Method for producing thermoplastic elastomer composition
US5298211A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1992 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Dec 3, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a method for producing a thermoplastic elastomer composition excellent in flexibility, mechanical properties and extrusion moldability which comprises directly feeding a particulate olefinic copolymer rubber (A) having a particle shape index .alpha. defined below of 0.1-0.9 and an olefinic plastic (B) to a continuous kneading extruder to carry out melt kneading and then, feeding an organic peroxide to downstream side of said extruder to carry out dynamic crosslinking: EQU .alpha.=D.sub.A /D.sub.B wherein D.sub.A denotes bulk density of the particulate olefinic copolymer rubber (A) and D.sub.B denotes bulk density of the olefinic plastic (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.