Hoechst Celanese Corporation

General Electric Company

Celanese Gmbh

Thomas J Dolce

Paul N Chen, Sr

Garo Khanarian

Vincent J Sullivan

Paul J Harget

Mike Jaffe

Bheema R Vijayendran

This invention discloses blends of cyclic olefin polymers and styrene-containing elastomers useful as molding compositions to mold articles therefrom. The articles so molded exhibit improved mechanical properties without any significant effect on optical properties, making them ideally suitable for applications such as optical discs, lenses and the like.

Cyclic olefin polymer blends exhibiting improved impact resistance and

A process for making a compatible LCP blend by reactively esterifying an LCP having a carboxylic acid or ester end group with either PPO or PPS, or derivatives thereof, using a catalytic mixture containing boric acid and polyphosphoric acid or sulfuric acid. The carboxylic functionality on the LCP reacts with the hydroxyl end group on the PPO or the thiol end group on the PPS to form an ester or thioester linkage. The two polymers to be blended are melt mixed with the catalyst mixture and extruded.

Compatible LCP blends via direct esterification

A composite comprising a polyarylate or an aromatic polybenzimidazole article and a coating on at least one surface of the article comprised of a blend of from about 5 to about 95 weight percent of a polyarylate and from about 95 to about 5 weight percent of an aromatic polybenzimidazole. A process for preparing the composites comprises dissolving in a mutual solvent from about 5 to about 95 weight percent of the aromatic polybenzimidazole to about 95 to about 5 weight percent of the polyarylate, based on the total weight of those polymers, heating a polyarylate or aromatic polybenzimidazole article to a surface temperature over 100.degree. C., e.g., from about 120.degree. C., to about 180.degree. C., and then coating the polyarylate or aromatic polybenzimidazole article with the solution and subsequently evaporating the solvent, thereby producing a dried coating of a blend of a polyarylate and an aromatic polybenzimidazole on at least one surface of the article. The composites, particularly in the form of films, fibers or fibrets, may be post-treated with heat or sulfuric acid in order to minimize their shrinkage when subsequently subjected to heat and in order to increase their resistance to solvents and acid.

Composites of aromatic polybenzimidazoles and polyarylates

Disclosed are nucleating agents for polyethylene terephthalate molding compositions comprised of alkali metal salts of carboxylic acid-containing polymeric microgel particles which are prepared by polymerizing in aqueous emulsion a monomer mixture containing about 5 to 50 percent by weight of polymerizable carboxylic acid monomers, up to 10 percent of a multifunctional crosslinking monomer and one or more carboxylfree relatively water insoluble polymerizable vinyl monomers.

Alkali metal salts of cross-linked polymeric microgels as nucleating

Novel thermoplastic compositions are disclosed which include a linear polyester resin, a flame-retardant additive and polytetrafluoroethylene resin. These flame retardant, non-dripping compositions are particularly useful for molding applications.

Flame retardant, non-dripping linear polyester compositions

Novel foamed thermoplastic compositions are disclosed that comprise a polyester resin, such as poly(1,4-butylene terephthalate); an ionically crosslinked copolymer of an .alpha.-olefin and an .alpha.,.beta.-ethylenically unsaturated mono- or dicarboxylic acid, and a polytetrafluoroethylene resin.

Growing community of inventors

Stirling, NJ, United States of America

Thomas J Dolce