摘要:
Ionically cross-linked silicone polymers of a thickened gel-like consistency are made by reacting a diamino containing polysiloxane with an acid containing reactant selected from itaconic acid or the ester derivative thereof; substituted or unsubstituted cyclic and ankydride; substituted or unsubstituted conjugated olefinic acid or mixtures of the same at an elevated temperature in the presence of a low molecular weight silicone oil or other solvent until an ionically cross-linked zwitterionic siloxane polymer of a gel-like consistency is formed.
摘要:
A polysiloxane composition including an amphoteric class of organosilicone composition is provided having the formula: ##STR1## wherein: R is selected from R.sub.2 or --OR.sub.9, wherein R.sub.9 is hydrogen or alkyl;R.sub.1, which can be the same or different, is selected from R.sub.2, a diamine containing group of the formula --F.sub.1 --NR.sub.9 --F--NH.sub.2, and at least one pyrrolidone-containing functional carboxyl group of the general formula: ##STR2## wherein R.sub.5 is hydrogen, lower alkyl (C.sub.1-6) or alkali metal; F.sub.1 is linear or branched alkylene; F is linear or branched alkylene; B is --NR.sub.7, wherein R.sub.7 is hydrogen or a dicarboxylic group;R.sub.2 is selected from alkyl, aryl or olefinic;R.sub.3 and R.sub.4, which may be the same or different are selected from alkyl, aryl, capped or uncapped polyoxyalkylene, alkaryl, aralkylene or alkenyl;a is an integer from 0 to 50,000; andb is an integer from 0 to 100;
摘要:
A method is provided for preparing silicone-containing compositions represented by the formula: ##STR1## wherein: R is a organosilicone chain represented by the formula: ##STR2## wherein: R.sub.5, which can be the same or different, is selected from R.sub.6, at least one group of the --(CH.sub.2).sub.n1 --B.sub.n2 --(CH.sub.2).sub.n3 -- and mixtures thereof:R.sub.6 is selected from alkyl, aryl and olefin;R.sub.7 and R.sub.8, are selected from alkyl, aryl, polyoxyalkylene, alkaryl, aralkylene, and alkenyl;R.sub.1 is of the group consisting of hydrogen and lower alkyl;R.sub.2 is hydrogen or an alkylene hydrocarbon group; andR.sub.3 is selected from --OH, --NH.sub.2, --R.sub.9 CONH--R.sub.9 COO and --H, wherein R.sub.9 is alkyl having from 1 to 22 carbon atoms.Wherein an organosilicone fluid having at least one carboxyl-functional group is reacted with a substituted or unsubstituted alkyl ethylene diamine compound at an elevated temperature for a time necessary to react the carboxyl functional group and provide for the cyclization of the reaction product.
摘要:
A silicone-containing phospholipid composition is provided having the general formula: ##STR1## wherein: A can be H, M or R--Y--; A, can be H, OH, OM or R--Y--O; A.sub.1 is selected from H, OH, OM or R--Y--O--; M is a cation; Y is alkylene or substantially alkylene; x is 0 or an integer from 1-5; and R is a quaternized organosilicone amidoamine reactant moiety of the formula: ##STR2## wherein: R.sub.10 is the silicone backbone chain to which at least one pyrrolidone containing amidoamine functional group is attached;R.sub.6 is hydrogen, alkyl, hydroxyalkyl, alkenyl cycloalkyl or polyoxyalkylene;R.sub.7 and R.sub.8 are selected from alkyl, hydroxyalkyl, carboxyalkyl and polyoxyalkylene;F is linear or branched alkylene; X.sup.- is an anion; n is 0 or 2; n.sup.1 is 0 or 1; n.sup.2 is 0 or 1; n.sup.3 is an integer from 2 to 12. B is --NR.sub.11 sulfur or oxygen, wherein R11 is hydrogen or lower alkyl; with the proviso that when n.sup.1 is 0 and n.sup.2 is 1, n.sup.1 is 1, when n is 2 and n.sup.2 is 1, n.sup.1 is 0 or 1 and when n is 2 and n.sup.2 is 0, n.sup.1 is 0; and; d is one or greater.
摘要:
Described herein are amide and/or imide containing polymers based on novel monomers that contain isoalkylidene bridges. These polymers have excellent toughness combined with high temperature stability, low water absorption, and good melt-fabricability.
摘要:
Heat-resistant, polyorganosiloxane elastomers are prepared by reacting a linear, difunctional polyorganosiloxane with a silicon-containing crosslinking agent and a stannous salt of a monoethylenically unsaturated monohydroxy monocarboxylic acid as the curing catalyst. A filler can optionally be included in the formulation. The present catalysts are unique in that they impart a relatively long working life to the uncured composition yet do not catalyze the depolymerization reaction at elevated temperatures as do conventional organotin catalysts such as dibutyltin dilaurate.
摘要:
Organofunctional-silicon hydrides having, in addition, a halo substituent are provided. These compounds, of generic formula: QSiYY'H, (1) where Q is an organofunctional alkyl radical, Y is a halide radical, and Y' is Y or a monovalent hydrocarbon radical free of aliphatic unsaturation, are useful as intermediates in the production of various bis-(organofunctional-alkyl)silanes. Additionally, they are useful as waterproofing agents for various materials.
摘要:
A copolymer which is the reaction product of a tetracarboxylic acid dianhydride, and organic diamine and a di(aminoalkyl) poly siloxane where the di(aminoalkyl) poly siloxane constitutes 18-45 mole percent of the total amine requirement of the polymer and is applicable as a conformal protective coating for electronic devices.
摘要:
This disclosure relates to novel silicone compounds containing alkenyl thio functional groups and their method of preparation. These compounds are useful as adhesion promoters for self-adhering silicone rubbers capable of bonding to inorganic substrates especially metals. The silicone rubber-metal composites have particular applications in semiconductor devices and in ignition systems for automobiles.