Chevron Phillips Chemical Company LP

Phillips Petroleum Company

Chevron Philips Chemical Company, LP

David L Hartsock

Jinping Joe Zhou

John Mark Brown

Cliff C Pettey

James A Keane

John David Wilkey

Ralph C Farrar, Jr

William H Beever

Carleton E Stouffer

Jay M Chaffin

Francis X Mueller, Jr

Vergil H Rhodes

Mark D Hanes

Disclosed are cold flow resistant and dimensionally stable compositions containing a diene rubber and a conjugated diene monovinylarene block copolymer, and generally, these compositions have solutions viscosities and cold flows that are less than that of the diene rubber. Methods for reducing cold flow and for storage-stabilizing bales of diene rubbers also are disclosed.

Cold flow resistant compositions containing rubber and a block copolymer

We disclose a composition comprising (i) a monovinylarene-conjugated diene copolymer and (ii) an acrylate terpolymer. The composition can be in the form of a film. We also disclose a container comprising a container structure and a shrink label in contact with the container structure's exterior surface. We also disclose a method of applying a shrink label to a container structure.

Composition for monovinylrenic-based shrink label films

We disclose compositions, comprising (i) from about 25 parts by weight to about 95 parts by weight of a monovinylarene-conjugated diene coupled block copolymer comprising at least one tapered block, having a blocky monovinylarene content of less than 90 wt % of total monovinylarene units, and comprising a terminal monovinylarene block having a molecular weight of less than 60,000 g/mol; and (ii) from about 5 parts by weight to about 75 parts by weight of a monovinylarene-alkyl(meth)acrylate copolymer, comprising (ii-a) monovinylarene units and (ii-b) either alkyl acrylate units, alkyl methacrylate units, or both. The compositions can be used in shrink film or rigid packaging applications.

Binary and ternary blends comprising monovinylarene/conjugated diene block copolymers and monovinylarene/alkyl (meth)acrylate copolymers

A polymer blend composition comprising (A) a monovinylarene/conjugated diene block copolymer, and (B) a styrenic polymer of styrene/methyl methacrylate is provided. A process for preparing the composition and articles prepared from the composition are also provided.

Blends of a styrenic polymer and monovinylaren/conjugated diene block

Residual volatiles in styrene polymers can be reduced by combining a minor amount of a styrene-conjugated diene block copolymer with the styrene polymer.

Reduction of residual volatiles in styrene polymers

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Bartlesville, OK, United States of America

David L Hartsock