E.i. Dupont De Nemours and Company

Kathy Lynn Fortmann

Olaf Norbert Kirchner

Jean-Michel Philippoz

Donald Edward Putzig

A process for forming molded articles, partcularly for forming by blow molding, by providing and forming articles from compositions made from blends containing (A) two copolyether ester elastomers that include acid end-groups, (B) an ethylene copolymer that includes at least one unsaturated epoxide group and acrylate and/or (meth) acrylate groups, at least one of (C) or (D) wherein (C) is an ethylene copolymer having acrylate and/or methacrylate groups and at least one anhydride of an unsaturated carboxylic acid and (D) is a rubbery polymer that can be finely dispersed and (E) a calcium compound capable of reacting with the acid end-groups of (A), preferably calcium oxide or calcium hydroxide.

Process for forming molded articles, particular by blow molding, utilizing compositions that include calcium reactants in blends containing copolyether ester elastomers and ethylene(meth)acrylate/unsaturated epoxide copolymers

Compositions that are particularly well-suited for blow molding are made from blends containing (A) two copolyether ester elastomers that include acid end-groups, (B) an ethylene copolymer that includes at least one unsaturated epoxide group and acrylate and/or (meth)acrylate groups, at least one of (C) or (D) wherein (C) is an ethylene copolymer having acrylate and/or methacrylate groups and at least one anhydride of an unsaturated carboxylic acid and (D) is a rubbery polymer that can be finely dispersed and (E) a calcium compound capable of reacting with the acid end-groups of (A), preferably calcium oxide or calcium hydroxide.

Calcium reactants in blends containing copolyether ester elastomers and ethylene(meth)acrylate/unsaturated epoxide copolymers

A process for producing a polyester or copolymer thereof is disclosed. The process comprises contacting at least one carbonyl compound such as, for example, adipic acid, terephthalic acid, salt thereof, or combinations thereof, in the presence of a catalyst, with an alcohol such as, for example, 1,4-butanediol. The catalyst can comprise a tetraalkyl titanate such as, for example, tetraisopropyl titanate and a phosphorous compound such as, for example, a mixture of butyl phosphate and dibutyl phosphate.

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Werl-Hilbeck, Germany

Kathy Lynn Fortmann