Wacker-chemie Gmbh

Wacker Polymer Systems Gmbh & Co. Kg

Peroxid-chemie Gmbh

Wacker-chemie Gmbh Hanns- Seidel-platz 4

Wacker Polymer Systems, Gmbh & Co.

Wacker Chemie Ag

Klaus Kohlhammer

Abdulmajid Hashemzadeh

Walter Dobler

Gerhard Koegler

Monika Rockinger

Hermann Petersen

Reinhard Haerzschel

Claudia Schmidt

Wilfried Huster

Herbert Eck

Peter Ball

Klaus Adler

Konrad Alfons Wierer

Reiner Figge

Wolfgang Deinhammer

Hermann Lutz

Maximilian Dorn

Richard Goetze

Eberhard Hagel

Thomas Lehmann

Andreas Lumpp

Peter Weiler

Susanne Seidl

Herbert Proebstl

Sabine Gruber

Monika Schwemmer

Herbert Pr&ouml;bstl

Wolfgang Roth-Greiner

Henk Mosseveld

The present invention provides a crosslinkable polymer composition in the form of its aqueous polymer dispersion or polymer powder, including A) a copolymer having a glass transition temperature Tg or a melting temperature of &#x2267;30&#xb0; C. and containing units derived from one or more comonomers selected from the group consisting of vinyl esters of branched or unbranched alkylcarboxylic acids of 1 to 18 carbon atoms, acrylic esters or methacrylic esters of branched or unbranched alcohols of 1 to 15 carbon atoms, dienes, olefins, vinyl aromatics and vinyl halides and from 0.1 to 50% by weight, based on the total weight of the comonomers, of one or more ethylenically unsaturated carboxyl-containing comonomers, and B) a copolymer containing units derived from one or more comonomers selected from the group consisting of vinyl esters of branched or unbranched alkylcarboxylic acids of 1 to 18 carbon atoms, acrylic esters or methacrylic esters of branched or unbranched alcohols of 1 to 15 carbon atoms, dienes, olefins, vinyl aromatics and vinyl halides and from 0.1 to 50% by weight, based on the total weight of the comonomers, of one or more ethylenically unsaturated comonomers having functional groups capable of entering a covalent bond with the carboxyl groups of said copolymer A).

Crosslinkable polymer composition

Particulate materials are cold molded by preheating a binder and the material to be bound to a temperature of from 160 to 240&deg; C., and then press molding at a temperature less than 80&deg; C. and at a pressure of from 1 to 120 bar to give a molding, wherein the binder contains a polymer powder or aqueous polymer dispersion thereof, the polymer having a glass transition temperature Tg greater than 80&deg; C. and a complex viscosity less than 15,000 Pa&middot;s at 190&deg; C., and derived from one or more comonomer units from the group of vinyl esters of optionally branched C alkylcarboxylic acids, (meth)acrylic esters of optionally branched C alcohols, dienes, olefins, vinylaromatics, and vinyl halides. The moldings exhibit excellent properties including resistance to sagging at elevated temperatures, and are recyclable.

Process for the cold molding of particulate materials

Process for forming recyclable articles

Compositions containing addition polymers prepared using crosslinkable protective colloids

Crosslinkable polymer compositions are provided which can be in the form of a polymer powder which is redispersible in water or as an aqueous dispersion. The polymer composition is composed of A) a copolymer of one or more comonomers of vinyl esters of straight-chain or branched alkanecarboxylic acids having 1 to 18 C atoms, acrylates or methacrylates of branched or straight-chain alcohols having 1 to 15 C atoms, dienes, olefins, vinylaromatics and vinyl halides, and of from 0.1 to 10% by weight, based on the total weight of the comonomers, of one or more ethylenically unsaturated comonomers containing epoxide groups, and B) one or more non-copolymerizable compounds having at least two epoxide groups. The invention furthermore relates to a process for the preparation of the crosslinkable polymer compositions and their use in chemical products for the construction industry.

Fiber binding powder composition for consolidating fiber materials

This invention relates to a process for prebinding fiber materials by means of a pulverulent binder composition. It further relates to the use of the prebound fiber material for producing plastics moldings from fiber-reinforced unsaturated polyester resins or epoxy resins by laying up the prebound fiber material, saturating the fiber material with the unsaturated polyester resin or epoxy resin and forming the molding.

Prebinding of fiber materials

A process is provided for producing fast curing bonded with phenolic resin, which comprises pulverulent phenolic resins mixed with or applied to the substrate to be adhered together with pulverulent addition polymers selected from the group consisting of polyvinyl alcohols and addition polymers, stabilized by hydroxyl-containing protective colloids of at least one monomer selected from the group consisting of the vinyl esters of branched or unbranched carboxylic acids of 1 to 12 carbon atoms, the esters of acrylic acid and methacrylic acid with branched or unbranched alcohols of 1 to 12 carbon atoms, vinylaromatics, vinyl halides, olefins and dienes, and subsequently, by the employment of elevated temperature and optionally elevated pressure, cured and processed into a shaped article.

Process for producing fast curing molding compounds bonded with phenolic resin

The invention discloses a method of using crosslinkable polymer powders for producing ballistic-resistant fiber materials, which comprises consolidating the textile sheet materials by means of pulverulent crosslinkable copolymers which are based on ethylenically unsaturated monomers and have a glass transition temperature Tg or a melting point of &gE;40&deg; C. and a melt viscosity of &gE;2000 mPas.

Use of polymer powder for producing ballistic-resistant fiber materials

Solvent-resistant textile binder

Water-soluble cross-linkable copolymers

The invention provides a powdered crosslinkable textile binder composition for producing polymer bonded textile moldings or sheet materials, comprising

Powdered crosslinkable textile binder composition

The invention is a ready-to-use, water-redispersible powder composition useful for preparing photographic recording materials or inkjet recording materials, which comprises a mixture containing polymers made from ethylenically unsaturated monomers and gelatin, wherein the polymers are prepared by emulsion polymerization in the presence of at least one emulsifier selected from emulsifiers with ionic and nonionic groups and if exclusively ionic emulsifiers are used, the copolymerization is carried out in the presence of comonomers which contain one or more groups selected from --COOH, --OH, SO.sub.3.sup.-, NCH.sub.2 OH and --C.dbd.O.

Redispersible powder compositions for preparing photographic recording

Use of aqueous dispersions of two-phase emulsion graft copolymers as

Graft and core-shell copolymers having improved phase bonding between

Growing community of inventors

Marktl, Germany

Klaus Kohlhammer