Chip resistant coatings and methods of application
US5066733A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1990 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Jul 23, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/671
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a liquid coating composition, useful for making a chip resistant coating, comprising a binder of: a first and a second urethane resin each containing terminal, reactive ethylenically unsaturated groups. Each urethane resin is prepared by reacting components comprising (A) an isocyanate-terminated prepolymer which is the product of reacting an organic polyisocyanate with an organic polyol with (B) an isocyanate reactive group-containing unsaturated monomer selected from hydroxyalkyl acrylates, hydroxyalkyl methacrylates and hydroxyalkyl acrylamides. The organic polyol for the first urethane resin has a hydroxyl functionality of 3 or more; the organic polyol for the second urethane resin has a hydroxyl functionality of less than three; and the average functionality of the polyols utilized for the first and second urethane resins is less than three. Also disclosed is a method of making a cured chip resistant, coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.