Method for curing polyurethane coating
US4631206A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1985 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Jul 25, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31587
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An uncured polyurethane coating formed by applying polyurethane paint containing isocyanate prepolymer on a substrate is cured by a method which comprises applying a catalyst (cure accelerator) on the uncured polyurethane coating and subsequently exposing the polyurethane coating to a heating atmosphere of 60.degree. to 100.degree. C. By this method, the reaction of urethanation explosively proceeds and the time for curing the coating can be notably cut because the optimum catalyst for the polyurethane coating can be selected without restriction and the catalyst in a highly concentrated state can be brought into contact with the polyurethane coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.