Polyimide having excellent thermal dimensional stability

Details Polyimide having excellent thermal dimensional stability Polyimide having excellent thermal dimensional stability

1989-06-07

1992-01-14

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528126, 528128, 528172, 528179, 528182, 528188, 528351, C08G 6926

Patent

active

050812297

ABSTRACT:
The present invention provides a copolyimide characterized in that the copolyimide contains units represented by formulas (I) and (II) ##STR1## (wherein R.sub.0 represents an aromatic tetracarboxylic residue). The polyimide has excellent thermal dimensional stability, and can be fabricated by using conventional inexpensive materials.

REFERENCES:
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patent: 4378400 (1983-03-01), Makino et al.
patent: 4405770 (1983-09-01), Schoenberg et al.
patent: 4725484 (1988-02-01), Kumagawa et al.
patent: 4874835 (1989-10-01), Bordahl
patent: 4886874 (1989-12-01), Nagano et al.
Journal of Applied Polymer Science, vol. 31, 979-995 (1986).

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