US5952444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane coating resin composition
Assignee: JNC Corp
•
Filing: 1997-09-08
•
Granted: 1999-09-14
•
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 07:11
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.
References Cited (Backward Citations)
US3243475A
Cited
JPS60238315A
Cited
JPS61176639A
Cited
JPS63470A
Cited
US4839443A
Cited
JPS6411117A
Cited
JPH01249821A
Cited
US5045599A
Cited
JPH06116390A
Cited
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 |