Celanese Gmbh

Hoechst Celanese Corporation

Celanese Coatings & Specialties Company

Thomas M Powanda

George L Collins

Ralph F Patella

Robert H Imes

Charles A DeFazio

Edward J Kuzma

Charles B Rybny

Joseph A Vona

Rex L Bunkley

The instant invention involves a process for preparing carboxylic acid esters which comprises coreacting a carboxylic acid and an aliphatic mono or polyol by maintaining one of the reactants in a reactor at elevated temperatures and adding the other reactant to the reactor over a period of time. By employing this process esterification times are significantly reduced.

Accelerated preparation of carboxylic acid esters

The instant invention involves a process for preparing acrylic acid esters which comprises coreacting an acrylic acid and an aliphatic mono or polyol by maintaining one of the reactants in a reactor at elevated temperatures and adding the other reactant to the reactor over a period of time. By employing this process esterification times are reduced significantly.

Accelerated preparation of esters

New emulsion polymers comprising vinyl acetate-acrylate or methacrylate emulsion polymer containing in the polymer an .alpha.,.beta.-ethylenically unsaturated acid ester of a polyol. For example, pentaerythritol tri- and tetra-acrylate, trimethylolpropane triacrylate, hexanediol diacrylate, etc.

Incorporation of multifunctional monomers (PETA, TMPTA, and HDODA) in

Aqueous dispersions of synthetic polymers have been made by polymerizing ethylenically unsaturated monomers in water in the presence of a protective colloid prepared by copolymerizing the alcoholysis product of a mixture of about 1 to about 3 mols of a di-, tri-, or tetra- polyol and about 1 mole of a tri- or a tetra- acrylate ester. Such aqueous dispersions are useful in paints, adhesives and textile applications, and exhibit improvements in wet adhesion and abrasion resistance.

Protective colloids from alcoholysis products of polyalcohols and

An ultraviolet curable coating composition having improved clarity and resin compatability is prepared by co-reacting an acrylate or methacrylate co-polymer containing hydroxy and carboxy groups with added polyol and maleic anhydride to form an unsaturated polyester, and then blending the unsaturated polyester with polyunsaturated monomers, monounsaturated monomers and a photoinitiator, all of which will cure when exposed to ultraviolet radiation.

Unsaturated polyesters for ultraviolet curable coatings

Aqueous dispersions of synthetic polymers have been made by polymerizing ethylenically unsaturated monomers in water in the presence of a protective colloid which is a polymer of a hydroxyalkyl acrylate or methacrylate. Such aqueous dispersions are useful in paints, adhesives and textile applications.

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Middlesex, NJ, United States of America

Thomas M Powanda