Amoco Corporation

Standard Oil Company (indiana)

John L Melquist

Douglas E Fjare

Weilong L Chiang

David J Fenoglio

Boh C Tsai

George E Rotter

Melvin L Luetkens, Jr

Neal R Nowicki

Edwin F Morello

John J Kelly

Glen R Hoff

M Jamal El-Hibri

Peter Fotis

Stephen Y Chen

Cheryl A Pauer

James E Harris

Larry C Satek

Nicholas K Kildahl

Laura Wilwerding

Steve T McKenna

Concentrates produced by melt processing a branching agent and a polyester carrier are disclosed. The concentrates are useful in melt processing polyesters. The concentrates contain sufficiently high concentrations of a branching agent to minimize the formation of crosslinked compounds in the concentrates. Process for using the concentrate also are disclosed.

Concentrate for use in the melt fabrication of polyester

Disclosed is a process for obtaining polyester articles, including foamed articles, containing low levels of extractable branching agent. The process comprises: (1) forming a molten mixture comprising (i) a major amount of a first resin composition comprising polyester and from 0 up to about 1 wt. % of a compound capable of branching the polyester, and (ii) a minor amount of a second polyester resin composition comprising at least about 50 wt. % polyester resin and greater than about 2 wt. % of a compound capable of branching the polyester, wherein the relative amounts of (i) and (ii) are such that said molten mixture comprises from about 0.1 wt. % to about 1 wt. % of said branching compound; (2) adding a blowing agent to the molten mixture; and (3) extruding the resultant mixture to obtain a foam. The invention is also directed to the second composition used in the above process, and foamed polyester articles obtained from the process.

Increased throughput in melt fabrication and foaming of polyester

Increased throughput in foaming and other melt fabrication of polyester

Blends comprising a polyether sulfone and an imide-containing copolymer of sulfonyl bis(phthalic anhydride), 1,4-bis(p-aminocumyl) benzene and at least one of a selected group of diamine comonomers. The blends display a unique combination of excellent mechanical and thermal properties as well as good solubility and easy melt-fabricability; in addition, the resin components are compatible, and many compositions are unexpectedly miscible.

Blends of polyether sulfones and copolymides

Blends of a polyether sulfone and the polyimide of the dianhydride sulfonyl bis(phthalic anhydride) ('SPAN') and the diamine 1,4-bis(p-aminocumyl)benzene ('BAP'). The blends will comprise from about 10 to about 90 wt % polyether sulfone, preferably greater than about 50 wt % polyether sulfone, based on the total weights of polyether sulfone and polyimide. The blends exhibit good toughness and improved thermal performance over polyether sulfone alone while remaining readily processable, and have good mechanical properties including unexpectedly high stiffness as determined by high tensile modulus values. Blends of this invention also are surprisingly miscible, defined as exhibiting a single Tg value.

Blends of polyether sulfones and polyimides

Novel polyetherimide copolymers comprising the reaction product of 2,2-bis(3',4'-dicarboxyphenyl)propane dianhydride, an aromatic bis(ether anhydride), and a diamine are described. The polyetherimide copolymers have improved thermal properties, are soluble in conventional solvents, and are compatible with other engineering resins.

Polyetherimide copolymers

Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butylbenzenes are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamino-t-butylbenzenes which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.

Polyamide, polyimide, and polyamide-imide polymers of

Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butylbenzenes are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamono-t-butylbenzenes which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.

Polyamide from diamino-t-butylbenzene

Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butyltoluene are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamino-t-butyltoluene which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.

Polyamide of diamino-t-butyltoluene

Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butylbenzens are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamino-t-butylbenzenes which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.

Conversion of alcohol to organic compounds which comprises contacting the alcohol with a heterogeneous catalyst composition comprising at least one member selected from the group consisting of

Alcohol conversion

The present invention is a novel crystalline lead aluminum borate composition characterized by a unique x-ray diffraction pattern.

Growing community of inventors

Naperville, IL, United States of America

John L Melquist