Method of enhancing open cell formation in alkenyl aromatic polymer foams
US5962545A · kind A · utility
25Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Jun 23, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method of enhancing open cell formation in making extruded alkenyl aromatic polymer foams of about 30 percent or more open cell content. Open cell formation is enhanced by incorporating into the foam an ethylene copolymer having a Vicat softening point of about 85.degree. C. or less. The ethylene copolymer is incorporated at from about 0.1 to about 7 percent based upon the weight of the alkenyl aromatic polymer material comprising the foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.