Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1988-09-16
1989-12-26
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528 89, 528 97, 528117, 528323, C08G 5929, C08G 6914
Patent
active
048899070
ABSTRACT:
Novel polymeric polyhydroxy polyethers containing moieties of 2,2-di(oxyphenyl)propane and a 1,6-diazaspiro[4.4] spirodilactam having oxyaryl substituents on each spiro ring nitrogen atom, which moieties are connected by 2-hydroxy-1,3-propylidene connecting groups, are characterized by relatively high glass transition temperatures.
REFERENCES:
patent: 4672102 (1987-06-01), Silvis et al.
Anderson Harold D.
Shell Oil Company
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