General Electric Company

Joseph W Guiles

Thomas Link Guggenheim

Sharon J McCormick

Daniel Joseph Brunelle

Eugene Pauling Boden

Thomas G Shannon

Alice M Colley

James Anthony Cella

Thomas L Evans

Jonathan D Rich

Luca P Fontana

Gary R Faler

Philip J McDermott

John W Verbicky

James M Fukuyama

Macrocyclic oligomers, including polycarbonates, polyesters, polyamides, polyimides, polyetherketones and polyethersulfones, are conveniently prepared from various spiro(bis)indane compounds, especially the 6,6'-difunctional 3,3',3'-tetramethylspiro(bis)indanes. The macrocyclic oligomers may be conveniently converted to linear polymers.

Macrocyclic oligomers containing spiro(bis)indane moietes

Cyclic polyphenylene ether-polycarbonate oligomer compositions are prepared from bishaloformates and bisphenols, at least one of which includes a spirobiindane moiety and the other of which is derived from a bisphenol-terminated polyphenylene ether oligomer. The cyclic compositions may be converted to linear copolycarbonates by treatment with a polycarbonate formation catalyst.

Cyclic polyphenylene ether-polycarbonate oligomers

Copolyamides are prepared by the reaction of monocyclic spiro(bis)indane polyamide oligomers with lactams in the presence of basic reagents.

Spiro(bis) indane copolyamide and preparation thereof

Cyclic polyamide oligomers are prepared by the reaction of various spirobiindane diamines, including spirobiindane bisphenol bis-aminophenoxy ethers, with dicarboxylic acid chloride such as isophthaloyl chloride. The oligomer compositions may be converted to copolyamides by reaction with lactams in the presence of basic reagents.

Spirobiindane bis-aminophenoxy ethers

Phenylene ether-carbonate copolymer containing spiroindane group

Polyetherimide bisphenols and bischloroformates are prepared by the reaction of dianhydrides or certain bisimides with aminophenols or mixtures thereof with diamines. They are useful as intermediates for the preparation of cyclic heterocarbonates, which may in turn be converted to linear copolycarbonates. The bisphenols can also be converted to salts which react with cyclic polycarbonate oligomers to form block copolyetherimidecarbonates.

Polyetherimide bisphenol compositions

Cyclic heterocarbonates containing linkages such as ester, urethane, imide, ether sulfone, ether ketone or amide may be prepared from the corresponding bishaloformates. They may be converted to linear copolycarbonates.

Growing community of inventors

Ft. Collins, CO, United States of America

Joseph W Guiles