Aromatic polyformal-polycarbonate block polymers and method for

Details Aromatic polyformal-polycarbonate block polymers and method for Aromatic polyformal-polycarbonate block polymers and method for

1978-09-18

1980-07-01

Pertilla, Theodore E.

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

Synthetic resins

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

525394, 525439, 525905, 528125, 528171, 528174, 528199, 528202, 528204, 528205, C08L 6900

Patent

active

042107318

ABSTRACT:
There are provided aromatic polyformal-polycarbonate block polymers and method for making such materials. The polyformal-polycarbonate block polymers can be made by phosgenating a mixture of a bisphenol and oligomeric aromatic polyformal having terminal phenolic groups. The aromatic block polymers are high performance thermoplastics having improved hydrolytic stability compared to aromatic polycarbonates and improved heat distortion temperature compared to conventional aromatic polyformal.

REFERENCES:
patent: 3069386 (1962-12-01), Barclay, Jr.
Transactions of the Society of Rheology 1977 21:2, pp. 273-290.

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