Aromatic polyether sulphones based on dihydroxy-diphenyl-cyclo-a

Details Aromatic polyether sulphones based on dihydroxy-diphenyl-cyclo-a Aromatic polyether sulphones based on dihydroxy-diphenyl-cyclo-a

1989-09-27

1992-02-04

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528174, C08G 7500

Patent

active

050861573

ABSTRACT:
Polyether sulphones based on diphenols corresponding to the following general formula (I): ##STR1## wherein R.sup.1 and R.sup.2, independently represent hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 or C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl, or C.sub.7 -C.sub.12 aralkyl; m represents an integer of from 4 to 7;

REFERENCES:
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patent: 4175175 (1979-11-01), Johnson et al.
patent: 4533721 (1985-08-01), Kurosawa et al.
patent: 4598137 (1986-07-01), Guiver et al.
patent: 4661581 (1987-04-01), Nozawa et al.
patent: 4776999 (1988-10-01), Kohn

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