Blends of semi-crystalline polyamides and polyesteramides

Details Blends of semi-crystalline polyamides and polyesteramides Blends of semi-crystalline polyamides and polyesteramides

1992-01-02

1994-06-14

Seidleck, James J.

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

Synthetic resins

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

525425, C08L 7710, C08L 7712

Patent

active

053210999

ABSTRACT:
Blends of (1) a crystalline polyamide derived from 4,4'-diphenylmethane diisocyanate (MDI) and a dicarboxylic acid and (2) a segmented polyesteramide derived from (a) MDI, (b) a carboxylic acid-terminated polyester prepolymer, a carboxylic acid-terminated polyether prepolymer or a carboxylic acid-terminated polycarbonate prepolymer and (c) from 0 to 10 moles of a dicarboxylic acid per mole of prepolymer, exhibit increased tensile ductility and are useful in the manufacture of headlamp reflectors, electrical connectors, molded circuit boards and the like.

REFERENCES:
patent: 4258154 (1981-03-01), Kyo
patent: 4473688 (1984-09-01), Zappa
patent: 4536533 (1985-08-01), Chen
patent: 4547547 (1985-10-01), Chen
patent: 4562228 (1985-12-01), Chen
patent: 4579914 (1986-04-01), Nelb et al.
patent: 4612353 (1986-09-01), Andrews et al.
patent: 4874800 (1989-10-01), Minamisawa et al.
patent: 4977213 (1990-12-01), Giroud-Abel et al.

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