Shell Oil Comapny

Kraton Polymers U.S. LLC

Richard Gelles

Michael John Modic

William P Gergen

Carl Lesley Willis

Robert G Lutz

Lie K Djiauw

Lorelle A Pottick

Mark A Berggren

Glenn R Himes

Donn A DuBois

John E Gorman

James H Collins

Dennis W Gilmore

Mark G Bouldin

Andres M Arismendi, Jr

Robert A Weiss

Jaroslav G Balas

Anne R Spell

Disclosed is an adhesive comprising an admixture of a high vinyl selectively hydrogenated block copolymer and an amorphous polyolefin. The high vinyl content of the block copolymer results in a more compatible admixture which in turn results in an adhesive that can be more easily processed than those prepared using conventional lower vinyl content block copolymers. The adhesives of the present invention can be prepared using less or even no compatibilizing additives which allows the adhesives to be used in end uses where such additives are undesirable.

Adhesive composition

This invention is a process comprising the steps of contacting an alkali metal initiator and Group VIII metal hydrogenation catalyst residue containing polymer solution (which is often referred to as the polymer cement) with water and carbon dioxide or an aqueous solution of an inorganic acid such as phosphoric or sulfuric acid and further contacting the solution with ammonia wherein at least one mole of both water and carbon dioxide are added per mole of alkali metal, or at least one mole of acidic protons from the inorganic acid is added per mole of alkali metal, the water or the aqueous acid solution are added at less than 15 percent by weight based on the polymer solution in order to prevent fast settling, and ammonia is added so that the pH of the aqueous phase is between 9 and 12.

Treatment of polymer solution with acid and ammonia to improve polymer color

A super-tough polymeric composition comprising an engineering thermoplastic and a modified radial polymer. The engineering thermoplastic is selected from the group consisting of polyamides, thermoplastic polyesters, polyphenylene ether resins, polyarylene sulfide resins, polysulfone and the like. The modified radial polymer is modified by grafting a compound containing a carboxylic acid or carboxylic acid derivative group. The modified, radial polymer has from about 3 to about 50 arms, as determined using light scattering techniques and the arms will be olefin polymers. The polymer compositions will yield shaped articles which fail ductilely when tested using ASTM procedure D-256 at room temperature and some at -20.degree. F.

Modified radial polymers

Blends of a sulfonated thermoplastic block polymer and a compatible extender oil are described. The block copolymer is first selectively hydrogenated and thereafter modified by grafting sulfonic acid containing functional groups primarily in the alkenyl arene blocks. Neutralization of the acid groups to a metal salt is preferred to prepare oil extended blends that retain substantial amounts of non-extended mechanical properties.

Selectively sulfonated block copolymers/extender oils

A super-toughened multiphase thermoplastic composition is provided by combining at least one modified selectively hydrogenated conjugated diene/alkenyl arene block copolymer to which has been grafted an effective amount of succinic groups primarily in the selectively hydrogenated conjugated diene blocks thereof and optionally at least one unmodified selectively hydrogenated conjugated diene/alkenyl arene block copolymer with at least one .alpha.,.omega.-polyamide.

High impact resistant blends of thermoplastic polyamides and modified

Compositions consisting essentially of from 60% to 95% by weight of the polymer components of a high flow polypropylene and from 40% to 5% by weight of a polystyrene-hydrogenated polyisoprene-polystyrene-hydrogenated polyisoprene block copolymer have excellent low temperature impact strength and high heat distortion temperature for molding large automobile parts.

Impact modification of polypropylene with styrene/isoprene tetrablock

Compositions consisting essentially of from 60% to 95% by weight of the polymer components of a high flow polypropylene and from 40% to 5% by weight of a polystyrene-hydrogenated polyisoprene-polystyrene block copolymer have excellent low temperature impact strength and high heat distortion temperature for molding large automobile parts.

Impact modification of polypropylene with styrene/isoprene triblock

Compositions comprising a polypropylene grafted with polystyrene and a selectively hydrogenated monoalkenyl aromatic/conjugated diene block copolymer have improved melt viscosity and toughness when the block copolymer component is designed to have weak monoalkenyl aromatic domains.

Blends of polystyrene/polypropylene grafted polymers and elastomeric

The present invention is a bituminous roofing composition which is especially useful to coat and/or saturate a roll roofing membrane. The composition comprises from 2 to 10 percent by weight, based on block copolymer plus bitumen, of a block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene, from 25 to 300 parts by weight per hundred parts of said block copolymer of an endblock compatible resin which has a softening point above 100.degree. C., and the balance being a bituminous material. Preferably, the solubility parameter of the endblock resin is within 0.3 [cal/cm.sup.3 ].sup.1/2 of that of the vinyl aromatic hydrocarbon portion of the block copolymer.

Torchable roll roofing composition

A torchable roll roofing membrane which comprises a reinforcing mat which is saturated and coated with bituminous composition comprising a bituminous component and, optionally, an unhydrogenated block copolymer of a monoalkenyl aromatic hydrocarbon and a conjugated diolefin, and coated onto one surface, a bituminous composition comprising a bituminous component and a hydrogenated block copolymer of a monalkenyl aromatic hydrocarbon and a conjugated diolefin.

Torchable roll roofing membrane

The present invention relates to a high impact resistant polymeric composition comprising a polyester and a thermally stable modified selectively hydrogenated block copolymer wherein at least one acid compound or a derivative thereof is grafted to the block copolymer. Poly(alkylene terephthalates) are preferred thermoplastic polyesters. The block copolymer will comprise at least one polymeric block of a monoalkenyl arene and at least one polymeric block of at least one conjugated diolefin.

High impact resistanct blends of thermoplastic polyesters and modified

A bituminous composition comprising: (a) a bitumen, (b) a block copolymer of at least one conjugated diolefin and at least one vinyl aromatic hydrocarbon, and (c) a thermoplastic or low crystallinity polymer.

Modification of asphalt

A thermoplastic polymer which possesses excellent mechanical properties at both room and elevated temperatures is obtained by reacting an acyl sulfate with a block copolymer composed of at least one conjugated diene block and one alkenyl arene block. The block copolymer is first selectively hydrogenated and thereafter modified by grafting sulfonic acid functional groups primarily in the alkenyl arene blocks. The mechanical properties may be varied and controlled by varying the degree of functionalization (amount of sulfonation), and the degree of neutralization of the sulfonic acid groups to metal sulfonate salts.

Growing community of inventors

Houston, TX, United States of America

Richard Gelles