US 4,980,453 AGranted

Macrocyclic oligomers containing spiro(bis)indane moietes

AssigneeGeneral Electric Company

InventorsDaniel J. Brunelle, Thomas L. Guggenheim, James A. Cella, Thomas L. Evans, Luca P. Fontana, Gary R. Faler, James M. Fukuyama, Eugene P. Boden, Jonathan D. Rich, Thomas G. Shannon, Sharon J. McCormick, Philip J. McDermott, Alice M. Colley, Joseph W. Guiles

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

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.

Claims8

Dependent claims

A composition comprising random macrocyclic monomer and oligomer compounds corresponding to the formula ##STR20## wherein the Z.sup.1 radicals are identical linking groups;

A.sup.1 is a spiro (bis)indane moiety of the formula ##STR21## about 60% of the R.sup.1 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic, alicyclic or aromatic organic radicals;
each R.sup.2 is independently C.sub.1-4 primary or secondary alkyl or halo;
a is from 1 to about 12, b is from 0 to 90% of total --A.sup.1 --Z.sup.1 --and --R.sup.1 --Z.sup.1 --moieties and n is 0-3.

Dependencies are inferred from the claim text.

Facts

Application: 07/146,154Filed 20 Jan 1988 · continuation in part
Priority: 21 Jul 1986
Granted: 25 Dec 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

C08G 75/23
Polysulfones: polyethersulfones
C08G 64/06
Aromatic polycarbonates: not containing aliphatic unsaturation
C08G 65/4081
From phenols and other compounds , e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group: forming cyclic polymers or oligomers
C08G
Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds

Family

Serial887,503Parent of this continuation-in-part · filed 21 Jul 1986
Serial920,540Parent of this continuation-in-part · filed 20 Oct 1986
Serial20,264Parent of this continuation-in-part · filed 27 Feb 1987
Serial64,650Parent of this continuation-in-part · filed 22 Jun 1987
Serial26,517Parent of this continuation-in-part · filed 17 Mar 1989
US 4,736,016 AParent of this continuation-in-part
US 4,757,132 AParent of this continuation-in-part
US 4,808,754 AParent of this continuation-in-part
US 4,789,725 AParent of this continuation-in-part
US 4,837,298 AParent of this continuation-in-part
US 4,980,453 AThis patent

From the US filing history. Foreign family members aren’t listed.