Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1993-03-31
1994-10-11
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528128, 528170, 528172, 528173, 528174, 528176, 528183, 528185, 528220, 528229, 528350, 528351, 528353, C08G 7310, C08G 6926
Patent
active
053548396
ABSTRACT:
A polyimide comprising a requisite structural unit having one or more recurring structural units of the formula: ##STR1## such as the structural units of the formula ##STR2## The polyimide can have an extremely low dielectric constant and is colorless, transparent and excellent in processability and heat resistance, and also provides an aromatic diamine which is useful as a raw material monomer of the polyimide or a raw material of other various engineering plastics.
REFERENCES:
patent: 4065345 (1977-12-01), Progar et al.
Chemical Abstracts, vol. 116, No. 6, Feb. 10, 1992, JPA-306529.
Chemical Abstracts, vol. 112, No. 20, May 14, 1990, JPA-1261422.
Asanuma Tadashi
Ishida Tsutomu
Kataoka Toshiyuki
Matsuo Mitsunori
Oikawa Hideaki
Hampton-Hightower P.
Kight III John
Mitsui Toatsu Chemicals Incorporated
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