Dover Chemical Corporation

Dove Chemical Corporation

Don R Stevenson

Michael Jakupca

Jacob Weingart

John Regula

Thomas Jennings

Mark E Harr

John Nussbaumer

Satyan R Kodali

Daryl Stein

Marc Nolen

Daryl L Stein

Mick Jakupca

A composition having a compound having the structure: wherein each R is an independently selected alkylphenol-free moiety that is a Calkyl, Calkenyl, Ccycloalkyl, Ccycloalkylene, Cmethoxy alkyl glycol ether, Calkyl glycol ether, or Y&#x2014;OH moiety; wherein each Y is an independently selected alkylphenol-free moiety that is a Calkylene, Ccycloalkylene, or Calkyl lactone moiety; wherein m is an integer ranging from 1 to 100; and wherein x is an integer ranging from 1 to 1000.

Polymeric poly-phosphorus lubricant additives for metal working

A composition having polyvinylchloride; and a chlorinated ester having the chemical structure: 

Chlorinated ester polyvinyl-chloride secondary plasticizer and related methods

The invention relates to a liquid polymer additive composition comprising at least one phosphite ester selected from the group consisting of aryl phosphites, alkyl phosphites, aryl/alkyl phosphites, bisphenol-A phosphites, dialkylene glycol phosphites and polydialkylene glycol phosphites, pentaerythritol phosphites, p-cumyl phenol phosphites and blends thereof and approximately from 50 to 800 ppm inclusive of zinc per 100 parts resin. The stabilizer is used as either a complete or a partial replacement of toxic-metal containing antioxidant stabilizer additives.

Phosphite ester additive composition

This invention discloses blends of phosphites comprising bis-(2,4-dicumylphenyl) pentaerythritol diphosphite and hindered phenol antioxidants useful as stabilizers against thermooxidative degradation of polymers during melt processing. Polymer compositions comprising the blends show improved resistance to thermooxidative degradation during melt processing as measured by melt flow index and yellowness index.

Blends of phosphites and antioxidants

This invention discloses synergistic blends of phosphates and lactones having a base structure of 3-phenylbenzofuran-2-one with or without other additives as stabilizers for polymers, particularly during melt processing as evidenced by changes in melt flow and in some instances, resistance to yellowing.

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Dover, OH, United States of America

Don R Stevenson