Composites made from thermosetting compositions containing hemif

Details Composites made from thermosetting compositions containing hemif Composites made from thermosetting compositions containing hemif

1982-01-19

1984-02-07

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524495, 525429, C08K 714

Patent

active

044304730

ABSTRACT:
There are described composites containing from about 20 to about 70 weight percent of a reinforcing material, such as glass, carbon, graphite, or aromatic polyamide fiber, and from about 30 to about 80 weight percent of a thermosetting composition which contains hemiformals of phenol and methylolated phenol and a polymer miscible with the hemiformal.

REFERENCES:
patent: 2609352 (1952-09-01), Kvalnes
patent: 2894931 (1959-07-01), Sommerville
patent: 3959433 (1976-05-01), Sauers
Walker, Formaldehyde, 3rd Edition, Reinhold Publishing Corp., New York, (1964), pp. 305-306.
Bakeland and Bender "Industrial and Engineering Chemistry," vol. 17, No. 3, pp. 225-237, (1925).
Strupinskaya et al., Plast. Massy 1968, (12), pp. 18-20.

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