The Dow Chemical Company

Dow Global Technolgoies LLC

Paul J Moses

Wayne R Hutter

James E Kosinski

Mark F Sonnenschein

Augustin T Chen

Yi-Bin Huang

Paula B Moses

Curtis E Peterson

Roel H Vossen

Christopher P Christenson

David E Henton

Douglas E Beyer

Christopher Michael Edwards

Edward Louis D'Hooghe

Benjamin L Wendt

Benjamin S Ehrlich

Kevin L Nichols

Richard W Oertel

Deborah E Plaver

Mark Cox

Mark A Remmert

Mark G Hofius

Roger Clement

Wilfred Van Pelt

A low molecular weight engineering thermoplastic polyurethane (ETPU) can be homogeneously melt blended with a polyarylene ether (PAE) to give a low viscosity melt processable blend, and subsequently cooled to form a heterogeneous dispersion of the ETPU in the PAE that has two T s, one that is close to the T of the pure ETPU, and one that is close to the T of the pure PAE. As such, the composite blend retains the properties of the polyarylene ether.

Low molecular weight engineering thermoplastic polyurethane and blends thereof

The present invention is a thermoplastic polyurethane (TPU) or thermoplastic polyurethane/urea (TPUU) comprising structural units of: a) a diisocyanate; b) ethylene glycol, diethylene glycol, or 1,3-propanediol; c) a diol, a diamine, or an amino alcohol different from the one selected in (b) and having a molecular weight of less than 400 Daltons; and (d) ethylene oxide polyol or ethylene oxide-capped propylene oxide polyol. The TPU or TPUU has low temperature flexibility, high moisture vapor transition rates, and is considerably less expensive than state-of-the-art TPUs or TPUUs. The preferred composition is a TPU that is substantially free of phase segregation, and consequently has clarity and tensile strength not known for TPUs prepared using ethylene oxide polyol or ethylene oxide-capped propylene oxide polyol.

Thermoplastic polyurethane containing structural units of ethylene oxide polyol or ethylene oxide capped propylene oxide polyol

Physical properties of polymer resins, particularly amorphous resins such as ABS or SAN copolymers, are markedly improved by dispersing therein a filler-reinforced engineering thermoplastic polyurethane.

Filler-reinforced engineering thermoplastic polyurethane dispersion in a thermoplastic resin

Fibers having increased strength and small diameters can be produced from compositions comprising long chain branched syndiotactic vinyl aromatic polymers. Due to the increased fiber strength, less strand breakage occurs during processing which increases process productivity and yield.

Fibers made from long chain branched syndiotactic vinyl aromatic polymers

Fibers having increased strength and small diameters can be produced from compositions comprising long chain branched syndiotactic vinyl aromatic polymers derived from the polymerization of a vinyl aromatic monomer in the presence of from 10 to 1000 ppm, based on the amount of vinyl aromatic monomer, of a multifunctional monomer having more than one olefinic functionality. Due to the increased fiber strength, less strand breakage occurs during processing which increases process productivity and yield.

Polymer blend compositions are prepared having excellent combinations of optical properties, physical properties and hydrolytic stability comprising, in admixture, (a) a diaryl fluorene carbonate polymer and (b) a polysulfone. Preferably, the diaryl carbonate polymer is a copolycarbonate of bisphenol A with bis(hydroxyphenyl) fluorene, preferably 9,9-bis(4-hydroxyphenyl) fluorene. Optionally, the blend compositions also comprise a second non-fluorene carbonate polymer (c). Preferably, the polysulfone is a bisphenol A polysulfone or a polyether poly sulfone. In preferred aspects of this invention, the polysulfone and diaryl carbonate polymer components are selected to provide a transparent blend composition.

Blends of polysulfone with diaryl fluorene carbonate polymer

A dual durometer thermoplastic polyurethane or thermoplastic polyurethane-containing handle suitable for human grip provides both mechanical strength and chemical resistance and can be prepared without the use of adhesives.

Dual durometer handles

The toughness of a thermoplastic, rigid polyurethane is markedly improved by incorporating a mass ABS resin such as styrene/butadiene rubber grafted with a copolymer of styrene and acrylonitrile. This toughened polyurethane is particularly useful in making structural automotive body parts and housings for electrical appliances.

Thermally processable blends of high modulus polyurethanes and mass

The tensile strength of a thermoplastic, transparent, aromatic polyester is markedly improved by incorporating into the polyester a thermoplastic, rigid polyurethane. The resultant transparent blend is particularly useful in making eyeglasses, toothbrushes, and screw-driver handles.

Thermally processable blends of aromatic polyesters and high modulus

A thermal energy storage container is disclosed having a generally rectangular configuration. The container is made of a synthetic resinous material and is rotomolded to form a high-strength and seamless container capable of use over extended periods of time and over many freeze-thaw cycles of a thermal energy storage material contained within the container.

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Lake Jackson, TX, United States of America

Paul J Moses