Monomers, oligomers, and polymers of biscyclobutarenes bridged b

Details Monomers, oligomers, and polymers of biscyclobutarenes bridged b Monomers, oligomers, and polymers of biscyclobutarenes bridged b

1988-06-09

1989-09-05

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528183, 548217, 548577, C08F 3800, C08F13208

Patent

active

048640107

ABSTRACT:
A biscyclobutarene monomer is prepared comprising two cyclobutarene moieties bridged by a divalent radical having at least one benzoxazole linkage. A reactive biscyclobutarene oligomer is also prepared by reacting a cyclobutarene-carboxylic acid, a diaminodihydroxyarene, and either an aromatic diacid or an aromatic diacid chloride. The monomers and reactive oligomers can be polymerized to form polymers exhibiting outstanding thermooxidative stability at high temperatures for prolonged time periods.

REFERENCES:
patent: 4533693 (1985-08-01), Wolfe et al.
patent: 4540763 (1985-09-01), Kirchhoff
patent: 4578432 (1986-03-01), Tsai et al.
patent: 4675370 (1987-06-01), Tan et al.
patent: 4687823 (1987-08-01), Kirchhoff et al.
patent: 4692445 (1987-09-01), Kuhla et al.
Denny et al., Polymer Preprints, vol. 29, No. 1, pp. 194-195 (Jun. 1988), entitled, "High Temperature Bisbenzocyclobutene (BCB) Terminated Resin Properties".
U.S. Ser. No. 883,240 to Kirchhoff dated Jul. 1986.
U.S. Ser. No. 132,734 to Schrock dated Dec. 1986.

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