Preparation of polyolefin based thermoplastic elastomers
US6602959B2 · kind B2 · utility
8Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2001 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Oct 23, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a method for manufacturing a sealable and peelable polymer blend, in which method polystyrene and an ethylene copolymer are first melt blended and the obtained blend is further mixed with the same ethylene copolymer either by melt blending or dry blending so that the final polymer blend contains 1-50% by weight polystyrene and 99-50% by weight ethylene copolymer. Ethylene copolymer is preferably ethylene/methyl(meth)acrylate, ethylene/ethyl(meth)acrylate, ethylene/butyl(meth)acrylate or ethylene/vinylacetate copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.