Wacker Chemie Ag

Wacker-chemie Gmbh

Consortium Fur Elektrochemische Industrie Gmbh

Oliver Schaefer

Juergen Stohrer

Peter Randel

Thomas Lehotkay

Bernd Pachaly

Herbert Barthel

Torsten Gottschalk-Gaudig

Wolfgang Ziche

Andreas Bauer

Johann Mueller

Christian Ochs

Mario Heinemann

Dieter Heldmann

Petra Gratzl

Thomas Hohberg

Katja Huettl

Walter Eichberger

Wolfgang Doering

Philippe Moens

Juergen Kuepfer

Christopher Briehn

Sandra Bachmaier

Ralph Hiemeyer

Low molecular weight silicone copolymers prepared by reacting an oxamido ester-terminated silicone with a polyetheramine and a primary or secondary amine are useful in treating fabrics to obtain a soft hand and also hydrophilicity, and can be prepared without the use of highly toxic reagents.

Silicone copolymers production thereof and use thereof for treatment of fibrous substrates

Oxamide-functional siloxanes are prepared by reacting (A) silanes of the general formula (I) with(B) siloxanes selected from(B1) linear siloxanes of the general formulaHO[SiRO]H&#x2003;&#x2003;(II)and(B2) cyclic compounds of the general formula(SiRO)&#x2003;&#x2003;(III),in the presence of(C) catalysts.

Process for preparing oxamide-functional siloxanes

Aqueous emulsions contain (A) oxamidoester-functionalized organopolysiloxanes having units of the formulaR(OR)ZSiO&#x2003;&#x2003;(I)whereZ is a group of the formula&#x2014;Y&#x2014;NR&#x2014;CO&#x2014;CO&#x2014;O&#x2014;R&#x2003;&#x2003;(II),with the proviso that the sum a+b+c is &#x2264;3 and each molecule contains at least one radical Z.(B) emulsifiers and(C) water.

Aqueous emulsions of oxamidoester-functionalized organopolysiloxanes

Oxamidoester-functional alkylalkoxysilanes are prepared in high yield by the reaction of an alkylalkoxysilane with an oxalic diester.

Silanes comprising oxamido ester groups

Oximido ester-functional siloxanes, including those with oxamido ester side chains, are produced by reacting an alkoxy oxamido ester silane with water, optionally in the presence of further alkoxy silanes.

Process for preparing siloxanes containing oxamido ester groups

Polymer compositions containing a polyamide polymer and a high molecular weight organopolysiloxane copolymer containing amide, urethane, urea, or thiourea groups exhibit high tensile strength but are soft elastomeric thermoplastics.

Polymer compositions comprising siloxane-organo-copolymers

Polysiloxane/polymer copolymers are used in conjunction with conventional polymer binders for production of wood fiber composites, and improve processing characteristics as well as end product properties.

Mixtures containing plastic and organic fibres

Composites of a fluoropolymer and an organopolysiloxane/polyurethane/polyurea adhesive exhibit strong adhesion while also offering desirable handling properties.

Fluoropolymer-silicon compounds and method for production

Photovoltaic modules are prepared by laminating an active device to a glass cover plate by means of a thermoplastic siloxane copolymer. The siloxane copolymer provides good adhesion, freedom from water absorption, and yet can be reworked either in the field or during recycling of the solar cell components.

Laminates comprising thermoplastic polysiloxane-urea copolymers

Crosslinkable polymers containing organopolysiloxane, polyurea, and/or polyurethane moieties further contain at least one photopolymerizable ethylenically unsaturated group and a photoinitiator which allows crosslinking upon exposure to radiation.

Crosslinkable siloxane urea copolymers

Mono-hydroxyl-functional organopolysiloxanes are prepared with minimal byproducts and increased storage stability by reaction of cyclotrisiloxanes with sil(ox)anols containing less than 1 weight percent water in the presence of heterogenous alkali metal or alkaline earth metal oxide or carbonate catalysts.

Process for preparing diorganopolysiloxanes

Hydroxyalkyl-functionalized particles are prepared by reacting a cyclic siloxy compound containing a glycol residue, an oxygen of the glycol residue bonded to silicon of a siloxy group through an intermediary methylene or substituted methylene linking group.

Hydroxyalkyl-functionalized fillers

The invention relates to a process for preparing organopolysiloxane/polyurea/polyurethane block copolymers, and also to the use of the organopolysiloxane/polyurea/polyurethane block copolymers prepared by means of the process.

Organopolysiloxane/polyurea/polyurethane block copolymers

Surface-modified solids bearing groups of the formula ISiR&#x2014;R&#x2014;NH&#x2003;&#x2003;(I),are prepared by reacting a solid having OH groups on a surface thereof with a cyclic silazane of the general formula IIwhere

Solids surface-modified with amino groups

Silanes of the formulaRRSiL&#x2003;&#x2003;(I)where each R is identical or different and is a monovalent, optionally substituted hydrocarbon radical which is free of aliphatic carbon&#x2014;carbon multiple bonds and has from 1 to 18 carbon atoms per radical,

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Burghausen, Germany

Oliver Schaefer