Phenolphthalein-dihydroxy aromatic compound polycarbonates

Details Phenolphthalein-dihydroxy aromatic compound polycarbonates Phenolphthalein-dihydroxy aromatic compound polycarbonates

1977-04-18

1980-07-01

Pertilla, Theodore E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528171, 528199, 528202, 528219, C08G 6362

Patent

active

042107415

ABSTRACT:
Phenolphthalein-dihydroxy aromatic compound polycarbonates are disclosed wherein the mole ratio of phenolphthalein to dihydroxy aromatic compound is in the range from about 0.05 to about 0.7 and the weight average molecular weight range is from about 25,000 to about 50,000 as determined by gel permeation chromatography.
These copolymers exhibit improved impact strength, heat resistance, creep resistance, tensile strength at high temperates and stress crack resistance.

REFERENCES:
patent: 3036036 (1962-05-01), Howe
Poly. Sci. USSR A10, O. V. Smirnova et al., 1968, pp. 118-124.

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