Dow Corning Corporation

Joseph Norbert Clark

Joseph T Braun

Paul Cornelius Van Dort

Robert A Ekeland

Shawn K Mealey

William J Schoenherr

Michael Sean Owens

Robert Harold Krahnke

Peter Lamont

Virgil J Johnson

Schuyler B Smith

Loretta N Kroupa

Schuyler B Smith, Deceased

Edward Joseph Benson

Madhu Baile

David G Coble

This invention relates to silicone coating composition comprising a solventless silicone coating composition and a liquid silicone mist suppressant composition obtained by a method comprising reacting a large excess of at least one organohydrogensilicon compound containing at least three silicon-bonded hydrogen groups with at least one compound containing at least two alkenyl groups in the presence of a platinum group metal-containing catalyst.

Silicone coatings containing silicone mist suppressant compositions

This invention relates to silicone coating composition comprising a solventless silicone coating composition and a liquid silicone mist suppressant composition obtained by a method comprising reacting at least one organohydrogensilicon compound containing at least two silicon-bonded hydrogen groups with a large excess of at least one organoalkenylsiloxane containing at least three silicon-bonded alkenyl groups in the presence of a platinum group metal-containing catalyst.

Coatings containing silicone mist suppressant compositions

The instant invention pertains to a method of producing silicone pressure sensitive adhesives wherein the method comprises (I) combining together (A) a benzene soluble, hydroxyl containing organopolysiloxane resin consisting essentially of R.sub.3 SiO.sub.1/2 siloxane units and SiO.sub.4/2 siloxane units, wherein R is a monovalent radical selected from the group consisting of hydrocarbon and halogenated hydrocarbon radicals having from 1 to 10 carbon atoms; there being from 0.5 to 1.5 R.sub.3 SiO.sub.1/2 units for every SiO.sub.4/2 units and there being 1.0 to 4 wt %, based on FTIR, hydroxyl functionality and (B) a hydroxyl containing polydiorganosiloxane having a viscosity of .gtoreq.100 mPa's and (C) a catalyst selected from the group consisting of a weak organic acid or metal salt thereof; and thereafter (II) heating the mixture of (A), (B) and (C) for a time sufficient to produce the silicone pressure sensitive adhesive.

Method of making silicone pressure sensitive adhesives

A pressure sensitive adhesive tape comprising a tape substrate having at least a portion of one or more sides coated with a silicone pressure sensitive adhesive is constructed using an adhesive which cures to a permanent adhesive. The adhesive is covered on the outer side with a release film, preferably coated with a fluorosilicone release layer, to allow storage of the tape. Preferably the curable silicone pressure sensitive adhesive is cured upon exposure to moisture, the tape therefore being stored in the absence of moisture. A silicone elastomeric structural glazing tape is made by using a silicone elastomer as the tape substrate. The tape can be used to bond glazing panels to building components without the use of other means of fastening.

Curable silicone pressure sensitive adhesive tape and bonding method

Silicone pressure sensitive adhesive compositions which cure in the presence of moisture comprise an adhesive component which bears alkoxy radical-containing curing radicals, a catalyst to accelerate the reaction of moisture with the alkoxy radicals to form siloxane bonds and a multialkoxy silicon compound to stabilize the composition in the solventless state. Curing provides adhesives ranging from pressure sensitive adhesives having improved properties to permanent adhesives. The adhesives are useful for adhering an object to a surface and thereafter improving the bond between the object and the surface by exposure to moisture.

Stable, moisture-curable silicone pressure sensitive adhesives

The degree and reproducibility of cohesive bonding between gum-type organosiloxane elastomers cured by a platinum-catalyzed hydrosilation reaction and organic polymer substrates are increased when the composition used to prepare the elastomer contains an amount of silanol-functional polydiorganosiloxane sufficient to impart an activity number of at least 40 to the polydiorganosiloxane gums present in said composition.

Optically clear composites comprising two layer of organic polymers and

The degree and reproducibility of cohesive bonding between gum-type organosiloxane elastomers cured by a platinum-catalyzed hydrosilation reaction and organic polymer substrates are increased when the composition used to prepare the elastomer contains an amount of silanol-functional polydirganosiloxane sufficient to impart an activity number of at least 40 to the polydiorganousiloxane gums present in said composition.

Clear organosiloxane compositions

Liquid organosiloxane compositions that cure by a hydrosilylation reaction and contain from 0.1 to about 2 weight percent of a low molecular weight polymethylvinylsiloxane cure to form adhesives that are sufficiently flexible to retain cohesive bonding between substrates exhibiting different coefficients of thermal expansion when the resulting composite is exposed to variations in temperatures during use. The flexibility of the cured adhesive is further increased by addition to the curable compositions of a liquid polydimethylsiloxane having a silanol group at one of the two terminal positions and a triorganosiloxy group at the second terminal position. Preferred compositions are packaged in at least two parts, with the organohydrogensiloxane and the hydrosilylation catalyst being located in different parts of said composition.

Optically clear organosiloxane adhesive compositions

Improved primer compositions comprise (A) at least one member of a specified group of ethylenically unsaturated organosilicon compounds containing silicon-bonded alkoxy groups, (B) silicone/organic copolymers prepared from esters of ethylenically unsaturated organic acids and organosilicon compounds derived from these acids, (C) organohydrogensiloxane curing agents and (D) a solvent. The improvement resides in the presence in the solvent of an ethylenically unsaturated alcohol containing from 4 to 6 carbon atoms. The alcohol constitutes at least 50 percent by weight of the solvent.

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Freeland, MI, United States of America

Joseph Norbert Clark