Abstract: A polymer bearing specific cyclic silicon-containing groups is novel. A resist composition comprising the polymer as a base resin is sensitive to high-energy radiation and has excellent sensitivity and resolution at a wavelength of less than 300 nm, and high resistance to oxygen plasma etching. The resist composition lends itself to micropatterning for the fabrication of VLSIs.

Abstract: The present invention relates to surface-modified fillers obtained by mixing a filler with water, adding an water-based organosiloxane composition with very thorough mixing, wherein the organosiloxanes are soluble in water and contain, in addition to OH groups, at least one amino-functional group and optionally a functional group from the series consisting of alkyl, haloalkyl, alkenyl, glycidyl ether alkyl, acryloxyalkyl and methacryloxyalkyl, and wherein a functional group is bonded to each silicon atom of the organosiloxane, and drying the mixture. The present invention also provides a process for the surface modification of fillers, their use and ethylene-vinyl acetate copolymer compositions which include the surface-modified fillers.

Abstract: A shelf-stable water-borne dispersion or solution that cures rapidly and at low temperatures when coated onto a substrate can be prepared with an aqueous-based solution or stable aqueous dispersion of a polymer having a backbone containing pendant silanol groups which are sufficiently neutralized to inhibit silanol condensation.

Abstract: A polymer composition comprises a polymer matrix and a siloxane-containing additive which is substantially incompatible with the polymer matrix, wherein the siloxane of the additive has a hydroxy, alkoxy or epoxy functionality, and a functionality which is capable of bonding with a silicone elastomer-forming composition which is curable by a hydrosilylation reaction. The polymer matrix preferably comprises polyphenylenesulphide, and the additive preferably comprises hydroxy-terminated methylvinyl siloxane. The composition is capable of forming plastics articles to which cured silicone elastomers can adhere.

Abstract: Curable compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The curable compositions are useful as both ambient-cured and thermally-cured coating compositions which provide such properties as excellent appearance, mar resistance, acid etch resistance, adhesion, pot life, improved tack time, mar resistance and corrosion resistance.

Abstract: A method for preparaing of an organofunctional organopentasiloxane which finds utility as a modifier for organic resins is disclosed, said method comprising:(I) reacting(A) a cyclotrisiloxane and(B) an .alpha.,.omega.-dihydrogendiorganodisiloxane in the presence of an(C) acid catalystto prepare an .alpha.,.omega.-dihydrogendiorganopentasiloxane having the formulaR.sub.2 HSiO(R.sub.2 SiO).sub.3 SiHR.sub.2wherein R independently represents a monovalent group free of aliphatic unsaturation selected from hydrocarbon or halogenated hydrocarbon groups; and(II) running an addition reaction in the presence of (D) a hydrosilylation catalyst between said .alpha.,.omega.-dihydrogendiorganopentasiloxane and (E) an organic compound containing a monovalent group selected from epoxy or phenol groups as well as an unsaturated aliphatic hydrocarbon group. In a variation of the method, the .alpha.,.omega.

Abstract: An emulsion polymer is disclosed by the present invention. In particular, the emulsion polymer comprises a protective colloid and a functionalized silane component which is of the formula: ##STR1## wherein R" is C.sub.1 -C.sub.5 alkyl, R' is C.sub.1 -C.sub.5 alkyl, R is SH, CH.sub.2 .dbd.CH--, CH.sub.2 .dbd.C(CH.sub.3)--C(O)O--, CH.sub.2 .dbd.CH--C(O)O--, and ##STR2## n is 1-10, and m is 2 or 3.

Abstract: A method of making .beta.-diketo functional silanes and siloxanes in which the acetoacetic ester moiety, i.e., .beta.-diketo CH.sub.3 COCH.sub.2 CO--, is attached to the oxygen or nitrogen atoms of C--OH or C--NH.sub.2 containing functional silanes or siloxanes, by reacting the organosilicon nucleophile with diketene, as illustrated below for the C--OH containing functional silane. ##STR1## The products can be formed into curable compositions, or used as additives in durable textile treatments, polyurethane foams, and hair care applications.

Abstract: A composition relating to an oligomeric alkoxy siloxane substituted with polymerizible epoxy or 1-alkenyl groups, and a process for the production of that composition, are disclosed. The process entails a hydrolysis-condensation oligomerization of an epoxy- or 1-alkenyl ether-functional trialkoxy silane, catalyzed by an ion exchange resin, and separation of the resin from the resulting oligomer.

Abstract: A 1-acyloxy-organotetrasiloxane represented by the general formula: ##STR1## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, and a process for producing the above mentioned 1-acyloxy-organotetrasiloxane, which is characterized by subjecting hexamethylcyclotrisiloxane to a ring-opening reaction with an acyloxysilane represented by the general formula: ##STR2## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, in the presence of an acidic catalyst.

Abstract: A primer for promoting adhesion between an elastomeric adhesive and a nonporous substrate containing a silane-modified saturated polyester polymer and an adhesion promoter in an anhydrous solvent. The invention is also directed to a silane-modified saturated polyester polymer, and an adhesion promoter made by the reaction of a multifunctional isocyanate and an organosilane.

Abstract: Curable compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The curable compositions are useful as both ambient-cured and thermally-cured coating compositions which provide such properties as excellent appearance, mar resistance, acid etch resistance, adhesion, pot life, improved tack time, mar resistance and corrosion resistance.

Abstract: Curable compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The curable compositions are useful as both ambient-cured and thermally-cured coating compositions which provide such properties as excellent appearance, mar resistance, acid etch resistance, adhesion, pot life, improved tack time, mar resistance and corrosion resistance.

Abstract: A liquid curable resin composition containing:(A) a polyfunctional (meth)acrylic compound having at least three (meth)acryloyl groups in a molecule;(B) a reaction product obtained by the reacting (i) an alkoxysilane compound having a polymerizable unsaturated group, a urethane bonding group and an organic group represented by the formula (1), ##STR1## and (ii) silica particles; (C) a silicone polymer; and(D) an irradiation sensitive initiator.The composition when coated on surfaces of plastic molded articles and other materials provides for superior slip characteristics and resistance to abrasions, stains, weather, solvents and alkali environments. The composition of the instant invention is particularly suitable as a hard coat material for plastic optical components, touch panels, film-type liquid crystal elements, molded plastic articles or as a stain-proof or scratch-proof coating for wall and flooring materials which are used as architectural interior finishings.

Abstract: A primer for promoting adhesion between an elastomeric adhesive and a nonporous substrate containing a silane-modified saturated polyester polymer and an adhesion promoter in an anhydrous solvent. The invention is also directed to a silane-modified saturated polyester polymer, and an adhesion promoter made by the reaction of a multifunctional isocyanate and an organosilane.

Abstract: Certain members of the class of N-silylalkyl-aspartic acid esters, when used to endcap polyurethane polymers, offer moisture curable, one-part sealant formulations having significantly improved physical property improvements over other members of the same class of organofunctional silanes. More specifically, polyurethane polymers terminated with either the dibutyl or diethyl maleate/primary aminoalkyl silane addition product offer sealants which substantially outperform comparative sealants obtained using polymers endcapped with other olefinic carboxylate ester (dimethyl maleate, dimethyl crotonate) or nitrile (acrylonitrile)/primary aminoalkyl silane addition products. Additionally, sealant formulations incorporating the dibutyl or diethyl maleate/primary aminoalkyl silane terminated polymers demonstrate unexpected improvements in both elongation and tensile strength performance. The dibutyl maleate and dimethyl maleate based polymers give significant increase in tear resistance.

Abstract: A method of hydrolyzing an alkoxysilane which comprises adding sufficient water to hydrolyze at least one alkoxy group, optionally, in the presence of acidic or basic catalysts.

Abstract: Gels, cast films, coatings, extruded rods, extruded fibers, compression molded discs, and machined compression molded discs, are made from organopolysiloxane sheet or tube polymers such as an apophyllite-derived 3-cyanopropyldimethyl siloxy sheet polymer of the formula [((NCC.sub.3 H.sub.6)(CH.sub.3).sub.2 SiO).sub.x (HO).sub.1-x SiO.sub.1.5 ].sub.n. Polymers are prepared by contacting sheet or tube silicates with an organohalosilane containing at least one polar group such as cyanoalkyl, acyloxy, or haloalkyl, in the presence of a polar solvent or a mixture of a polar solvent and a non-polar solvent; and heating the mixture until a polymer is formed.

Abstract: This invention relates to organosilicon compositions useful as adhesion promoters for curable organopolysiloxanes, said organosilicon compositions being formed by reacting (A) a polyhydric alcohol, (B) an organosiloxane containing at least one organofunctional group and one hydroxyl or hydrolyzable group per molecule and (C) a silane containing at least three hydrolyzable groups per molecule.

Abstract: Organosiloxane compounds bearing nitrogen-containing heterocycles, in which the heterocycles are bonded to a silicon atom via divalent radicals containing a unit of the general formula (I) ##STR1## in which E is one of the radicals --O--, --S--, --NR.sup.1 -- or --N.dbd., where R and R.sup.1 are each a C.sub.1 - to C.sub.20 -hydrocarbon radical which is optionally substituted by halogen, amine, ammonium or mercapto groups and may optionally be interrupted by groups chosen from --C(O)--, --C(O)--O--, --C(O)--NR.sup.3 --, --NR.sup.3 --, --O--, --S--, and--N.dbd. is a constituent of a heterocycle,can be used for the treatment of textile fibers, textile sheet materials and leather and as stabilizers in synthetic polymers.

Abstract: Topically applicable sunscreen/cosmetic compositions well suited for enhanced photoprotection of human skin and/or hair against the damaging effects of UV-A and UV-B irradiation, particularly solar radiation, comprise a photoprotecting effective amount of a novel cinnamonitrile-substituted polyorganosiloxane/polyorganosilane.

Abstract: Disclosed is an anaerobic hardening composition comprising (A) 100 parts by weight of a (meth)acryloyloxy group-containing polyorganosiloxane, (B) from 0.01 to 20 parts by weight of a dialkyl peroxide and (C) from 0.1 to 20 parts by weight of an amine. The composition hardens in the absence of oxygen with excellent hardenability and adhesiveness-revealing speed to give a hardened product having a high adhesion power.

Abstract: A coating agent composition comprising an organopolysiloxane resin: with the organopolysiloxane resin having a number average molecular weight of at least 500 and acrylic or methacrylic functional group-attached silicon atoms in a proportion of 5 to 100 mole % to the total silicon atoms; and with the resin comprising units represented by formula R.sup.1 LSiX.sub.3 in a proportion of 30 to 100 mole %, wherein R.sup.1 is a hydrogen atom or a substituted or unsubstituted organic group having 1 to 18 carbon atoms and X is a hydroxyl group, a hydrolyzable group or a siloxane residue, provided that at least one X is a siloxane residue; wherein from 30 to 80 mole % of the R.sup.1 SiX.sub.3 units are one silanol group-containing units represented by formula R.sup.1 Si(OH)Y.sub.2 wherein Y is a siloxane residue.

Abstract: Covalently and nucleophilically self-curing systems are described which are based on polymerizable and hydrolytically condensable or condensed silicon compounds, which comprise two components, 1 and 2, and which may also comprise one or more conventional additives or fillers, additional copolymerizable monomers or oligomers, additional hydrolytically condensable or condensed compounds of silicon or both, and other elements from the group consisting of Al, Ti, Zr, B, P, Sn, Pb, the transition metals, the lanthanides and the actinides. One component comprises one or more silicon compounds of the formula I, optionally in (pre)condensed form{X.sub.a R.sub.b Si?(R'A).sub.c !.sub.(4-a-b) }.sub.x B (I)and the second component comprises one or more compounds containing at least one substituted or unsubstituted amino group or both. In particular, covalently and nucleophilically self-curing systems are described which are based on acrylates or methacrylates or both.

Abstract: A homogenous polymer composition useful as a membrane for biosensors is disclosed. The polymer composition comprises the reaction products of a diisocyanate, a hydrophilic diol or diamine, and a silicone material. An aliphatic diol or diamine may also be included. Membranes prepared from the composition allow for increasing oxygen permeability and decreased analyte permeability (e.g. glucose). They also possess the necessary physical properties of an outer polymeric biosensor membrane.

Abstract: A glass composite material comprising a polymer chain selected from the group consisting of polysilane, polygermane, polystannane and a copolymer thereof, and a network structure of a metal oxide consisting of a metal atom bonded to the other metal atom through an oxygen atom, wherein the polymer chain is chemically crosslinked with a glass matrix of the network structure of the metal oxide directly or indirectly, and a volume resistivity measured by setting a ratio of a voltage to a film thickness at 10.sup.6 V/cm according to a disc plate electrode method is not more than 3.times.10.sup.6 .OMEGA.cm.

Abstract: A solvent-soluble siloxane polyimide comprising a copolymer obtained by reaction of a diamine compound mixture comprising a diaminopolysiloxane and an alicyclic diamine with an aromatic tetracarboxylic acid anhydride, followed by polyimidization reaction of the resulting polyamic acid forms a heat-resistant adhesive by adding an epoxy resin, a diamine-based curing agent and an organic solvent thereto, The formed adhesives show a distinguished heat-resistant adhesiveness when the resulting siloxane polyimide soluble in ordinary organic solvents is used as a main component of the adhesive for bonding between a base material and a copper foil of a flexible printed substrate. By further addition of a fluorinated resin to the heat-resistant adhesive, the adhesiveness can be more improved.

Abstract: Provided are an organopolysiloxane resin having a number average molecular weight of at least 500 and a silanol group content of at least 5 weight %, and comprising units of formula R.sup.1 SiO.sub.3/2, wherein R.sup.1 is a hydrogen atom or a monovalent substituted or unsubstituted hydrocarbon group having 1 to 18 carbon atoms, in a proportion of 30 to 100 mole %, the units of formula R.sup.1 SiO.sub.3/2 including 30-80 mole % of one silanol group-containing units of formula R.sup.1 Si(OH)O.sub.2/2 ; a production method of the aforesaid organopolysiloxane resin; and a curable organopolysiloxane resin composition comprising the aforesaid organopolysiloxane resin.

Abstract: An emulsion polymer is disclosed by the present invention. In particular, the emulsion polymer comprises a protective colloid and a functionalized silane component which is of the formula: ##STR1## wherein R" is C.sub.1 -C.sub.5 alkyl, R' is C.sub.1 -C.sub.5 alkyl, R is SH, CH.sub.2 .dbd.CH--, CH.sub.2 .dbd.C(CH.sub.3)--C(O)O--, CH.sub.2 .dbd.CH--C(O)O--, and ##STR2## n is 1-10, and m is 2 or 3.

Abstract: Topically applicable sunscreen/cosmetic compositions well suited for enhanced photoprotection of human skin and/or hair against the damaging effects of UV-A and UV-B irradiation, particularly solar radiation, comprise a photoprotecting effective amount of a novel cinnamonitrile-substituted polyorganosiloxane/polyorganosilane having one of the formulae (1) to (3): ##STR1## wherein A is a monovalent cinnamonitrile radical which comprises an alkylene or alkyleneoxy bridging group, which is bonded directly to a silicon atom, and which has the formula (4): ##STR2##

Abstract: The present invention relates to a silicone foam control composition that is able to inhibit foaming only during the rinse stage without impairing a strong foaming action during the wash stage. The silicone foam control composition comprises 80 to 99 weight % of an organopolysiloxane containing amino-functional or carboxyl-functional organic groups and silica with a specific surface area of at least 50 m.sup.2 /g.

Abstract: Biocompatible membranes for use with biosensors are provided. The membranes are polymers which can be prepared from (a) a diisocyanate, (b) a hydrophilic polymer, (c) a siloxane polymer having functional groups at the chain termini, and optionally, (d) a chain extender.

Abstract: A glass composite material comprising a polymer chain selected from the group consisting of polysilane, polygermane, polystannane and a copolymer thereof, and a network structure of a metal oxide consisting of a metal atom bonded to the other metal atom through an oxygen atom, wherein the polymer chain is chemically crosslinked with a glass matrix of the network structure of the metal oxide directly or indirectly, and a volume resistivity measured by setting a ratio of a voltage to a film thickness at 10.sup.6 V/cm according to a disc plate electrode method is not more than 3.times.10.sup.6 .OMEGA.cm.

Abstract: The present invention provides a polyimide resin composition comprising:(a) a polyamide resin comprising a repeating unit represented by the general formula (1): ##STR1## wherein X represents a tetravalent organic group represented by the formula (2): ##STR2## Y represents a divalent organic group comprising a divalent siloxane residual group represented by the formula (3): ##STR3## wherein m is an integer of 60 to 120; and a divalent aromatic group represented by the formula (4): ##STR4## wherein R.sup.1 represents a hydrogen atom or a fluorine atom; and (B) cyclohexanone. From this composition, polyimide resin films can be obtained by heating at a lower temperature for a short time, and the films obtained show good adhesion under moisture-resistant conditions.

Abstract: A hydrophilic oxygen permeable contact lens having a front surface which is not to be in contact with the cornea of a human eye when the contact lens is worn on the human eye, wherein at least the front surface of the contact lens is coated with a hydrophilicity rendering material which renders the front surface hydrophilic and which is selected from the group consisting of: (A) hydrophilic silicone oil which is represented by the formula given in the specification and whose viscosity at a temperature of 20.degree. C. is not higher than 5,000 centipoise; (B) polysaccharide or its derivative; and (C) denatured collagen whose average molecular weight is in a range of 400.about.100,000. Also disclosed is a method of producing the hydrophilic oxygen permeable contact lens.

Abstract: A room-temperature-curable silicone elastomer composition obtained from diorganopolysiloxane that is endblocked by silanol at both molecular chain terminals and diorganopolysiloxane that is endblocked at one molecular chain terminal by silanol and at the other terminal by trialkylsiloxy; an alkoxy functional silane; an organopolysiloxane resin; a curing catalyst; and a diorganopolysiloxane that contains at least 2 carboxyl groups. The room-temperature-curable silicone elastomer composition has an excellent pre-cure workability and cures into a low-modulus, high-elongation silicone elastomer.

Abstract: Leather and skins are water repellent in aqueous emulsion in the presence of emulsifiers with polysiloxanes which are functionalized with carboxyl groups in a comb-like manner and in which the carboxyl groups are bonded to the polymer main chain via spacer groups in the form of linear or branched C.sub.2 -C.sub.40 -alkylene groups which may be interrupted by up to 8 non-neighboring oxygen atoms or groups of the formula --NR.sup.1 --, CO-- ?sic! or --CO--NR.sup.1 -- and in addition may carry up to 5 carboxyl groups or carboxamido groups of the formula --CO--NR.sup.1 R.sup.2 --, where R.sup.1 and R.sup.2 are each hydrogen or C.sub.1 -C.sub.4 -alkyl, the spacer groups being bonded to the polymer main chain via a direct bond or via an oxygen atom or a group of the formula --NR.sup.1 --, --CO--, --CO--NR.sup.1 -- or --CO--O--.

Abstract: Organic-inorganic composite particles which include a (meth)acrylic resin framework and a polysiloxane framework having in its molecule an organosilicon containing a silicon atom directly and chemically combined with at least one carbon atom of the (meth)acrylic resin framework, and also contain 25 wt % or more of SiO.sub.2 which constitutes the polysiloxane framework and have a mean particle diameter of .gtoreq.0.5 .mu.m. The particles have the mechanical resilience necessary to maintain a constant gap distance between a pair of members to be arranged with the correct gap distance between them, and the hardness and fracture strength necessary to maintain the gap constant with smaller numbers; and also do not readily cause physical damage to the members. The composite particles can be employed as spacers 8 for a liquid crystal display as they stand or with an adhesive layer formed on the surface.

Abstract: A coating composition comprising:a hydrolyzed or partially hydrolyzed alkoxysilane,a solvent,and an arylcyclobutene;is useful in a variety of applications, including coatings for multichip modules, flat panel displays and integrated circuits. The preferred alkoxysilanes correspond to the formula: ##STR1## wherein R is C.sub.1 -C.sub.6 alkylidene, C.sub.1 -C.sub.6 alkylene, arylene, or a direct bond; Y is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, aryl, 3-methacryloxy, 3-acryloxy, 3-aminoethylamino, or 3-amino; R' is independently in each occurrence C.sub.1 -C.sub.6 alkyl; and Z is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl or OR'.

Abstract: Organosilicon-containing materials are useful in articles such as biomedical devices, including contact lenses.

Abstract: Polycarbonate-polysiloxane block copolymers are prepared by interfacial polymerization technique in the presence or a phase transfer catalyst.

Abstract: Novel curable siloxane polymers having integral ultra-violet light absorbers are disclosed which are useful in preparing a variety of commercial silicone products requiring excellent resistance to loss of UV protection due to external forces.

Abstract: Crosslinkable copolymers suitable for use as elevated temperature pressure-sensitive adhesives comprise randomly arranged silarylene units and siloxane units. Preferably, there is present in the copolymer backbone in the range of 0.8 to 1.2 siloxane to silarylene units, and there being present in the copolymer a crosslinking functionality.

Abstract: Disclosed is a liquid epoxy resin composition comprising (A) a liquid epoxy resin, (B) a dimethylpolysiloxane having epoxy groups at its both ends, and (C) a dispersing agent comprising the reaction product of (C-1) a dimethylpolysiloxane having amino groups or carboxyl groups reactive with epoxy resins at its side chains or both ends and having phenyl groups or polyether groups for improving its compatibility with epoxy resins at its side chains, and (C-2) an epoxy resin having the same structure as the component (A). The composition has a reduced internal stress, while maintaining the heat resistance intrinsic to epoxy resins, and has excellent resistance, crack resistance and heat shock resistance.

Abstract: The silicone rubber composition of the present invention comprises (A) an organopolysiloxane obtained by mixing and heating an organopolysiloxane having a silanol group at both ends of the molecular chain and a silane or a siloxane having two hydrolyzable groups in the molecule, (B) a finely divided silica, and (C) a curing agent. The composition, wherein the content of low-molecule siloxanes is remarkably constrained, is quite useful in the application wherein low-molecular siloxanes are obnoxious, for example, in the application of electrical contacts and parts used adjacent thereto, roll materials of copying machines, gaskets for construction, etc.

Abstract: Polysulfoneimide oligomers having crosslinking end cap moleties which provide improved solvent-resistance to cured composites are generally represented by backbones of the formula: ##STR1## wherein ##STR2## n=1 or 2; R and R' are divalent aromatic organic radicals having from 2-20 carbon atoms; ##STR3## E=allyl or methallyl; R=a trivalent C.sub.(6-13) aromatic organic radical;R.sub.1 =any of lower alkyl, lower alkoxy, aryl, or substituted aryl;R'=a divalent C.sub.(6-30) aromatic organic radical;j=0, 1, or 2; andG=--CH.sub.2 --, --O--, --S--, or --SO.sub.2 --The crosslinkable oligomers are made by reacting substituted phthalic anhydrides with hydroxyaryl amines and suitable crosslinking end cap reactants, or by self-condensation of phthalimide salts followed by capping the polymers.

Abstract: The invention relates to a radiation curable release coating composition comprising:(a) from about 0.05 to about 25 percent by weight of polymer selected from the group consisting of polymers falling within the general formula: ##STR1## and mixtures thereof, 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;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.

Abstract: The invention relates to crosslinked organopolysiloxanes which contain groups which form free radicals and are built up from units of the formula[R.sub.a Si(O.sub.(3-a)/2)-R.sup.1 -X-(R.sup.1 -Si(O.sub.(3-a)/2)).sub.b R.sub.a ] (1),in whichX is a radical from the group consisting of --N.dbd.N--, --O--O--, --S--S-- and --C(C.sub.6 H.sub.5).sub.2 --C(C.sub.6 H.sub.5).sub.2 --, andR is monovalent SiC-bonded, optionally substituted C.sub.1 - to C.sub.18 -hydrocarbon radicals,R.sup.1 is divalent SiC-bonded, optionally substituted C.sub.1 - to C.sub.18 -hydrocarbon radicals which can be interrupted by divalent radicals, bonded to carbon atoms on both sides, from the group consisting of --O--, --COO--, --OOC--, --CONR.sup.2 --, --NR.sup.2 CO-- and --CO--,R.sup.2 is a hydrogen atom or a radical R,a has the values 0, 1 or 2 andb has the values 0 or 1,and further organosiloxane units. The organopolysiloxanes are used as free radical macroinitiators for grafting polymerization of ethylenically unsaturated monomers.

Abstract: Organofunctional siloxanes useful in a wide variety of personal care and plastics applications are disclosed having a carboxyalkylaminoalkyl functionality.

Abstract: Organosilicon-containing materials are useful in articles such as biomedical devices, including contact lenses. The materials include macromonomers endcapped with at least one ethylenically unsaturated radical, and monomers. The macromonomers and monomers include units of the formula: ##STR1## wherein: each Y is --O-- or --NR.sup.30 -- wherein R.sup.30 is H or C.sub.1 -C.sub.6 alkyl;each R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is independently selected from the group consisting of H, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl, C.sub.2 -C.sub.6 alkyl wherein at least one methylene group is replaced with --O--, C.sub.2 -C.sub.6 haloalkyl wherein at least one methylene group is replaced with --O--, and --R.sup.Si ;m and n are independently 0 or an integer of 1 to 6;each R.sup.Si is independently an organosilicon radical; andR is the divalent residue of an .alpha., .omega.-dihydroxyl compound or an .alpha., .omega.-diamino compound.