Amoco Corporation

Union Carbide Corporation

Donald R Kelsey

Robert A Clendinning

Markus Matzner

Paul A Winslow

Lloyd Mahlon Robeson

Louis M Maresca

James E Harris

George T Kwiatkowski

Russell L Kreeger

Herbert S Chao

Robert Barclay, Jr

Bernard Cooker

Described herein are novel monomers, polyketals derived from such monomer, improved process for the production of such monomers and a process for producing the polyketals.

Monomers and polyketal polymers from such monomers

Monomers and polyketal polymers

Described herein are crystalline block polymers and chain extended polymers containing blocks of crystalline poly(aryl ether ketones). Also, described herein are monomers and oligomers suitable for preparing the crystalline block polymers and chain-extended polymers. Further, described herein are methods for producing the crystalline block and chain-extended polymers, as well as the monomers and oligomers.

Block polymers containing a poly(aryl ether ketone) and methods for

Described herein is process for preparing polyaryletherketones from a polyketal by converting the polyketal to a polyaryletherketone in the presence of a Group IIA, IIB, IVA, VIIB, IIIA, IVB, IB or VIII metal salt.

Method for converting polyketals to polyaryletherketones in the presence

Described herein is a method for preventing molecular weight degradation in the preparation of poly(aryl ether sulfones) by nucleophilic displacement polycondensation reactions. This method comprises the addition of an effective amount of a sodium, lithium, alkaline earth or lanthanide metal salt to the polycondensation reaction to control the molecular weight of the poly(aryl ether sulfone).

Co-reagent stabilization of poly(aryl ether sulfones) using sodium,

Described herein are novel substantially linear monomeric compositions which can be polymerized with one or more difunctional monomers to give novel polymeric compositions having liquid crystal properties. This invention is also directed to a process for preparation of the novel substantially linear monomeric compositions.

Substantially linear monomeric composition and liquid crystal polymeric

Described herein are poly(aryl ether ketones) derived from biphenol which can be improved by incorporating bisphenol comonomers. The resulting polymers have lower melting points while the Tg is essentially unchanged resulting in good mechanical and crystallization properties.

Modified poly(aryl ether ketones) derived from biphenol

The method of preparing a thermoplastic polyarylether polymer which comprises reacting a first monomer composition comprising an activated dihalobenzenoid compound and a dihydroxydiphenyl aliphatic monomer in a molar ratio of dihalobenzenoid compound to dihydroxybenzenoid compound of at least 1.2 to 1, adding to the product a second monomer composition comprising a dihydroxybenzenoid compound comprising at least one compound which is free of aliphatic moieties and polymerizing.

Production of aromatic amorphous thermoplastic poly aryl ether from

The method of preparing a thermoplastic polyarylether polymer which comprises reacting a first monomer composition comprising an activated dihalobenzenoid compound and dihydroxybenzenoid composition comprising hydroquinone, adding to the product a second monomer composition comprising a dihydroxybenzenoid composition consisting essentially of Bis-(hydroxyphenyl) compounds in a concentration of at least 50 mole percent of the total Bis-(hydroxyphenyl) compounds added in the monomer compositions and polymerizing.

Production of polyarylene ether from activated dihalo benzenoid monomer,

2,2-bis-phenol dioxolanes monomers

Described herein is an improved process for preparing poly(aryl ether ketones) by a nucleophilic displacement polycondensation reaction wherein the improvement comprises adding an alkali, alkaline earth, or lanthanide metal salt to the polycondensation reaction.

Preparation of poly(aryl ether ketones) in the presence of an alkali,

Described herein is an improved process for preparing poly(aryl ethers) and poly(aryl ether ketones) by the reaction of a mixture of at least one bisphenol and at least one dihalobenzenoid compound, and/or a halophenol, in which the improvement comprises providing to the reaction medium, a combination of sodium or an alkaline earth metal carbonate and/or bicarbonate and a potassium, rubidium, or cesium salt of an organic acid or combinations of various organic salts thereof. The process yields high molecular weight, linear, poly(aryl ethers) and poly(aryl ether ketones) possessing excellent thermal stability and physical properties.

Preparing poly(aryl ethers) using alkaline earth metal carbonates,

Described herein is an improved process for preparing poly(aryl ether ketone)s by reacting a mixture of at least one bisphenol and at least one dihalobenzenoid compound or halophenol, wherein the improvement comprises providing to the reaction, a combination of sodium carbonate and/or bicarbonate and an alkali metal halide selected from potassium, rubidium or cesium fluoride or chloride, or combinations thereof.

Growing community of inventors

Hillsborough, NJ, United States of America

Donald R Kelsey