Claims
- 1. A substrate which is coated with a coating composition comprising a copolymer wherein the improvement comprises using as said copolymer a copolymer formed by the copolymerization of 100 parts by weight of a curable polyurethane resin and 10 to 100 parts by weight o an organosilicon compound, consisting essentially of tetravalent SiO.sub.2 units and monovalent R.sub.3 SiO.sub.1/2 and R'R.sub.2 ; SiO.sub.1/2 units, wherein the ratio of monovalent units to tetravalent units is from 0.4/1 to 2/1 and from 40 to 90% of all monovalent units present in the organosilicon compound are R'R.sub.2 SiO.sub.1/2 units wherein R denotes a monovalent hydrocarbon group having up to 8 carbon atoms and R' denotes a polyoxyalkylene group which is terminated by a hydroxyl group.
- 2. A substrate according to claim 1, wherein the substrate is a textile fabric.
- 3. A substrate according to claim 1, wherein the polyurethane resin is an aqueous two component polyurethane resin composition having a solids content in the range from 35 to 50% by weight.
- 4. A substrate according to claim 1, wherein the polyurethane resin is a solvent based two component polyurethane resin composition having a solids content in the range from 35 to 50% by weight.
- 5. A substrate according to claim 1, wherein in the group R' at least 80% of all the oxyalkylene groups are oxyethylene groups and all polyoxyalkylene groups are attached to a silicon atom via SiC bonds.
- 6. A substrate according to claim 1, wherein the polyoxyalkylene groups have a molecular weight of from 300 to 1000.
- 7. A substrate according to claim 1, wherein the ratio of monovalent to tetravalent siloxane units in the organosilicon compound is from 1.3/1 to 1.8/1.
- 8. A substrate according to claim 1, wherein 15 to 70 parts of the organosilicon compound are used for every 100 parts by weight of the polyurethane resin.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9009409 |
Apr 1990 |
GBX |
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Parent Case Info
This is a divisional of copending application Ser. No. 07/932,821 filed on Aug. 20, 1992, U.S. Pat. No. 5,266,403 which is a divisional of 07/672,993 filed Mar. 21, 1991, U.S. Pat. No. 5,169,906.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5169906 |
Cray et al. |
Dec 1992 |
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Divisions (2)
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Number |
Date |
Country |
Parent |
932821 |
Aug 1992 |
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Parent |
672993 |
Mar 1991 |
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