Dialkyl dicarbonates as blowing agents for polymers
US5086083A · kind A · utility
5Cited by
8References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1991 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Jul 2, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J9/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of using blowing agent compositions to produce foamed plastics such as polyurethanes, polyesters and the like, wherein a major auxiliary source of blowing agent for the foam is the decomposition of dialkyl dicarbonates. The dialkyl dicarbonates can be decomposed over temperatures ranging from about 10.degree. C. to about 45.degree. C. when used in combination with particular tertiary amine decomposition catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.