Cyclic polyhydroxy polyether oligomers having spirodilactam unit

Details Cyclic polyhydroxy polyether oligomers having spirodilactam unit Cyclic polyhydroxy polyether oligomers having spirodilactam unit

1991-08-19

1992-07-07

Bleutge, John C.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

540466, 540468, C08G 5226, C08G 6914

Patent

active

051284367

ABSTRACT:
Novel cyclic oligomers contain moieties of 2-hydroxyl-1,3-propylene alternating with moieties of 1,6-di(oxyphenyl) 1,6-diaza [4.4] spirodilactam and, optionally, di(oxyphenyl) compound. The oligomers are thermoplastic resin of the phenoxy resin type.

REFERENCES:
patent: 4672102 (1987-06-01), Silvis et al.
patent: 4888408 (1989-12-01), Wang
patent: 4889907 (1989-12-01), Wang
patent: 4933423 (1990-06-01), Wang
patent: 4939227 (1990-07-01), Wang
patent: 5001213 (1991-03-01), Wang

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