Claims
- 1. In an improved one component coating composition for providing a clear coating on a substrate, the improvement comprising said composition being free of any hydrazide component and free of a pigment, and said composition consisting essentially of an isocyanate-reactive polymer, a polar aliphatic or polar aromatic solvent, a catalyst, and a blocked polyisocyanate having a pyrazole compound as a blocking agent, said polyisocyanate being selected from the group consisting of isocyanurates of 1,6-hexamethylene diisocyanate, 1,6-hexamethylene diisocyanate biuret, isocyanurates of isophorone diisocyanate, isophorone diisocyanate biuret, and combinations thereof, said blocked polyisocyanate being present in said coating composition in an amount of from about 15 to about 40 weight percent, said solvent being present in said coating composition in an amount of from about 30 to about 50 weight percent, said catalyst being present in said coating composition in an amount of from 0.01 weight percent to about 10 weight percent.
- 2. The coating composition of claim 1 wherein said catalyst is dibutyltindilaurate.
- 3. The coating composition of claim 1 wherein said solvent comprises a solvent blend of butyl acetate, methyl amyl ketone, and ethyoxyethyl propionate.
- 4. The coating composition of claim 3 wherein said blend comprises a 1:1:1 weight ratio of said butyl acetate to said methyl amyl ketone to said ethyoxyethyl propionate.
Parent Case Info
This application is a division of application Ser. No. 08/116,945, filed Sep. 3, 1993.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
159117 |
Oct 1985 |
EPX |
2153346 |
Aug 1985 |
GBX |
Non-Patent Literature Citations (1)
Entry |
The Chemistry and Technology of Blocked Isocyanates. Cooray et al, Paint and Resin, Oct. 1988, pp. 18-19. |
Divisions (1)
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Number |
Date |
Country |
Parent |
116945 |
Sep 1993 |
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