Thermoplastic polymer compositions containing high molecular weight poly(vinyl aromatic) melt-rheology modifiers
US5302429A · kind A · utility
11Cited by
24References
11Claims
0Family size
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Key dates
| Filing date | Nov 21, 1991 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Nov 21, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Vinyl aromatic polymers having a minimum molecular weight of about 500,000, and preferably of about 1,500,000, are blended at levels of from about 1 to about 25% with thermoplastic resins to improve the melt rheology of the thermoplastic resins and facilitate blow molding, thermoforming, extrusion and similar processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.