High impact resistant blends of thermoplastic polyesters and modified block copolymers
US4868243A · kind A · utility
16Cited by
3References
43Claims
0Family size
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Key dates
| Filing date | Feb 5, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Feb 5, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A suber-toughened multiphase thermoplastic composition is provided by incorporating an effective amount of at least one functionalized, selectively hydrogenated alkenyl arene/conjugated diene block copolymer to which has been grafted an effective amount of carboxyl functional groups primarily in the alkenyl arene blocks thereof with poly (ethylene terephthalate). The carboxyl functional groups are present as carboxylic acids and their salts in an effective salt to acid ratio for super-toughening the composition. Additionally, the block copolymer phase has an effective phase size for super-toughening the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.