Difunctional cyclobutabenzene monomers

Details Difunctional cyclobutabenzene monomers Difunctional cyclobutabenzene monomers

1994-08-01

1995-05-23

Krass, Frederick

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 74, 528125, 528128, 528190, 528206, 528212, 528219, 528271, 528298, 528332, 528339, 528344, C08G 6300

Patent

active

054183120

ABSTRACT:
Novel difucntionalized cyclobutabenzene monomers of the general formula: ##STR1## wherein Z can be hydrogens or a cyclobutane ring; and X and Y are carboxyl, amino, alcohol, isocyanate, acid halide, or bis-acyl fluoride groups. In a particularly preferred embodiment, the cyclobutabenzene derivative is 1,2-dihydrocyclobutabenzene-3,6-carboxylic acid. The difunctionalized cyclobutabenzene monomer can form part of a polymer backbone chain, but has an additional functionality, the butane ring, which can be easily opened to produce strong, covalent bond crosslinking between polymer chains. The crosslinking can be induced simply by heating the polymer to a temperature in excess of 300.degree. C.

REFERENCES:
patent: 4570011 (1986-02-01), So
patent: 4708994 (1987-11-01), Wong
patent: 4795827 (1989-01-01), Bruza et al.
patent: 5171824 (1992-12-01), Marks et al.
patent: 5349111 (1994-09-01), Scheck

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