Polycarbonate polymer having spirodilactam moieties

Details Polycarbonate polymer having spirodilactam moieties Polycarbonate polymer having spirodilactam moieties

1989-09-25

1991-07-09

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528196, 528201, 528204, 528323, C08G 6412

Patent

active

050307070

ABSTRACT:
Novel polycarbonate polymers comprise regular, alternating units of (a) a 1,6-diaza [4.4] spirodilactam having oxyaryl substituents on each spiro ring nitrogen atom and (b) a di(oxyphenyl) compound, the units being separated by carbonyl groups. The regular, alternating polycarbonate polymers exhibit improved hydrolytic stability.

REFERENCES:
patent: 4594404 (1986-06-01), Kawakami et al.
patent: 4906725 (1990-03-01), Wang
"Webster's Ninth New Collegiate Dictionary," pp. 830-831, Merriam-Webster Inc., Springfield, Mass. (1983).
Schnell, Industrial and Engineering Chemistry, 51(2), pp. 157-160 (1960).

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