Abstract:
Anionic silanes of the formula ##EQU1## are made by reacting silanes of the formula (RO).sub.3 SiR'(NHCH.sub.2 CH.sub.2).sub.n NHCH.sub.2 ##EQU2## with 1 or 2 moles of an anhydride of a 1,2-dicarboxylic acid. A typical compound is ##EQU3## these compounds are used as coupling agents between inorganic substrates and organic resins such as epoxides, phenolic and polyester.
Abstract:
A water repellent composition for treating surfaces which is an aqueous solution of a water soluble silane coupling agent and an alkyltrialkoxysilane. The alkyltrialkoxysilane is either an alkyltrialkoxysilanes with C.sub.1 to C.sub.6 alkyl groups on silicon or a blend of alkyltrialkoxysilanes each with C.sub.1 to C.sub.6 alkyl groups on silicon. A treatmetn method for wood and masonry is disclosed.
Abstract:
Silyl-functional fumarates are formed through the reaction of a methyl ester of a maleate with a chloroalkyl silane or disiloxane in the presence of an amine or phosphine catalyst. These materials are useful as adhesion promoters for polyolefins.
Abstract:
A novel organosilane coupling agent is disclosed and its use as an adhesion promoter in mineral-filled unsaturated polymer systems is described. Additionally, use of the organosilane as a primer for various substrates is presented. The coupling agent comprises the reaction product of an isocyanatoalkyl ester of acrylic or methacrylic acid with an aminoorganosilane. The organosilane so formed links the acryloxyalkyl or methacryloxyalkyl functionality to an alkylene, or aminoalkylene, group on the silicon atom through a urea group. Use of the organosilane as a coupling agent in a mineral-filled unsaturated polymer results in superior resistance to moisture, particularly when the polymer is selected from the group of corrosion resistant unsaturated polyesters.
Abstract:
A method for stabilizing an unsaturated organosilicone is disclosed wherein a stabilizing amount of a hydroxylamine compound is added to the organosilicone to prevent thermal polymerization of the latter. The organosilicone may be an alkoxysilane or an organopolysiloxane having in its molecule a reactive organic group bearing at least one radical selected from acryloxy, methacryloxy, acrylamide, methacrylamide, styryl or vinylbenzyl radicals. The hydroxylamine compound may be added either to the organosilicone or during the preparation of the alkoxysilane from its respective reactants.
Abstract:
The present invention relates to water-born emulsion adhesives based on polymers or copolymers of vinyl acetate and having uniformly dispersed therein an adhesion promoter consisting essentially of an alkoxysilane and up to about 80% by weight of a plasticizer for the poly(vinyl acetate). The alkoxysilane useful herein may be selected from ##STR1## in which R is independently selected from alkyl or alkoxyalkyl radicals having 1-4 carbon atoms. The modified adhesives have improved bond strength to wood, particularly after exposure to moisture.
Abstract:
A coupling agent composition comprised of the reaction product of (a) about two mole parts of maleic anhydride with (b) about one mole part of a diamine functional silane compound of the general formula ##STR1## where R denotes an alkyl radical, R' denotes an alkyl radical, R" and R'" denote alkylene radicals and x is 0 or 1; and (c) sufficient solvent to solubilize (a) and (b).
Abstract:
A novel organosilane coupling agent is disclosed and its use as an adhesion promoter in mineral-filled unsaturated polymer systems is described. Additionally, use of the organosilane as a primer for various substrates is presented. The coupling agent comprises the reaction product of an isocyanatoalkyl ester of acrylic or methacrylic acid with an aminoorganosilane. The organosilane so formed links the acryloxyalkyl or methacryloxyalkyl functionality to an alkylene, or aminoalkylene, group on the silicon atom through a urea group. Use of the organosilane as a coupling agent in a mineral-filled unsaturated polymer results in superior resistance to moisture, particularly when the polymer is selected from the group of corrosion resistant unsaturated polyesters.
Abstract:
Alkali siliconates of silylorganosulfonates are capable of stabilizing solutions of water soluble silicates and enhancing their usefulness as corrosion inhibitors for metals that come in contact with aqueous, alcoholic or aqueous-alcoholic solutions. The disclosed alkali siliconates of silylorganosulfonates are also useful stabilizers for aqueous silicates in such applications as treating boiler water, geothermal water and cooling coil water. Methods of using the alkali siliconates of silylorganosulfonates to provide corrosion inhibiting antifreeze and coolant solutions are disclosed.
Abstract:
What is disclosed is a novel method of preparing silylalkyl esters of phosphorus using amines or phosphines, which are capable of forming onium compounds with the reactants, as catalysts. They are useful as flame retardant additives and lubricants on metals and textiles.