Polyolefin composition containing diorganopolysiloxane process aid
US5789473A · kind A · utility
23Cited by
9References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1995 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Jan 24, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is disclosed a polyolefin composition which can be extruded at relatively high rates to provide extrudate having a low surface roughness (sharkskin), said composition comprising (A) 100 parts by weight of a polyolefin resin; and (B) 0.01 to 1 part by weight of a hydroxy-functional diorganopolysiloxane process aid, said diorganopolysiloxane having a number average molecular weight of at least 10,000. In particularly preferred embodiments, a hydroxy-functional diorganopolysiloxane in combination with a low density polyethylene is used as a process aid for linear low density polyethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.