The Dow Chemical Company

Nancy B Tefertiller

Robert F Harris

Dwight K Hoffman

Kenneth A Burdett

Randall C Rains

John W Bozzelli

Thomas W Regulski

Sharon L Oriel

A stable copolymer dispersion is prepared by addition copolymerization of (1) a monomeric adduct of an active hydrogen compound, e.g., a polyether polyol, and an acrylyl compound such as methacryloyl chloride with (2) ethylenically unsaturated monomer(s), e.g., styrene or a mixture thereof with acrylonitrile, while (1) and (2) are dispersed or dissolved in an excess of an active hydrogen polyfunctional compound such as a polyether polyol. The molar ratio of acrylyl moiety to active hydrogen compound is less than 0.1:1. The resulting dispersion has a controlled particle size and a viscosity such that it is suitably employed in the production of polyurethane foams.

Stable dispersions of polymers in polyfunctional compounds having a

An addition polymer having a carbon-to-carbon backbone bearing at least two oxirane moieties per polymer molecule wherein the oxirane moieties are the reaction product of an isocyanate moiety and a glycidyl compound, such as glycidol, is readily cured to form a solid insoluble material.

Curable oxirane polymers

A stable copolymer dispersion is prepared by addition copolymerization of (1) an adduct of an active hydrogen compound, e.g., a polyether polyol, and an active ethylenically unsaturated isocyanate, e. g., 2-isocyanatoethyl methacrylate with (2) ethylenically unsaturated monomers(s), e.g., styrene or mixture thereof with acrylonitrile, while (1) and (2) are dispersed or dissolved in an excess of an active hydrogen polyfunctional compound. The resulting dispersion has a controlled particle size and a viscosity such that it is suitably employed in the production of polyurethane foams.

Addition polymerizable polymers having a polyethylenic backbone with pendant acryloyl urethane groups are usefully employed as flooring materials and in other applications utilizing radiation curable or chemically curable materials. Such polymers are advantageously prepared by reacting a polymer of an isocyanatoalkyl ester of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, e.g., 2-isocyanatoethyl methacrylate with an active hydrogen-substituted alkyl ester of acrylic acid, e.g., hydroxyethyl acrylate.

Addition polymerizable polyethylenic polymers having pendant acryloyl

Addition polymerizable polyethers having pendant ethylenically unsaturated urethane groups are usefully employed as flooring materials and in other applications utilizing radiation curable or chemically curable materials. Such urethane polyethers are advantageously prepared by reacting a polyether polyol such as a hydroxy terminated polypropylene glycol with an isocyanatoalkyl ester of an ethylenically unsaturated acid such as 2-isocyanatoethyl methacrylate.

Addition polymerizable polyethers having pendant ethylenically

Curable compositions containing (1) an epoxy resin containing a plurality of active hydrogens and (2) and addition polymer of an isocyanatoalkyl ester of an .alpha., .beta.-ethylenically unsaturated carboxylic acid such as 2-isocyanatoethyl methacrylate are usefully employed as coatings for metal substrates and in other applications which require hard surface coatings exhibiting resistance to chemicals and light.

Epoxy resin coating compositions

Water soluble or water dispersible reaction products are produced by reacting (1) an epoxy resin having an epoxy equivalent weight of at least about 500 with (2) an organic sulfide in the presence of (3) a protic acid having a dissociation constant greater than 1 .times. 10.sup.-.sup.5. Such reaction products can be used alone as coating compositions or can be blended with various resins which will react with pendent hydroxy groups on the above reaction product upon heating and thereby form a cross-linked product. The melamine resins are examples of suitable such 'cross-linkers'.

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Midland, MI, United States of America

Nancy B Tefertiller