Compositions based on a high-impact polyamide

Details Compositions based on a high-impact polyamide Compositions based on a high-impact polyamide

1997-07-23

1999-07-06

Woodward, Ana

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525179, C08L 7700

Patent

active

059198656

ABSTRACT:
The invention relates to compositions including at least one polyamide (A) and at least one copolymer (B) of ethylene and of at least one unsaturated carboxylic anhydride or acid, such that the impact/fluidity (IF) value of the compositions including 90 parts of (A) per 10 parts of (B) is higher than 1.5 in the case of the compositions containing essentially no glass fibres and such that the IF value of the compositions including 60 parts of (A) per 10 parts of (B) and of glass fibres is higher than 0.9; the IF value is defined as the ratio of the product (i) of the Izod notched impact at 23.degree. C. multiplied by the MFI (Melt Flow Index) of the composition including (A) and (B) to the product (ii) of the impact multiplied by the MFI of the same composition but not including (B).

REFERENCES:
patent: 4174358 (1979-11-01), Epstein
patent: 4554320 (1985-11-01), Reimann et al.
patent: 5070145 (1991-12-01), Guerdoux
French Search Report dated Apr. 7, 1997.

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