Medium density chlorinated polyvinyl chloride foam and process for preparing
US5789453A · kind A · utility
10Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Apr 10, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2421/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a medium density chlorinated polyvinyl chloride foam and the method of preparing such a foam using a blend of chemical blowing agents. The foam having a specific gravity in the range of about 0.3 to about 1.5 comprises chlorinated polyvinyl chloride, a blend of decomposition type blowing agents, a tin stabilizer, a optional impact modifier and a optional high molecular weight process aid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.