Abstract:
A novel primer composition containing an aminoalkyl-substituted trialkoxysilane, a solvent, a carboxylic acid salt of tin and, optionally, an amine-containing organic compound, is applied to a cured silicone substrate and dried to improve the adhesion of a subsequently applied coating. The composition and method are of particular value for painting an elastomeric coating filled with an iron filler.
Abstract:
A composition which is curable to an elastomer comprising:A polymer or mixture of polymers of the formula ##STR1## wherein: X are monovalent moieties having ethylenic unsaturation which can be the same or different;Y are divalent linking groups which can be the same or different;m is an integer of 0 to 1;D are monovalent moieties which can be the same or different selected from the group consisting of hydrogen, an alkyl group of 1 to about 10 carbon atoms, aryl, and substituted aryl;R are divalent hydrocarbon groups which can be the same or different;R.sup.1 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl;R.sup.2 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl;R.sup.3 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, vinyl, aryl, and substituted aryl;R.sup.4 are monovalent moieties which can be the same or different selenited from the group consisting of alkyl, substituted alkyl, vinyl, aryl, and substituted aryl; andn is an integer of about 270 to about 1000.A composition which is curable to a pressure sensitive adhesive comprising the above polymer and a sufficient amount of tackifier. The invention also relates to fluorosilane compounds useful in the preparation of silicone macromonomer, their preparation and the preparation of silicone macromonomer.
Abstract:
The invention provides a silicone composition which is rapidly, completely, and reliably radiation curable to an elastomer comprising an organopolysiloxane polymer having terminal groups which contain ethylenic unsaturation and in addition possess both hydrogen bond donor and acceptor capabilities. The invention also provides a composition which is curable to a pressure sensitive adhesive comprising the above polymer and a sufficient amount of tackifier. The invention also relates to silicone macromonomers additives for varying the properties of the composition. The invention further relates to fluorosilane compounds useful in the preparation of silicone macromonomers, their preparation and the preparation of silicone macromonomers.
Abstract:
Disclosed is a curable silicone composition comprising: (A) an organopolysiloxane having a silicon-bonded unsaturated aliphatic radical; (B) an organopolysiloxane having a silicon-bonded mercaptoalkyl radical; and (C) a photoreaction-initiating amount of photoreaction initiator. The photoreaction initiator includes arylcarbonyl phosphine oxide compounds, having a radical selected from the group consisting of substituted and unsubstituted aryl radicals, and another two radicals selected from the group consisting of substituted and unsubstituted monovalent hydrocarbon radicals. The above silicone, composition is efficiently cured by visible light radiation and usable for photo-curable adhesives.
Abstract:
THERE IS DESCRIBED HEREIN SILYL ACYL PEROXY COMPOUNDS CONTAINING AT LEAST ONE OF THE FOLLOWING STRUCTURES;
(Z(3-X)-SI(-O(X/2))(-R'')-(NH)Y-COO)Z-(O-R")(2-Z)
WHEREIN: R'' IS A DIVALENT HYDROCARBON SUCH AS ALKYLENE OR ARALKYLENE; R" IS ALKYL OR ARALKYL; Z IS ONE OR MORE OF A MONOVALENT HYDROLYZABLE RADICAL OR MONOVALENT ORGANIC RADICAL BONDED TO SI BY A CARBON TO SILICON BOND; X IS AN INTEGER FROM 0 TO 3 INCLUSIVE; WHEN X IS GREATER THAN 0 THE OXYGEN IS BONDED TO ANOTHER SILICON ATOM WHEREBY TO FORM A SILOXANE; Y IS 0 OR 1; Z IS 1 OR 2; AND PROVIDED THAT WHEN Y IS O, THE ACYL CARBONYL CARBON ATOM IS BONDED TO A CARBON ATOM OF R''; THE R'' HAVING AT LEAST TWO SEQUENTIAL CARBON ATOMS SEPARATING THE ACYL CARBONYL CARBON FROM THE SILICON; AND FURTHER PROVIDED THAT WHEN Y IS 1, Z IS 1 AND THE NITROGEN ATOM IS BONDED TO A CARBON ATOM OF R'', THE R'' HAVING AT LEAST 3 SEQUENTIAL CARBON ATOMS SEPARATING THE NITROGEN FROM THE SILICON. THESE COMPOUNDS ARE USEFUL AS COUPLING AGENTS AND BINDERS FOR POLYMER, RUBBER, SILICEOUS, METAL OXIDE AND METALLIC SUBSTRATES.
Abstract:
Provided is an organopolysiloxane compound serving as a raw material of an organopolysiloxane pressure-sensitive adhesive which has necessary and sufficient pressure-sensitive adhesive strength in a step such as temporary fixing or the like and can be easily peeled off from a substrate in a subsequent step; an organopolysiloxane pressure-sensitive adhesive composition containing the same; and a method for using the same. A chain co-modified organopolysiloxane containing a specific functional group having a (meth)acryl group (RA) and a functional group having an alcoholic hydroxyl group (ROH), wherein the amount of RA is in the range of 0.10 to 10.0 mol % with regard to all silicon atom-bonded functional groups in the molecule, and the average amount of ROH is in a range of 0.1 to 1.0 moles per mole of RA.
Abstract:
A one-part low modulus room temperature vulcamsable (RTV) silicone composition comprising a titanate and/or zirconate catalyst which cures to a low modulus silicone elastomer which has a good adhesion profile and may be used as a non-staining (clean) sealant having high movement capability which compositions contains an aminosilane adhesion promoter having two hydroxyl or hydrolysable groups per molecule in an amount of 0.1-3.75% by weight of the composition.
Abstract:
Method comprising the following steps: i) manufacturing components on a face of a substrate fastened to a first temporary substrate, ii) fastening a second temporary substrate onto the substrate, iii) removing the first temporary substrate, iv) manufacturing components on another face of the substrate, the first and second temporary substrates having surface areas greater than the surface area of the substrate of interest, during step ii), an adhesive film is disposed between the substrate and the first temporary substrate or between the substrate and the second temporary substrate, the adhesive film forming a lateral band around the substrate and adhering to the temporary substrates, the adhesion energy E1 between the substrate of interest and the first temporary substrate being greater than the adhesion energy E2 between the substrate of interest and the second temporary substrate, the adhesion energy E31 between the first temporary substrate and the adhesive film being lower than the adhesion energy E32 between the second temporary substrate and the adhesive film.
Abstract:
The present invention provides a bio-electrode composition including a silicone bonded to a sulfonamide salt, wherein the sulfonamide salt is shown by the following general formula (1): wherein R1 represents a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms optionally having an aromatic group, an ether group, or an ester group, or an arylene group having 6 to 10 carbon atoms; Rf represents a linear, branched, or cyclic alkyl group having 1 to 4 carbon atoms and containing at least one fluorine atom; M+ is an ion selected from a lithium ion, a sodium ion, a potassium ion, and a silver ion. This can form a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, light-weight, manufacturable at low cost, and free from large lowering of the electric conductivity even though it is wetted with water or dried.