Crystalline polyester-imide, process for production thereof, and

Details Crystalline polyester-imide, process for production thereof, and Crystalline polyester-imide, process for production thereof, and

1986-07-22

1988-07-26

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528183, 528184, 528188, C08G 7316

Patent

active

047601248

ABSTRACT:
Melt-moldable crystalline polyester-imides comprising units of the following formula (IA) ##STR1## wherein R represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a halogen atom, and n is an integer of 2 to 12, as main recurring units. The polyester-imides are prepared by (1) condensing a starting mixture containing 1 mole of an imidodicarboxylic acid and 2 to 12 moles of an aromatic monohydroxy compound under heat while distilling water out of the reaction system or (1)' condensing a starting mixture comprising 1 mole of trimellitic anhydride, 0.5 to 0.8 mole of an aliphatic diamine and 2 to 20 moles of an aromatic monohydroxy compound under heat, and thereafter (2) polycondensing the resulting reaction mixture under heat with an amount, sufficient to distill substantially all of the aromatic monohydroxy compound from the reaction system, of a diol compound or a mixture of the diol compound and an aliphatic diamine until substantially all of the aromatic monohydroxy compound is distilled out of the reaction system.

REFERENCES:
patent: 3567685 (1971-03-01), Bialous et al.
patent: 4206261 (1980-06-01), Laganis et al.

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