Degussa Aktiengesellschaft

Evonik Degussa Gmbh

Huels Aktiengesellschaft

Other

Dieter Barfurth

Helmut Mack

Burkhard Standke

Jaroslaw Monkiewicz

Michael Horn

Peter Jenkner

Roland Edelmann

Albert-Johannes Frings

Ralf Laven

Thomas Schlosser

Hans-Dieter Naegerl

Sabine Giessler

Alber-Johannes Frings

Vincente Mans

Karl Goetzmann

Klaus Sommer

The present Invention relates to a mixture comprising catenary, branched and for cyclic siloxanes of the general formula (I) where x is 1, 2 or 3, the substituents R are (i) organofunctional groups selected from &#x2014;CH&#x2014;SH, &#x2014;CH&#x2014;S&#x2014;(CO)&#x2014;R', &#x2014;CH&#x2014;(O&#x2014;CH)&#x2014;OH with a=1 to 10, &#x2014;CH(O&#x2014;CH)&#x2014;OR&#x2032; with b=1 to 40, &#x2014;(CH)&#x2014;NH, &#x2014;(CH)&#x2014;NHR&#x2032;, &#x2014;(CH)&#x2014;NR&#x2032;, &#x2014;(CH)&#x2014;NH(CH)&#x2014;NH, &#x2014;(CH)&#x2014;N[(CH)&#x2014;NH]and &#x2014;(CH)&#x2014;NH(CH)&#x2014;NH(CH)&#x2014;NH, In which R&#x2032; is a linear, branched or cyclic alkyl group having 1 to 18 carbon atoms or an aryl group having 6 to 12 carbon atoms, (ii) hydroxyl, methoxy, ethoxy, 2-methoxyethoxy, isopropoxy, n-propoxy, isobutoxy and for n-butoxy groupe, and (iii) where appropriate, alkyl, alkenyl, isoalkyl, cycloalkyl or fluorcalkyl groups having 1 to 18 carbon atoms or aryl groups having 6 to 12 carbon atoms, whit the proviso that not more than one organofunctional group (i) is attached per silicon atom, the quotient of the molar ratio of the moiety (ii) to silicon le from I to 2, and the degree of oligornerization for compounds of the general formula I is in the range from 2 to 50. The present invention also relates to a specific process for preparing said siloxane mixtures and also to their use. 

Organofunctional siloxane mixtures

The present invention relates to a polymer dispersion wherein the components of a physical mixture comprising (i) at least one unsaturated silane of the general formula (I): [HC&#x2550;CX(Y)]Si(CH)(R)in which X is a hydrogen atom or a methyl group, Y is a divalent group selected from &#x2014;CH&#x2014; and &#x2014;C(O)O&#x2014;(CH)&#x2014;, n is 0 or 1, R is an alkoxy group selected from methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, and 2-methoxyethoxy, and p is 0 or 1, and (ii) at least one organosilane of the general formula (II): RSi(CH)(R)in which Ris a linear, branched or cyclic alkyl group having 1 to 18 carbon atoms or is an aryl group or is a polyether group, Ris an alkoxy group selected from methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy and 2-methoxyethoxy, and q is 0 or 1, and/or at least one silicic ester of the general formula (III): Si(R), in which groups Rare identical or different and Ris an alkoxy group selected from methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy and isobutoxy, are incorporated into the framework of the polymer, a process for preparing such a polymer dispersion, and its use.

Polymer dispersion comprising silicon compounds

The present invention relates to a composition acting as coupling agent between fillers and peroxidically crosslinking elastomers in rubber compounds, which comprises, as component comprising silicon compounds, a mixture a) of vinylalkoxysiloxanes with alkylalkoxy-siloxanes, or b) of vinylalkoxysiloxanes with phenylalkoxy-siloxanes, or c) of vinylalkoxysiloxanes with phenyl/alkyl-alkoxysiloxanes or d) of acrylic or methacrylic alkoxysiloxanes with alkylalkoxysiloxanes, or e) of acrylic or methacrylic alkoxysiloxanes with phenylalkoxysiloxanes, or f) of acrylic or methacrylic alkoxysiloxanes with phenyl/alkylalkoxysiloxanes, or g) of at least one co-oligomeric organosiloxane which, as organofunctional groups, bears at least one group from the series vinyl, acrylic and methacrylic, and at least one group from the series alkyl and phenyl, and at least one alkoxy or hydroxy group. The present invention further relates to the use of a composition of the invention as a coupling agent in filled and peroxidically crosslinking rubber compounds, to rubber compounds obtained in this way, and to items made therefrom.

Composition acting as coupling agent for filled and peroxidically crosslinking rubber compounds

A composition containing an alkoxysiloxane including a catenate alkoxysilane of formula I and/or a cyclic siloxane of formula II, and a crosslinkable polymer compound and the use thereof as a water scavenger, dryer or precuring retarderRSi&#x2014;O&#x2014;[SiR&#x2014;O&#x2014;]SiR&#x2003;&#x2003;(I) 

Alkoxysilane dryer for crosslinkable polymer compounds

A compound having at least one H&#x2014;Si group is reacted with an unsaturated aliphatic compound in the presence of a platinum catalyst and at least one organic additive component. The combination of platinum catalyst and additive component is one of:

Process for the hydrosilylation of unsaturated aliphatic compounds

Metal-free silane-terminated polyurethanes, a process for their preparation and their use

Mixture of catenate and cyclic siloxane oligomers, its preparation and use

Fillers surface-modified by treatment with an organosilane- and/or organosiloxane-containing agent for preparing filled polyamide compositions.

Organosilane-and/or organosiloxane-containing agent for filled polyamide

An encapsulated flame retardant is made by a process including applying an organic silicon composition to a powder flame retardant. The organic silicon composition is an organofunctional-silane or a mixture of organofunctional silanes, an oligomeric organosiloxane or a mixture of oligomeric organosiloxanes, or a solvent-containing preparation based on monomeric organosilanes and/or on oligomeric organosiloxanes, or a preparation based on water-soluble organopolysiloxanes, or mixtures of any or all of these. These surface-modified flame retardants are used in particular in polymers and polymer compounds, for rendering naturally occurring materials flame retardant, and also for the intumescent coating of combustible materials.

Surface-modified flame retardants containing an organic silicon composition, their use, and process for their preparation

The invention relates to the use of (1) a liquid functional organylorganyloxysilane bound to a carrier, or of a liquid (co)condensate derived from a functional organylorganyloxysilane and bound to a carrier for preparing cable compounds which comprise (2) a thermoplastic base polymer having polar functional groups and (3) a reinforcing or extending mineral filler.

Functional organylorganyloxysilanes on a carrier in cable compounds

Aminopropyl-functional siloxane oligomers

Stable compositions of water-soluble amino-and alkenyl-functional organosiloxanes, process for their preparation and their use

The present invention relates to surface-modified fillers obtained by mixing a filler with water, adding an water-based organosiloxane composition with very thorough mixing, wherein the organosiloxanes are soluble in water and contain, in addition to OH groups, at least one amino-functional group and optionally a functional group from the series consisting of alkyl, haloalkyl, alkenyl, glycidyl ether alkyl, acryloxyalkyl and methacryloxyalkyl, and wherein a functional group is bonded to each silicon atom of the organosiloxane, and drying the mixture. The present invention also provides a process for the surface modification of fillers, their use and ethylene-vinyl acetate copolymer compositions which include the surface-modified fillers.

Growing community of inventors

Rheinfelden, Germany

Dieter Barfurth