Process for preparing blends of polyamide and ionic copolymers
US5688868A · kind A · utility
17Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Aug 26, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/919
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved process for preparing thermoplastic polymer blends which contain at least 50% by weight of polyamide as a principal component with the remainder consisting essentially of an ionic polymer component which is derived from an olefin/acid copolymer in which the polyamide and the ionic polymer are combined into a uniform mixture via melt blending at high shear, and the improvement comprises simultaneously contacting the mixture while in the melt with one or more neutralizing basic metal compounds in an amount sufficient to neutralize from 100% up to 200% of the acid groups present in the ionic polymer component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.