Rohm and Haas Company

Hexion Inc.

Westlake Epoxy Inc.

David Flosser

Larry S Corley

Philippe P Maillot

Bedri Erdem

Mingyu Ye

Patricia Garcia

Lucy Phan

Nawal K Sharma

Alejandro Ceron

Jerry R Hite

Jamie J Juliette

Michael A Curtis

Donna Williams

Larry Steven Corley

Jerrick Juliette

An epoxy oligomerization catalyst can be employed to prepare an epoxy resin employing a method including admixing a first epoxy resin having a first epoxy equivalent weight of from about 100 to about 600 with a diphenolic compound, and a catalyst, thereby forming a second epoxy resin having a second epoxy equivalent weight of from about 200 to about 10,000; wherein the catalyst is a guanidinium catalyst. The second equivalent weight is greater than the first equivalent weight.

Process for preparing epoxy resins

Compositions, methods, and coating composition using a curing agent are provided herein. In one embodiment, a curing agent for epoxy resins may be prepared using a formulation including: (a) an adduct of: (i) a diglycidyl ether of a bisphenol, and (ii) a first polyamine; (b) a second polyamine; and (c) water; wherein the composition has an amine hydrogen equivalent weight, based on solids, of less than or equal to 105.

Curing agent for epoxy coatings

A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants.

Transesterification process

A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor, wherein the water content in the reaction zone at the start of the transesterification step is from 0.2 to 1.1 weight percent, based on the weight of the materials in the reaction zone. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants.

This invention provides a process for reducing biacetyl in alpha-, beta-unsaturated carboxylic acid esters, particularly in acrylic or methacrylic (hereinafter '(meth)acrylic') esters, which comprise low levels of weak acid.

Process for producing methyl methacrylate having reduced biacetyl content

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Missouri City, TX, United States of America

David Flosser