Abstract:
Organosilicone polymers are provided containing siliconcontaining units A, B and C, where A is SiO4/2, B is a monofunctional siloxy unit in which silicon is bonded to at least one organic moiety bearing an organic-capped poly(oxyalkylene) chain, and C is a monofunctional trihydrocarbylsiloxy unit, and in which there are from about 0.75 to about 2 moles of A, and from about 0.1 to about 1 mole of C, per mole of B. The polymers are useful as surfactants and find particular application in the manufacture of flexible polyester urethane cellular products, including flame-retarded foams.
Abstract:
Organosilicone polymers are provided which comprise polysiloxane-polyoxyalkylene block copolymers wherein the polysiloxane blocks are trialkylsiloxy-endblocked and contain reoccurring difunctional dialkylsiloxy monomeric units in combination with reoccurring difunctional cyanoalkyl-alkylsiloxy or cyanoalkoxyalkylsiloxy monomeric units, the mol ratio of the dialkylsiloxy units to the cyano-substituted siloxy units being about 10-200:3-100, and wherein the polysiloxane and polyoxyalkylene blocks are joined through an Si-C or an Si-O-C linkage, and from about 20 to about 65 weight per cent of the oxyalkylene units of the polyoxyalkylene blocks are constituted of oxyethylene units. The block copolymers of the invention are effective stabilizers of flexible polyether polyolbased polyurethane foams and offer particular advantage in the formation of flame-retarded foams. Also provided is a particular class of cyano-substituted polyalkylsiloxane hydrides which are useful in the preparation of the aforesaid block copolymers.
Abstract:
LINEAR SILOXANE-POLYOXYALKYLENE (AB)N BLOCK COPOLYMERS HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 30,000, COMPOSITIONS OF POLYURETHANE-FORMING FROTHS CONTAINING SAID COPOLYMERS, THE CURABLE FROTHS PRODUCED FROM SAID COMPOSITIONS, METHODS FOR UTILIZING SAID FROTHS AS WELL AS THE CURED FOAMS AND ARTICLES PRODUCED THEREFROM, SAID FROTHS HAVING UTILITY IN THE PRODUCTION OF MOLDED POLYURETHANE FOAM ARTICLES, FOAM BACKINGS FOR CARPETING AND FABRICS, COATINGS FOR WIRE, CABLE AND OTHER ARTICLES, SMALL CAVITY ENCAPSULATIONS, AND THE LIKE.
Abstract:
QUATERNARY AMMONIUM SALTS OF CHLOROMETHYLATE SILANES OR SILOXANES WHICH CONTAINS AT LEAST ONE
(CL-R3"N+CH2-AR-(R$N)
RADICAL DIRECTLY LINKED TO A SILICON ATOM WHEREIN AR IS AN ARYLENE RADICAL, WHEREIN R"2N TAKEN COLLECTIVELY IS A TERTIARY AMINE RADICAL AND WHEREIN THE COMPOUNDS ARE USEFUL IN CONVENTIONAL SILICON APPLICATON SUCH AS ANTISTATIC AGENTS, WETTING AGENTS LUBRICANTS, HYDRAULIC FLUIDS COATING RESINS, ELASTOMERS AND CATIONIC SURFACTANTS.
Abstract:
THE PRODUCTION OF FLEXIBLE POLYESTER URETHANE FOAMS USING AS STABLILZING AGENTS CATIONIC SILICONE SURFACTANTS HAVING THE FORMULA:
MDXM
WHEREIN M IS THE TRIMETHYLSILOXY UNIT, ME3SIO1/2, X IS AN INTEGER OF 1 TO 3 AND D IS A CATIONIC DIFUNCTIONAL SILOXY UNIT OF THE FORMULA:
X-(R3NR*SI(ME)O)
WHEREIN R* IS A DIVALENT ORGANIC HAVING 2 TO 18 CARBON ATOMS AND SELECTED FROMTHE CLASS CONSISTING OF DIVALENT HYDROCARBON GROUPS, HYDROXY-SUBSTITUTED DIVALENT HYDROCARBON GROUPS AND -R"OR"- GROUPS WHEREIN R" IS SELECTED FROM THE CLASS CONSISTING OF DIVALENT HYDROCARBON GROUPS AND HYDROXY-SUBSTITUTED DIVALENT HYDROCARBON GROUPS AND MAY BE THE SAME OR DIFFERRENT IN EACH OCCURRENCE; R IS SELECTED FROMTHE CLASS CONSISTING OF A MONOVALENT HYDROCARBON GROUP WHEN TAKEN INDIVDUALLY, AND, WHEN TWO R GROUPS ARE TAKEN TOGETHER WITH N OF SAID FORMULA, A DIVALENT GROUP CONTAINING A FIVE TO SIX MEMBER HETEROCYCLIC RING IN WHICH N IS BONDED TO THE REMAINING R GROUP AND SAID R* GROUP WHICH IS SELECTED FROM THE CLASS CONSISTING OF HYDROXY-SUBSTITUTED DIVALENT HYDROCARBON GROUPS AND SAID-R"OR"-GROUPS; AND X IS AN INORGANIC ANION. THE CATIONIC SILICONE SURFACTANTS PERMIT THE PRODUCTION OF FLEXIBLE POLYESTER URETHANE FOAMS HAVING FINE, UNIFORM CELL STRUCTURE, LOW COMPRESSION SET AND FREEDOM FROM LARGE VOIDS AND SPLITS.
Abstract:
1,198,096. Polysiloxane sulphonates; emulsions. UNION CARBIDE CORP. 14 July, 1967 [18 July, 1966], No. 32511/67. Heading C3T. [Also in Divisions B1 and C5] Polysiloxane sulphonates contain 0À1-100 mol. per cent of units and 0À0-99À9 mol per cent of units R b 11 SiO 3 wherein M is a mono-, di-, tri- or tetravalent cation, R 1 is an alkyl, cycloalkyl, aryl, aralkyl, alkaryl, alkenyl or cyoloalkenyl group, optionally halo-, alkoxy-, aryloxy-, or cyano-substituted, R is an alkylene, cycloalkylene, alkyleneoxyalkylene or cycloalkyleneoxyalkylene group having an OH group vicinal to the -SO 3 - group, R 11 is H or as R 1 above, a is 0, 1 or 2, x is 1, 2, 3 or 4, the valency of M, and b is 1, 2 or 3. The polysiloxanes in which M is mono- or divalent may be prepared by reaction of the corresponding epoxy polysiloxanes with the bisulphite of the required cation in the presence of a catalytic amount of a sulphite; from these, polysiloxanes with other values of M may be prepared by ion exchange, e.g. with the chloride of the desired metal. The examples illustrate the reaction of a polysiloxane wherein y=0-10 and z=1-7 with z mols. of allyl glycidyl ether, then with NaHSO 3 and Na 2 SO 3 ; in Example 1 the reactions proceed according to the following equations: The products are surfactants:-they may be mixed with the sodium sulphate of 3: 9-diethyltridecanol-6 and naphtha, optionally in aqueous emulsion, to give a wood or metal cleaning liquid; with oleic acid, ethanolamine, NaNO 2 and naphtha, optionally in aqueous emulsion, to give a dry-cleaning liquid; and with carnauba wax, oleic acid, triethanolamine, borax and water, to give a polish emulsion.