Arkema Inc.

Arkema France

Rong Maria Hu

Kyu-Jun Kim

Paul R Lavallee

Mark L Lavach

Jeremy L Grove

Jiaxin Jason Ge

Robert A Wanat

Mark A Aubart

Wayne Devonport

Michael C Kaufman

A water soluble polymer or polymeric adduct has a backbone comprising a plurality of segments with amine functional groups and hydroxyl functional groups with a number average molecular weight of about 5.00 to 1,000,000 Daltons. The polymeric adduct may be formed as an addition product by reacting at least one multifunctional amine compound reacted with a one or more polyfunctional epoxy compounds and/or one or more monofunctional epoxy compounds, such that there are 1.3 to 3.8 reactive amine functional groups per reactive epoxy functional group. An aqueous solution of the polymer or polymeric adduct has a viscosity of about 100 centipoise to 100,000 centipoise and a pH value of about 8 to 12 when the solution comprises 70 wt. % of the polymer or polymeric adduct dissolved in water. The polymeric adducts are useful fast setting additives for emulsions due to excellent stability when blended with anionically stabilized latex.

Water soluble polymers and polymer adducts along with aqueous solutions thereof

A latex product composition that includes an anionicaily-stabilized latex; at least one volatile base compound; and one or more water soluble, polymers or polymeric adducts that have a backbone with a plurality of amine functional groups and hydroxyl functional groups. The polymers or polymeric adducts may be an addition product formed from at least one multifunctional amine compound reacted with one or more polyfunctional epoxy compounds, one or more monofunctional epoxy compounds, or a combination thereof. The polymers or polymeric adducts are formed by the addition reaction of the amine compound and the one or more epoxy compounds with 1.3 to 3.8 amine functional group per epoxy functional group. The addition product may be present in about 0.1 to 15.0 wt. % and the at least one volatile base compound is present in about 1.0 wt. % to 10.0 wt. % based on the weight of the particles present in the anionicaily-stabilized latex.

Latex products having polymers and polymer adducts as quick-setting additives

The invention relates to an acrylic layer (in the form of a coating, film or sheet) useful as part of a photovoltaic module backsheet. The acrylic layer contains at least 40 percent of one or more acrylic polymers, including an acrylic polymer matrix and optionally acrylic impact modifiers. The acrylic polymer is preferably a polymer, copolymer, or terpolymer containing at least 50 weight percent of methylmethacrylate monomer units. The acrylic layer is flexible and optionally contains high levels of white pigment. It may also contain fluoropolymers such as polyvinylidene fluoride to improve weathering, processibility and film formation. The acrylic layer adheres to a polymer support layer such as polyethylene terephthalate (PET). A preferred substrate is PET that is pre-treated to improve adhesion, but unprimed PET can also be used. The backsheet provides excellent weatherability, environmental stability and reflectivity as part of a photovoltaic module.

Acrylic photovoltaic module backsheet

A latex product composition that includes an anionically-stabilized latex and one or more water soluble, polymers or polymeric adducts that have a backbone with a plurality of amine functional groups and hydroxyl functional groups. The polymers or polymeric adducts may be an addition product formed from at least one multifunctional amine compound reacted with one or more polyfunctional epoxy compounds, one or more monofunctional epoxy compounds, or a combination thereof. The amine compound and the one or more epoxy compounds are reacted to form polymers or polymeric adducts with the molar equivalent ratio of 1.3 to 3.8 amine functional group per epoxy functional group. The addition product may be present in about 0.1 to 15.0 wt. % and the at least one volatile base compound is present in about 1.0 wt. % to 10.0 wt. % based on the weight of the particles present in the anionically-stabilized latex.

Quick-setting coating compositions with low pH stability and water resistance

The invention relates to an acrylic copolymer additive useful as a process aid in highly filled polyvinyl chloride (PVC) and chlorinated polyvinyl chloride (CPVC) composites. The acrylic additive is especially useful in highly filled PVC flooring tiles, rolled flooring, pipe and siding. The acrylic copolymer additive contains from 50 to 79 weight percent of methyl methacrylate monomer units, and has a Tg of less than 90&#xb0; C.

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Norristown, PA, United States of America

Rong Maria Hu