Abstract:
Self-lubricated epoxy resins are obtained by molding and curing liquid polyepoxides containing diorganopolysiloxanes dispersed therein, uniform dispersions being formed with the aid of certain polydimethyl-siloxane-organic copolymers.
Abstract:
A PROCESS IS DISCLOSED FOR PREPARING A FOAM WHICH COMPRISES ADDING AT LEAST 0.1% BY WEIGHT OF A COPOLYMER CONSISTING ESSENTIALLY OF SIO2 UNITS AND UNITS SELECTED FROM THE GROUP CONSISTING OF
(CH3)3SIO1/2 AND Q(CH3)2CIO1/2
UNITS, WHEREIN Q IS A RADICAL CONTAINING A SOLUBILIZING GROUP THAT MAKES THE COPOLYMER COMPATIBLE WITH THE MATERIAL TO WHICH IT IS ADDED, AND THE RATIO OF SIO2 UNITS TO THE TOTAL (CH3SI AND Q(CH3)2SI UNITS IS IN THE RANGE OF 1:0.6 TO 1:2, TO AN ORGANIC LIQUID HAVING A SURFACE TENSION OF AT LEAST 22.2 DYNES PER CENTIMETER AT 20*C. WHEN IN CONTACT WITH AIR, AND THEN EXPANDING SAID LIQUID WITH A GAS.
THE SURFACE CHARACTERISTICS OF VINYLIC POLYMERS ARE ALTERED BY THE APPLICATION OF AN ORGANOSILICON COMPOUND CONTAINING AT LEAST ONE HSR''SI-MOIETY, WHERE R'' IS A DIVALENT HYDROCARBON RADICAL FREE OF ALIPHATIC UNSATURATION, FOLLOWED BY APPLICATION OF ENERGY. ALTERNATIVELY, THE ORGANOSILICON COMPOUND CAN BE ADDED TO THE MOLTEN VINYLIC POLYMER AND THIS COMPOSITION IS FURTHER PROCESSEC, FOR EXAMPLE, BY EXTRUDING INTO FIBERS. EXEMPLARY IS AN ACRYLONITRILE BUTADIEN STYRENE SURFACE WHICH HAS BEEN TREATED WITH
Abstract:
The present invention relates to an antifoaming preparation for aqueous systems consisting essentially of a water insoluble organic liquid, e.g., mineral oil; a filler; a hydroxyl endblocked organopolysiloxane or a benzene soluble organopolysiloxane resin; and an ingredient, e.g., KOH, a hydrocarbon amine, ammonia, or hexamethyldisilazane which would lend compatibility between the filler and the silicone fluid or silicone resin component. The preparations in question would be particularly useful in the pulp and paper industry.
Abstract:
PAPER IS DISCLOSED WHICH IS COATED ON ONE SIDE WITH A COMBINATION OF (A) A CURED, OPEN-CELLED, FOAM COMPOSITION COMPRISING (1) A PLASTISOL AND (2) A COPOLYMER OF SIO2 UNITS AND UNITS SELECTED FROM THE GROUP CONSISTING OF (CH3)SIO1/2 AND Q(CH3)SIO1/2 UNITS, WHEREIN Q IS A RADICAL CONTAINING A SOLUBILIZING GROUP THAT MAKES THE COPOLYMER COMPATIBLE WITH THE PLASTISOL, AND THE RATIO OF SIO2 UNITS TO THE TOTAL (CH2)SI AND Q(CH3)2SI UNITS IS IN THE RANGE OF 1:06 TO 1:1.2, AND (B) AN ESSENTIALLY COLORLESS MATERIAL CAPABLE OF REACTING UPON CONTACT WITH A SECOND ESSENTIALLY COLORLESS MATERIAL TO PRODUCE A COLORED IMAGE, THE OTHER SIDE OF THE PAPER CONTAINING SAID SECOND ESSENTIALLY COLORLESS MATERIAL.