Power transmission belts prepared from polyimide and polyketone

Details Power transmission belts prepared from polyimide and polyketone Power transmission belts prepared from polyimide and polyketone

1990-07-20

1991-04-09

Foelak, Morton

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

2643281, 2643286, 2643288, 528184, 528288, C08G 7900

Patent

active

050066277

ABSTRACT:
A polyimide having a repeating unit of the formula (I), (II), or (III): ##STR1## where LG is a linking group and W is an oligomeric chain selected from the group consisting of polyether, a polythioether, a polyetherthioether, polycarbonyl, or polysulfonyl, or a copolymer thereof.

REFERENCES:
patent: 4760124 (1988-07-01), Matsummura et al.

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