Catalyst for low temperature cure of blocked isocyanates
US5902871A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1998 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Feb 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention comprises a curable composition comprising: PA1 (i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate; PA1 (ii) a functional compound containing reactive hydrogen; PA1 (iii) a triorganotin catalyst for promoting the reaction of the blocked reactive component with the functional compound. The composition may also be admixed with water. The invention also relates to a method for curing a blocked isocyanate or blocked isothiocyanate at a temperature below about 150.degree. C. which comprises combining a triorganotin compound with the blocked reactive component and functional compound and heating at a temperature less than about 150.degree. C. to obtain a cured urethane or thiourethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.