Crosslinked phenolic polyesters

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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528129, 528153, 528155, 525480, 525508, 524 81, 524424, 524425, 524426, 524442, 524451, 524706, 524742, 524773, 428482, C08F28300, C08G 804

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active

059198737

ABSTRACT:
Disclosed are novel crosslinked polymers derived from methylol phenols and maleic acid species, and methods of synthesizing these macromolecules. Polyesters and chromandicarboxylic groups are the dominant linkages in the structure of general formula: ##STR1## R is H or a spacing group between aromatics, R.sub.1 is an aldehyde substituent, R.sub.2 a spacing group belonging to multihidric alcohols, a maleyl grouping, and n a whole number either 0 or 1.

REFERENCES:
patent: 4347355 (1982-08-01), Chu
patent: 4500689 (1985-02-01), Thomas
patent: 4757118 (1988-07-01), Das et al.
patent: 5621071 (1997-04-01), Newsham et al.
patent: 5652047 (1997-07-01), Hesse et al.
patent: 5716661 (1998-02-01), Scholz et al.

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