Polymer blends containing polymer of .beta.-hydroxybutyric acid

Details Polymer blends containing polymer of .beta.-hydroxybutyric acid Polymer blends containing polymer of .beta.-hydroxybutyric acid

1981-11-10

1983-07-12

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525186, 525190, 525412, 525415, 525450, C08L 6704, C08L 2706, C08L 3318

Patent

active

043931677

ABSTRACT:
Polymer blends containing (i) 0.2-95% by weight of a high molecular weight .beta.-hydroxybutyric acid homo- or copolymer and (ii) a polymer containing at least 25% by weight of chlorine or nitrile groups, such as chlorinated polyethylene, polyvinyl chloride, or a high acrylonitrile resin.
In small quantities the .beta.-hydroxybutyric acid polymer acts as a processing aid for the chlorine or nitrile containing polymer.
In larger quantities the properties of the .beta.-hydroxybutyric acid polymer or the chlorine or nitrile containing polymer are improved.

REFERENCES:
patent: 3182036 (1965-05-01), Baptist et al.
patent: 3379794 (1968-04-01), King et al.
patent: 3557252 (1971-01-01), Hsieh et al.
patent: 3592877 (1971-07-01), Mullins
patent: 3904579 (1975-09-01), Braddicks
J. App. Polymer Science, vol. 22, (1978) pp. 1255-1265, Sundgren et al.
Macromoles, vol. 13, (1980), pp. 365-369, Aubin et al.
Chem. Abstracts 95:82211t, Hummel et al.

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