Rohm and Haas Company

Dow Global Technolgoies LLC

Jonathan DeRocher

Antony Keith Van Dyk

Kimy Yeung

Kevin J Henderson

John Joseph Rabasco

Andrew Hejl

Gregoire Cardoen

David J Brennan

Lidaris San Miguel Rivera

James Keith Bardman

Anurima Singh

Tianlan Zhang

Lin Wang

Jessica Levin

Robert E Hefner, Jr

James Charles Bohling

Tao Wang

Steven G Arturo

Anthony K VanDyk

Jingchun Yang

Lidaris San Migueal Rivera

A hydrophilic polyurethane comprising polymerized units of: (a) a water-soluble polyol having hydroxyl functionality from two to four and a weight-average molecular weight from 800 to 16,000; and (b) an aliphatic polyisocyanate having isocyanate functionality from two to six; wherein polymerized ethylene oxide units comprise at least 85 wt % of said hydrophilic polyurethane; and wherein a product of weight fraction of polymerized ethylene oxide units and polyethylene oxide mean molecular weight is from 4,200 to 16,000.

Polyether-urethane-urea additives for block resistance and open time

The present invention relates to a process comprising the step of contacting an aqueous dispersion of swelled polymer particles with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L. The swelled polymer particles arise from neutralization of alkali swellable polymer particles having a high acid core content and a low Tshell. The composition arising from the process of the present invention is useful for improving open time, especially for low VOC coatings applications.

Preparation of a coatings formulation with alkali swellable polymer particles

The present invention relates to a process for preparing a coatings composition with an open time additive comprising the steps of a) contacting an aqueous dispersion of alkali swellable polymer particles with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L; and b) neutralizing the alkali swellable particles with a non-volatile base after or upon contact with the rheology modifier and the binder to form swelled multi-staged polymer particles; wherein the alkali swellable polymer particles comprise a shell having a Tof not greater than 25&#xb0; C. and an acid functionalized core; and wherein the core-to-shell ratio is in the range of from 1:3.2 to 1:10. The composition arising from the process of the present invention is useful for improving open time, especially for low VOC coatings applications.

The present invention relates to a composition comprising an aqueous dispersion of multistage polymer particles with a first phase comprising structural units of a carboxylic acid monomer and a nonionic ethylenically unsaturated monomer; and a second phase with a calculated Tof less than 50&#xb0; C. and comprising a mixture of polymers which together comprise structural units of styrene or methyl methacrylate or both; structural units of one or of n-butyl acrylate, 2-ethylhexyl acrylate, ethyl acrylate, or n-butyl methacrylate; and structural units of a carboxylic acid monomer. The composition is useful as an open time additive in coatings formulations.

Aqueous dispersion of mutlistage polymer particles

The present invention relates to a process for preparing an aqueous dispersion of neutralized multistage polymer particles comprising the steps of contacting under emulsion polymerization conditions a) an aqueous dispersion of first polymer particles with b) first monomers to form an aqueous dispersion of 2-stage polymer particles; then contacting under emulsion polymerization conditions the aqueous dispersion of 2-stage polymer particles with second monomers comprising to form an unneutralized aqueous dispersion of 3-stage polymer particles; then neutralizing the unneutralized aqueous dispersion of 3-stage polymer particles with a base to form an aqueous dispersion of neutralized 3-stage polymer particles, wherein the first and second monomers form a shell having a calculated Tof less than 50&#xb0; C. The process of the present invention is useful in preparing a composition that is useful as an open time additive in coatings formulations.

Process for preparing an aqueous dispersion of multistage polymer particles

The present invention relates to a coating composition which is a stable aqueous dispersion of polymer particles and a phenyl glycidyl ether adduct of maltodextrin. The composition of the present invention is useful for improving open time in coatings formulations.

Coating formulation with an open time additive

A composition comprising: (a) a hydrophilic polyurethane comprising polymerized units of: (i) a water-soluble polyol having hydroxyl functionality from two to four and a weight-average molecular weight from 800 to 16,000; and (ii) an aliphatic polyisocyanate having isocyanate functionality from two to six; wherein polymerized ethylene oxide units comprise at least 85 wt % of said hydrophilic polyurethane; and at least one of: (b) a saccharide having at least 5 hydroxyl groups and Mfrom 300 to 4,000; (c) a dispersant polymer having Mfrom 700 to 50,000 and from 10 to 55 wt % polymerized residues of C-Ccarboxylic acid monomer and (d) a surfactant having HLB&#x3e;11 and 12 to 100 polymerized units of ethylene oxide.

Compositions comprising polyether-urethane-urea additives for block resistance and open time

The present invention relates to a compound which is a di- and/or a tristyrylphenol monoglycidyl ether adduct of the compound of Formula I: where m is from 1 to 60. The compound of the present invention is useful as an open time additive in coatings formulations.

Di- or tristyrylphenol monogycidyl ether adduct of maltodextrin

The present invention relates to a composition comprising: a) an aqueous dispersion of i) polymer particles functionalized with structural units of a phosphorus acid monomer; and ii) TiOparticles; b) a sulfur acid functionalized dispersant; and c) a carboxylic acid functionalized dispersant. The composition of the present invention addresses a need in the art by providing a way to tune TiO-binder composite formation efficiency with relative ease.

Coating composition with phosphorus acid-functionalized latex particles and acid functionalized dispersants

The present invention relates to a compound which is a phenyl glycidyl ether adduct of maltodextrin and its method of preparation. The compound of the present invention is useful as an open time additive in paint formulations.

Phenyl glycidyl ether adduct of maltodextrin

The present invention relates to a stable aqueous pigment dispersion including: an aqueous medium, pigment particles, and from 0.1% to 15%, by weight based on the weight of pigment, of a certain first water-soluble polymer; and 2) a certain second water-soluble polymer; wherein the dispersant comprises a proportion of the first polymer to the second polymer of from 0.1:1 to 10:1 on a solids basis, and the first polymer and the second polymer are miscible in those proportions; and wherein the dispersant is substantially free of structural units of phosphorus acid monomers and their salts. The invention also relates to a method for forming the stable aqueous dispersion and a dry coating formed from the aqueous dispersion. The stable aqueous dispersion is useful, inter alia, for forming certain composite particles.

Aqueous pigment dispersion

A stable aqueous dispersion including certain composite particles and a method for forming the stable aqueous dispersion is provided. The composite particles include a pigment particle, the pigment particle having disposed thereon a certain water-soluble polymer including copolymerized carboxylic acid monomer and N-containing monomer and the pigment particle bearing the water-soluble polymer having disposed on it a plurality of water-insoluble polymer particles. Also provided is a dry coating formed from the aqueous dispersion.

Aqueous dispersion of composite particles

The present invention is a composition comprising a) a stable aqueous dispersion of polymer particles functionalized with structural units of a phosphorus acid monomer or a salt thereof and; b) a dispersion of pigment particles stabilized by an adsorbing water-soluble dispersant functionalized with structural units of a sulfonic acid monomer or a salt thereof. The composition of the present invention is useful in providing excellent storage stability for pigmented paints formulated with the sulfonic acid functionalized dispersant described herein.

Pigmented coating composition with a sulfonic acid functionalized dispersant and a phosphorus acid functionalized binder

The present invention is a composition comprising a) a stable aqueous dispersion of polymer particles functionalized with structural units of a phosphorus acid monomer or a salt thereof and; b) a water-soluble polymer functionalized with structural units of a sulfonic acid monomer or a salt thereof as well as a method comprising mixing the stable aqueous dispersion of the phosphorus acid functionalized polymer particles with the sulfonic acid functionalized polymer, and TiO. The composition of the present invention is useful as a coatings formulation that provides improved hiding over phosphorus acid functionalized binders that do not include the water-soluble polymer. Alternatively, the same hiding benefit is seen at lower phosphorus acid concentration when the sulfonic acid functionalized polymer is present.

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Coopersburg, PA, United States of America

Jonathan DeRocher