Momentive Performance Materials Gmbh

Lesley Hwang

Antonio Chaves

Eric Raymond Pohl

Linda Vecere

Vikram Kumar

Robert J Pickwell

Shiu-Chin Huang Su

Prashant G Joshi

Constantine Kondos

Narayana Padmanabha Iyer

Christian Geismann

Martin Hofstetter

Richard W Cruse

Keith James Weller

William Michael York

Alain Lejeune

Andrea Trotto

Tiberiu Simandan

Louis M Panzer

Leda N Gonzalez

Ilaria Vecchi

Wesley E Sloan

Michael Stout

Adeyemi Adedayo Adepetun

Kujtim Bizati

Naryana Padmanabha Iyer

A silane based additive, rubber formulations including the additive and tires having tread portions made with the additive, together with methods of forming those products, are provided. Uncured rubber formulations in accordance with preferred embodiments of the invention comprise (1) a rubbery primary polymer or polymer blend, such as natural rubber and/or synthetic rubber; (2) reinforcing silica filler; (3) a network forming monomer or polymer, especially a thermosetting network forming moiety, for forming a secondary polymeric network; and (4) a silane containing one or more moieties of the aforementioned network forming polymer. In particular networks which can be generated in-situ are preferred. The cured rubber formulation should comprise the silica, having the secondary polymer network coupled thereto, within the rubber matrix, and not directly to the rubber chains via sulfidic linkages.

Polymer network forming silane compositions

A transesterification process for preparing alkoxysilane includes removal of metal transesterification catalyst from the alkoxysilane transesterification reaction medium.

Process for preparing alkoxysilanes

The invention is directed to a detectable and stable composition comprising an organofunctional silane and/or hydrolyzate and/or partial or complete condensate thereof, a colloidal metal oxide, a water soluble organic dye having a positive charge and a counterion derived from a carboxylic acid of from 1 to 6 carbon atoms, and water. The invention is also directed to a method for determining the uniformity and film thickness of a detectable composition applied to a substrate comprising applying to the surface of the substrate the detectable composition and measuring an optical property of the applied coating, the resulting measurement being related to the uniformity of the applied composition.

Coating composition and method for determining the uniformity and thickness of a no-rinse silane pretreatment

The present invention relates to a method for measuring the weight of a passivation coating composition on a moving substrate with minimal interruption. The method of present invention is especially useful for effective quality control in an industrial setting.

Method for determining the weight and thickness of a passivation or conversion coating on a substrate

The present invention relates to stable, zero or low VOC epoxy-containing polysiloxane oligomer compositions that provide for a high degree of chemical resistance to compositions containing organic resins, while at the same time, maintaining or improving the flexibility of these organic resin-containing compositions, to processes for preparing epoxy-containing polysiloxane oligomer compositions, and to uses in coatings, sealants, adhesives, and composites containing the same.

Epoxy-containing polysiloxane oligomer compositions, process for making same and uses thereof

Organofunctional silanes, inclusive of dimers and oligomers, are provided in which individual silanes possess both free and blocked mercaptan functionality or particular mixtures of the organofunctional silanes possess both free and blocked mercaptan functionality. The organofunctional silanes and silane mixtures are useful, inter alia, as coupling agents for elastomeric compositions, e.g., rubber formulations employed in the manufacture of tires, where they exhibit a desirable balance of low scorch and good performance properties.

Organofunctional silanes and their mixtures

Sulfur-containing silane and its partially to substantially complete hydrolyzate(s) are useful as additives for filled elastomeric compositions for tires and other cured rubber articles.

Sulfur-containing silane, filled elastomeric compositions containing same and articles made therefrom

A process is provided for preparing organofunctional silanes, inclusive of dimers and oligomers, in which individual silanes possess both free and blocked mercaptan functionality or particular mixtures of the organofunctional silanes possess both free and blocked mercaptan functionality. The organofunctional silanes and silane mixtures are useful, inter alia, as coupling agents for elastomeric compositions, e.g., rubber formulations employed in the manufacture of tires, where they exhibit a desirable balance of low scorch and good performance properties.

Process for making organofunctional silanes and mixtures thereof

Silane compositions of the general formula are provided herein comprising[(RO)(R)&#x2014;Si-M]-L-[(R)Ar&#x2014;(CR&#x2550;CR)]wherein R and Rare independently a hydrocarbon group of from 1 to about 20 carbon atoms; Rare each independently hydrogen or a hydrocarbon group of from 1 to about 20 carbon atoms; M optionally is a divalent hydrocarbon connecting group of from 1 to about 20 carbon atoms to link the silicon atom and the L group; L is a covalently bound hydrocarbon linking group of from 1 to about 20 carbon atoms or a heteroatom linking group selected from the group consisting of &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;NR&#x2014; wherein Ris hydrogen or a hydrocarbon group of from 1 to about 20 carbon atoms; Ris an alkyl group of 1 to 12 carbon atoms; Ar is a substituted or unsubstituted aromatic group; q is an integer of 1 to 4; t and c are each independently 0 or 1; and x, y and z are each independently integers of 1 to 3, inclusive, with the proviso that t is 1 when L is a heteroatom group. Also provided are processes for preparing the silane compositions and rubber composition comprising the silane compositions.

Silane compositions, processes for their preparation and rubber compositions containing same

Free flowing filler composition based on organofunctional silane and/or mixtures of organofunctional silanes possessing mercaptan and blocked mercaptan functionality. The invention also relates to articles of manufacture, particularly tires, made from the elastomer compositions described herein.

Free flowing filler composition based on organofunctional silane

A rubber composition containing a rubber component, a filler and at least one organofunctional silane and/or mixture of organofunctional silanes in which individual silanes possess both free and blocked mercaptan functionality or particular mixtures of the organofunctional silanes possess both free and blocked mercaptan functionality. The organofunctional silanes and silane mixtures are useful, inter alia, as coupling agents for elastomeric compositions, e.g., rubber formulations employed in the manufacture of tires, where they exhibit a desirable balance of low scorch and good performance properties.

Rubber composition containing organofunctional silane

A method for increasing the hardness of silica/rubber mixtures includes blending with the mixture at least one silane and a hardness-increasing amount of at least one member selected from the group consisting of thixotropic fumed silica, precipitated silica and an MQ resin, wherein Q is SiO, M is RRRSiO, and R,R,and Rare the same or different functional or non-functional organic groups, carbon black, a thermoplastic resin or a thermosetting resin.

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Chappaqua, NY, United States of America

Lesley Hwang