Polyimide and process for producing the same

Details Polyimide and process for producing the same Polyimide and process for producing the same

1994-06-30

1996-02-06

Acquah, Samuel A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528176, 528179, 528183, 528185, 528188, 528352, 528353, 528503, 524 81, C08G 6928

Patent

active

054896690

ABSTRACT:
A polyimide represented by the general formula (1): ##STR1## wherein Y represents a hydrocarbon group having 4 to 20 carbon atoms or a sulfur atom; each of R.sub.1 to R.sub.4, R.sub.i and R.sub.j represents a halogen atom, a hydrocarbon group having 1 to 6 carbon atoms or a halogen-containing hydrocarbon group having 1 to 6 carbon atoms; each of a, b, c, d, e and f represents an integer of 0 to 4 satisfying a+b.ltoreq.4, c+d.ltoreq.4 and e+f.ltoreq.4; and X represents a tetravalent organic group having 2 or more carbon atoms.

REFERENCES:
patent: 4965339 (1990-10-01), Maruyama et al.

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