Hydrolyzed dialkyl dicarbonates as blowing agents for polymers
US5140052A · kind A · utility
3Cited by
8References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1992 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Feb 3, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J9/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved method of using polymer compositions to produce foamed plastics, 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. Enhanced production of carbon dioxide is obtained by the addition of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.