Trinseo Europe Gmbh

Dow Global Technolgoies LLC

Cheryl Weckle

Pascal E R E J Lakeman

Peter De Winde

Mary Ann Jones

Mary Jones

Polycarbonate-containing compositions having desirable properties, such as good resistance to environmental stress cracking, are achieved using a combination of a polycarbonate polymer, a compatibilizing agent and an olefinic elastomer. The polycarbonate-containing composition may include about 40-98 weight percent of one or more carbonates polymers; about 0.1-10 weight percent of one or more compatibilizing agents; and 0.1-10 weight percent of one or more olefinic elastomers. The polycarbonate-containing compositions (e.g., polycarbonate blend compositions) preferably have good chemical resistance to medium chain triglycerides. The compositions may be employed in components, such as housings, that require resistance to cleaning fluids used in hospitals. For example, the composition may be employed in components that require resistance to hospital grade tuberculosis disinfectants.

Polycarbonate containing compositions

The present invention is directed to an elastomer composition having at least two phases, one phase comprising a very low density polyethylene 'VLDPE' component and another phase comprising a propylene polymer component wherein the propylene polymer component comprises at least one branched polypropylene and the VLDPE phase is continuous. Preferably, the VLDPE component has a melt tan delta between about 0.7 and 8 as measured by parallel plate rheometer at 0.1 radians per second, 180&#xb0; C., and 10 percent strain; and the ratio of the melt tan delta of the VLDPE to the melt tan delta of the propylene component is from 0.5 to 4. The invention also provides a method of making such compositions, and to low gloss articles prepared from the same. The inventive compositions are particularly suitable for fabricating thermoformed sheeting with reduced gloss, most preferably employed as a skin in a composite interior automotive article comprising a shaped article and a negative thermoformed shaped skin or as non-carpet automotive flooring.

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Midland, MI, United States of America

Cheryl Weckle