecule.
Claim 2
Dependent Claim
56 words
A polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule which is obtained by reacting (A) a polydimethylsiloxane having an alkyl group on one terminal and 2-hydroxyl groups on the other terminal with (B) a polyisocyanate having more than two isocyanate groups in one molecule.
Claim 3
Dependent Claim
91 words
The polyurethane resin derivative according to claim 1 wherein the polydimethylsiloxane (A) is represented by the general formula (1) ##STR8## wherein R 1 is an alkyl group having 1 to 4 carbon atoms; R 2 is an ethylene group or a propylene group; R 3 is a hydrogen atom, a methyl group or an ethyl group; R 4 is a hydroxyl group or a methylhydroxyl group; n is an integer of 0 to 100; p is an integer of 0 to 100; and m is an integer of 2 to 9.
Claim 4
Dependent Claim
38 words
The polyurethane resin derivative according to claim 1 or 2 wherein the polyisocyanate (B) is represented by the general formula (2) ##STR9## wherein Et is an ethyl group; and R 5 is --(CH 2 ) 6 --, ##STR10##
Claim 5
Dependent Claim
140 words
A polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule which is obtained by reacting the polydimethylsiloxane represented by the general formula (1) wherein R 1 is an alkyl group having 1 to 4 carbon atoms; R 2 is an ethylene group or a propylene group; R 3 is a hydrogen atom, a methyl group or an ethyl group; R 4 is a hydroxyl group or a methylhydroxyl group; n is an integer of 0 to 100; p is an integer of 0 to 100; and m is an integer of 2 to 9, with the polyisocyanate represented by the general formula (2) ##STR11## wherein Et is an ethyl group; and R 5 is --(CH 2 ) 6 --, ##STR12## in a molar ratio (1):(2) of 1.4:1 to 1:10.
Claim 6
Dependent Claim
140 words
A polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule which is obtained by reacting the polydimethylsiloxane represented by the general formula (1) wherein R 1 is an alkyl group having 1 to 4 carbon atoms; R 2 is an ethylene group or a propylene group; R 3 is a hydrogen atom, a methyl group or an ethyl group; R 4 is a hydroxyl group or a methylhydroxyl group; n is an integer of 0 to 100; p is an integer of 0 to 100; and m is an integer of 2 to 9, with the polyisocyanate represented by the general formula (2) ##STR11## wherein Et is an ethyl group; and R 5 is --(CH 2 ) 6 --, ##STR12## in a molar ratio (1):(2) of 1.4:1 to 1:10.
Claim 7
Dependent Claim
39 words
A coating resin composition which is obtained by reacting a polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule according to claim 1 with a hydroxyl group-containing resin.
Claim 8
Dependent Claim
51 words
The coating resin composition according to claim 5 wherein the polyurethane resin derivative is obtained by reacting (A) a polydimethylsiloxane having an alkyl group on one terminal and 2 hydroxyl groups on the other terminal with (B) a polyisocyanate having more than two isocyanate groups in one molecule as essential components.
Claim 9
Dependent Claim
91 words
The coating resin composition according to claim 6 wherein the polydimethylsiloxane (A) is represented by the general formula (1) ##STR13## wherein R 1 is an alkyl group having 1 to 4 carbon atoms; R 2 is an ethylene group or a propylene group; R 3 is a hydrogen atom, a methyl group or an ethyl group; R 4 is a hydroxyl group or a methylhydroxyl group; n is an integer of 0 to 100; p is an integer of 0 to 100; and m is an integer of 2 to 9.
Claim 10
Dependent Claim
36 words
The coating resin composition according to claim 6 wherein the polyisocyanate (B) is represented by the general formula (2) ##STR14## wherein Et is an ethyl group; and R 5 is --(CH 2 ) 6 --, ##STR15##
Claim 11
Dependent Claim
131 words
The coating resin composition according to claim 5 wherein the polyurethane resin derivative is obtained by reacting the polydimethylsiloxane represented by the general formula (1) wherein R 1 is an alkyl group having 1 to 4 carbon atoms; R 2 is an ethylene group or a propylene group; R 3 is a hydrogen atom, a methyl group or an ethyl group; R 4 is a hydroxyl group or a methylhydroxyl group; n is an integer of 0 to 100; p is an integer of 0 to 100; and m is an integer of 2 to 9, with the polyisocyanate represented by the general formula (2) ##STR16## wherein Et is an ethyl group; and R 5 is --(CH 2 ) 6 --, ##STR17## in a molar ratio (1):(2) of 1.6:1 to 1:10.
Claim 12
Dependent Claim
34 words
The coating resin composition according to claim 5 wherein the hydroxyl group-containing resin is an acrylpolyol, a fluorine-containing polyol, a polyoxyalkylene, a polyesterpolyol, a polyvinyl alcohol or a mixture of two or more thereof.
Claim 13
Dependent Claim
61 words
The coating resin composition according to claim 5 wherein a blend ratio between the hydroxyl group-containing resin and the polyurethane resin derivative in the reaction thereof is such that a ratio of the isocyanate group in the polyurethane resin derivative is in the range of 0.1 to 10 mol % with respect to the hydroxyl group in the hydroxyl group-containing resin.
Claim 14
Dependent Claim
53 words
A coating resin composition which is obtained by adding a hydroxyl group-containing resin to a reaction product of a polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule according to claim 1 with a polyoxyalkylene having one hydroxyl group in one molecule.
Claim 15
Dependent Claim
34 words
The coating resin composition according to claim 12 wherein the hydroxyl group-containing resin is an acrylpolyol, a fluorine-containing polyol, a polyoxyalkylene, a polyesterpolyol, a polyvinyl alcohol or a mixture of two or more thereof.
Claim 16
Dependent Claim
37 words
A method for curing a coating resin composition which comprises the steps of adding a polyisocyanate having 2 or more isocyanate groups in one molecule to a coating resin composition described in claim 5 to accomplish crosslinking.
Claim 17
Dependent Claim
59 words
The method for curing a coating resin composition according to claim 14 wherein a blend ratio between the coating resin composition and the polyisocyanate is such that a ratio of an isocyanate group in the polyisocyanate is in the range of 0.3 to 2.0 mol with respect to 1 mol of the hydroxyl group in the coating resin composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-09-13 | 2003-03-15 | 2003-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-13 | 2007-03-15 | 2007-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-13 | 2011-03-15 | 2011-09-14 | $7700.00 | Window Closed / Lapsed |