Abstract: A composition comprising a least one fluorochemical polyether silane compound having a polyfluoropolyether segment and at least two hydrolysable silane groups per molecule, one or more non-fluorinated compounds having at least two hydrolysable groups per molecule, and/or a partial condensate thereof, is disclosed. The composition provides durable water, oil and stain repellency to a substrate.

Abstract: Surfaces of various types of substrates, including glass, ceramics, and metals, are rendered stable to heat and corrosion by treatment with a silicon-containing polymer which may be an alkoxy silyl substituted polysilazane or an alkoxy silyl substituted polysiloxazane. Polymeric coatings of the compositions may be cured at room temperature to about 50° C. in an atmosphere containing moisture without requiring the introduction of a catalytic curing agent.

Abstract: A composition is disclosed that cures to form a high strength adhesive bond with properties suitable for use in sealing the parts of ranges and other appliances together, without the necessity for a controlled humidity curing environment and without necessity for special ventilation equipment. The present invention describes a self-bonding curable silicone elastomer containing, inter alia, certain unsaturated aliphatic trialkoxysilanes, such as allyltrimethoxysilane, and having physical properties ideal for bonding glass or metal substrates in glass-top or ceramic-top ranges and ovens.

Abstract: An impression material for the use with an impression spoon in patients, wherein the impression material comprises curable components and at least one first filler, characterized in that said at least first filler has a BET surface of from 20 to 50 m2/g, preferably from 30 to 40 m2/g, whereby the impression material attains a low thixotropy and a viscosity of from 1 to 350 Pas.

Abstract: A room temperature rapid-curable silicone composition is provided which includes (A) an organopolysiloxane terminated with hydroxyl groups, having a viscosity of from 25 mPa·s to 1,000,000 mPa·s at 25° C.; (B) a compound selected from the group consisting of a hydrolyzable silane represented by the following general formula (1): RnSiX4−n  (1) wherein R represents a monovalent hydrocarbon group having 1 to 12 carbon atoms; X represents a compound selected from the group consisting of a ketoxime group, an alkoxyl group, an alkenoxyl group and an acyloxyl group; and n represents an integer of 0 to 2, and a partial hydrolysis-condensation product thereof; and (C) a water-containing wet-process silica having an average particle diameter of 100 &mgr;m or smaller, which is a chief source for feeding water necessary for condensation curing reaction.

Abstract: A nonsagging and extrudable room temperature curable silicone rubber composition with excellent adherence to a variety of substrates comprising (A) diorganopolysiloxane having silicon-bonded alkoxy in molecular chain terminal position, (B) surface-hydrophobicized dry method silica, (C) non-surface-hydrophobicized dry method silica, (D) alkoxysilane, (E) an organotitanium compound, and (F) light stabilizer and/or UV absorber.

Abstract: Room temperature vulcanizable silicone rubber compositions comprising: hydroxyl endblocked polyorganosiloxane, at least one phenyl-substituted tris-functional ketoximino silane and an aminofunctional silane adhesion promoter characterized as having less than three hydrolyzable alkoxy groups attached to the silicon are provided.

Abstract: The specification describes and claims room temperature vulcanisable compositions formed by mixing components comprising a polysiloxane having hydroxyl or hydrolysable groups, a crosslinker having silicon bonded hydrolysable groups selected from the group consisting of alkoxy-, acetoxy- and oximo and a hydroxy terminated urethane prepolymer with no residual isocyanate groups formed from a polyol and an isocyanate. The compositions demonstrate improved adhesion, thixotropy and toolability.

Abstract: Multi-stranded silicone rubber fishing skirts printed with RTV adhesive inks and/or laminated with colored foils and the method of manufacture of the fishing skirts are disclosed herein. The RTV inks set in the presence of humidity. The foils and inks can be applied to a silicone rubber substrate in preferred patterns and in registry with other areas containing foil or ink. The adhesive ink preferably comprises a mixture of an RTV adhesive, oil based thinner and/or pigment. In various processes, the ink is silk-screen printed and air-dried. One or more foils can be bonded to the rubber with different techniques. The foil can be vulcanized to the rubber substrate, bonded to a wet ink, or bonded under pressure to exposed smooth surfaces. The surface texture can be defined during and after vulcanization at the mold and with a smoothing template or with printed ink.

Abstract: In one embodiment, the present invention relates to a method of treating a wound, involving applying to the wound a room temperature vulcanizing silicone composition comprising a crosslinkable polymer, a crosslinking agent, and a catalyst; permitting the room temperature vulcanizing silicon composition to cure thereby forming a membrane having a thickness from about 0.1 mm to about 5 mm; and removing the membrane from the wound after at least about 1 day.

Abstract: A silicone sealant composition containing: (a) a moisture curable organopolysiloxane component, comprising a mixture or reaction product of (i) an organopolysiloxane polymer having hydrolyzable substituent groups and (ii) a polyfunctional silicon compound having two or more hydrolyzable substituent groups, (b) a filler and (c) a hydrocarbon fluid comprising, based on 100 parts by weight of the hydrocarbon fluid, greater than 40 parts by weight cyclic paraffinic hydrocarbons and less than 60 parts by weight noncyclic paraffinic hydrocarbons, exhibits improved tensile, elongation and adhesive properties.

Abstract: The present invention has its object to provide a curable composition showing a controlled initial curing rate and, hence, offering good workability by introducing a methyl group into the neighborhood of the reactive silicon group within an oligomer to indirectly lower the reactivity of the reactive silicon group within the oligomer.

Abstract: The present invention has its object to provide a curable composition giving cured products improved in residual tack (reduced in stickiness), with the physical properties insuring those tensile characteristics and rubber elasticity required of sealing compositions for general architectural use being retained. The present invention provides a curable composition which comprises (I) 100 parts by weight of a reactive silicon group-containing polyether oligomer with the percentage of the number of reactive silicon groups to the number of molecular chain terminals as determined by 1H-NMR analysis being not less than 85% and (II) 1 to 500 parts by weight of a plasticizer.

Abstract: A silicone composition that is oil resistant when cured is described. More particularly, this composition includes a silanol terminated silicone fluid, an organic plasticizer, a filler and a crosslinker, wherein the cured composition remains adhesive after exposure to oil. The present compositions provide superior adhesive properties after exposure to oil than conventional RTV silicone adhesives having M-stopped silicone plasticizers. Methods of making and using cured elastomeric products made from the present compositions are also provided.

Abstract: A one-pack type curable resin composition having high adhesive strength to various substrates, good storage stability and excellent restoring properties is disclosed. The one-pack type curable resin composition contains an organic polymer (a) having at least one reactive silicon group per molecule, a compound (b) having reactive silicon group in its molecule, a non-phthalate plasticizer (c) having no phthalate structure in its molecule, and a stannous curing catalyst (d).

Abstract: Electrical interconnects for solar cells or other electronic components using a silver-silicone paste or a lead-tin (Pb—Sn) no-clean fluxless solder cream, whereby the high breakage of thin (<6 mil thick) solar cells using conventional solder interconnect is eliminated. The interconnects of this invention employs copper strips which are secured to the solar cells by a silver-silicone conductive paste which can be used at room temperature, or by a Pb—Sn solder cream which eliminates undesired residue on the active surfaces of the solar cells. Electrical testing using the interconnects of this invention has shown that no degradation of the interconnects developed under high current testing, while providing a very low contact resistance value.

Abstract: A condensation curable coating composition comprises the following and any reaction product thereof: (A) a room temperature vulcanizable polyorganosiloxane composition; and (B) a marine foul release-enhancing proportion of at least one organic compatible silicone fluid free from silanol groups and being capable of blooming to the surface of a cured product of component A.

Abstract: This invention has its object to provide a curable resin compositions useful as contact adhesives with a prolonged tack retention period, without affecting the final bond strength. This invention is related to a A curable resin composition which comprises (I) a reactive silicon group-containing polyether oligomer, (II) a copolymer comprising a molecular chain substantially composed of one or more acrylate ester monomer units and/or methacrylate ester monomer units and (III) an accelerator.

Abstract: A room temperature curable organopolysiloxane composition comprising (1) a hydroxyl end-blocked organopolysiloxane having a viscosity of 10-1,000,000 centistokes at 25° C. in admixture with a premix of (2) methyltriacetoxysilane or a partial hydrolyzate thereof as a curing agent and (3) methanol is improved in shelf stability, physical properties and outer appearance as well as adhesion to aluminum.

Abstract: An organopolysiloxane composition comprising (A) an organopolysiloxane, (B) a silane compound having at least two hydrolyzable groups or a partial hydrolyzate thereof, and (C) the addition reaction product between a vinyl group-bearing bisphenol A skeleton compound and an organoxy group-bearing silicon compound is curable at room temperature to a variety of resins including PBT, HIPS and acrylic resins.

Abstract: Compositions comprising a silylated polymer and an adhesion promoter, the silylated polymer having an inorganic or organic backbone and at least two groups thereon selected from alkoxysilyl, aryloxysilyl, alkyloximinosilyl and silanol groups and the adhesion promoter being a silane adhesion promoter of the formula: R1 is a branched or cyclic alkylene group, an arylene group or an alkarylene group, any of which may be optionally interrupted by one or more ether oxygen atoms or a (poly)sulfide bridge, provided that R1 has at least 4 carbon atoms; R2 is an alkyl, aryl or alkaryl radical having 1 to 6 carbons; R3 is a C1 to C6 alkoxy group or a C3 to C5 ketoximato group; R4 is hydrogen, a hydrocarbon group, which may optionally be substituted, or a group which will thermally deblock to form an amine group containing the nitrogen atom to which it is attached; and z is 0 or 1.

Abstract: A room temperature curable organopolysiloxane composition comprising (A) a diorganopolysiloxane both-side terminated with hydroxyl groups, represented by the general formula: HO(R12SiO)nH (wherein R1 represents a monovalent substituted or unsubstituted hydrocarbon group, and n represents an integer of 150 or more), (B) an organohydrogenpolysiloxane having in one molecule at least three hydrogen atoms bonded to silicon atoms, (C) a compound selected from the group consisting of an organosilane having in one molecule at least two alkoxyl groups bonded to silicon atoms and containing at least one primary amino group bonded to a silicon atom through an alkylene group and a partial hydrolysis-condensation product thereof, (D) a metal fatty acid salt, and (E) an organic compound having at least one C═O group in one molecule, capable of reacting the primary amino group of the component-(C) to form water.

Abstract: A moisture curable composition excellent in transparency, operating efficiency and storage stability, and is suitable for use as an adhesive and a sealing material is provided. The moisture curable composition produced by blending 100 parts by weight of a mixture (A) and 2 parts by weight to 300 parts by weight of amorphous powder (B). The mixture (A) comprises (1) a copolymer having reactive silicon groups which can be cross-linked by hydrolysis, whose molecular chain substantially consists of (i) alkylacrylate and/or alkylmethacrylate monomeric units having an alkyl group with 1 to 8 carbon atoms, and (ii) alkylacrylate and/or alkylmethacrylate monomeric units having an alkyl group with 10 or more carbon atoms, and (2) a polymer substantially consisting of oxyalkylene including reactive silicon groups which can be cross-linked by hydrolysis. The amorphous powder (B) has a grain diameter ranging from 0.01 &mgr;m to 300 &mgr;m.

Abstract: Blending (A) a diorganopolysiloxane end-blocked with a hydroxyl group, (B) a hydrolyzable silane having ketoxime, alkoxy, acyloxy, amide or amino groups or a partial hydrolyzate thereof, (C) an organic compound having a C═O group, and (D) an organic compound having a NH2 group gives a condensation curing type composition which is fast and deeply curable at room temperature.

Abstract: A room temperature-curable one-part moisture curable composition exhibiting excellent storage stability as well as good adhesion is provided. The cured product produced thereform has excellent rubber elasticity as well as high strength. The one-part moisture curable composition comprises (A) an organic polymer having at least one reactive silyl group in the molecule, (B) an isocyanate compound having at least one isocyanate (NCO) group bonded to secondary or tertiary carbon in the molecule, and (C) a latent curing agent. The latent curing agent (C) is preferably a ketimine wherein a branched carbon atom or a ring member carbon atom is bonded to &agr; position of at least one of the ketimine carbon or the ketimine nitrogen.

Abstract: An antifoulant composition includes a fluorinated silicone resin: wherein R is the same or different group and stands for an alkyl of 1 to 10 carbon atoms, R′ is H or a lower alkyl of 1 to 10 carbon atoms, n is 2 to 10, x is at least 1 and y is at least 2.

Abstract: A three-stage process for the continuous preparation of RTV-1 compositions comprises, in a first step, preparing a raw mixture of &agr;,&ohgr;-dihydroxypolydiorganosiloxane, filler and, if desired, further constituents, in a second step, freeing the raw mixture of gas inclusions under reduced pressure and, if desired, mixing it with further constituents and, in a third step, mixing the degassed raw mixture with a crosslinker, a condensation catalyst and, if desired, additional constituents not yet added in the first and second steps.

Abstract: In a process for preparing a one-package RTV organopolysiloxane composition comprising (A) an organopolysiloxane containing at least two Si—OH groups or hydrolyzable groups, (B) an organosilane having at least two hydrolyzable groups or a partial hydrolyzate thereof, and (C) an inorganic filler, components (A) and (B) are premixed in a substantially anhydrous state, and component (C) is then added to the premix. Despite the absence of sag-control agents, the composition in the uncured state has a sufficient viscosity for sag-control, ease of extrusion, and improved slump properties.

Abstract: A condensation curable coating composition comprises the following and any reaction product thereof: (A) a room temperature vulcanizable polyorganosiloxane composition; and (B) a marine foul release-enhancing proportion of at least one organic compatible silicone fluid free from silanol groups and being capable of blooming to the surface of a cured product of component A.

Abstract: A moisture curing composition comprising (a) an oxyalkylene polymer having at least one reactive silicon group in each molecule, (b) bis(3-triethoxysilylpropyl)tetrasulfane, and (c) a condensation catalyst. The presence of the bis(3-triethoxysilylpropyl)tetrasulfane in the composition provides for improved physical properties such as tensile strength and elongation. The present compositions are suitable for use in such applications as sealing materials for construction both in the form of extrudable liquid compositions and as cured preformed configurations such as tapes.

Abstract: An oxime curable silicone sealant composition with good oil resistance can be formulated, using calcium carbonate filler with higher water content than previously known to be useful. The sealant formulation is adjusted to accommodate higher water content by adjusting the ketoximosilane crosslinker level. The correct amount of crosslinker is determined by the hydroxy content present from both the silanol on the base polymer and the water content of the filler.

Abstract: Anti-fouling coatings comprise a room temperature vulcanizable polyorganosiloxane composition and a polyorganosiloxane free from silanol groups and comprising at least one hydroxy- or alkoxy-terminated polyoxyalkylenealkyl radical. The latter is capable of blooming to the surface of the cured room temperature vulcanizable composition, thus inhibiting the deposition of marine life on the coated article.

Abstract: The invention relates to alkoxy-crosslinking RTV1 silicone rubber mixtures based on polydiorganosiloxanes with dialkoxyorganosiloxy end groups, the organo radical being a substituted amidoalkyl radical, which can be prepared using conventional mixing technologies. The novel RTV1 silicone rubber mixtures cure rapidly and without tack to give products with good mechanical properties. The shelf-life of the mixtures is excellent. One particular advantage of this invention is that it is also possible to create systems in which crosslinking produces only elimination products which are completely free from toxic methanol.

Abstract: Aqueous dispersions organopolysiloxanes which are free of organic transition metal compounds and of organic compounds of the metals of the main groups III, IV and V. These dispersions can be produced using the following starting compounds:(A) organopolysiloxane containing condensation-capable groups;(B) an organosilicon compound of the formula{[(RO).sub.3 Si--R.sup.3 --].sub.e R.sup.2.sub.1-e }.sub.a Si(OR).sub.4-a(II),in whichR is identical or different and is a hydrogen atom or alkyl radical having 1 to 6 carbon atoms,R.sup.2 is identical or different and is an SiC-bonded hydrocarbon radical having 1 to 18 carbon atoms, optionally substituted with halogen atoms, ether groups, ester groups, epoxy groups, mercapto groups or (poly)glycol radicals comprised of oxyethylene units, oxypropylene units and mixtures thereofR.sup.3 is identical or different and is a divalent hydrocarbon radical,a is 0 or 1, ande is 0 or 1 where {[(RO).sub.3 Si--R.sup.3 --].sub.e R.sup.2.sub.1-e }.sub.

Abstract: The present invention provides for a two component room temperature vulcanizable silicone compositions wherein both components may be used in approximately equal weights or volumes thereby minimizing the effects of mixture ratio errors.

Abstract: In the chain extension of a low molecular weight .alpha.,.omega.-dihydroxypoly(diorganosiloxane) wherein the siloxane is contacted with a chain extension catalyst, the improvement wherein said catalyst comprises at least one phosphoric acid ester, orthophosphoric acid, or a salt thereof. The reaction proceeds rapidly and, when complete, the catalyst can easily be deactivated to prevent degradation and/or rearrangement.

Abstract: A flowable silicone product and process is disclosed which creates an impenetrable seal especially between a new bathtub liner and an old bathtub. The flowable silicone product has a short cure time and is injected into a channel which is formed around the perimeter of the top edge of the old bathtub.

Abstract: A moisture curable composition comprises a mixture and/or a reaction product of a polymeric material having not less than two groups bonded to silicon which are hydroxyl or hydrolyzable groups, an alkoxysilane curative, an adhesion promoter and catalyst material for catalyzing the condensation reaction between the polymeric material and the alkoxysilane curative. The adhesion promoter comprises a silicone-organic copolymer consisting of units (I) according to the general formula R.sub.a SiO.sub.(4-a)/2 and units (ii) according to the general formula R.sub.b R'SiO.sub.(3-b)/2 where R represents a monovalent hydrocarbon group and R' represents an oxyalkylene chain R.sup.6 (C.sub.2 H.sub.4 O).sub.x (C.sub.3 H.sub.6 O).sub.y Z in which R.sup.6 represents a hydrocarbon linkage to a silicon atom, Z represents H or a carboxylic acid residue.

Abstract: A kit for the production of rapidly-hardening aminosilane cross-linking silicone masses including:(A) 100 parts by weight of an at least bifunctionally terminated diorganopolysiloxane, which include a linear or branched chain of repeating units of the formula ##STR1## and which contains at least two end groups Z, wherein Z is --H, --OH, OR.sup.l or --SiR.sup.3 (NR.sup.4 R.sup.5).sub.2, and R.sup.l and R.sup.2 are independently a saturated or unsaturated hydrocarbon radical, optionally substituted with halogen or cyano groups,(B) 0.1 to 20 parts by weight of an aminosilane cross-linker of the general formulaR.sup.3.sub.y --Si--(NR.sup.4 R.sup.5).sub.4-ywherein y=0 or 1,R.sup.3 is hydrogen or a monovalent saturated or unsaturated hydrocarbon or hydrocarbonoxy radical, andR.sup.4 and R.sup.5 are independently selected from hydrogen and saturated or unsaturated aliphatic, cycloaliphatic, or aromatic hydrocarbon radical with 1 to 15 carbon atoms, optionally substituted with halogen or cyano groups,(C) 0.

Abstract: In the production of a poly(diorganosiloxane) with diorganyloxyorganylsilyl or triorganyloxysilyl end groups wherein at least one .alpha.,.omega.-dihydroxypoly(diorganosiloxane) is reacted with at least one alkoxysilane in the presence of a catalyst, the improvement which comprises employing as the catalyst at least one phosphoric acid ester or salt thereof. The reaction proceeds rapidly and, when complete, the catalyst can easily be deactivated to prevent degradation and/or rearrangement.

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: Bubble formation observed when curing a sealant composition on a hot porous substrate is reduced where the room temperature vulcanizable silicone sealant composition comprises a polydiorganosiloxane, a crosslinker with silicon-bonded alkoxy groups, filler, and a titanium catalyst by the addition of 0.5 to 2 weight percent of an oximosilicon compound.

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: A room temperature vulcanizable silicone rubber composition with high elongation and low modulus comprising 10-90 percent by weight polydiorganosiloxane having terminal hydroxyl groups, 1-10 percent by weight phenyl tris-functional ketoximino-containing silane crosslinker, 0-14 percent by weight of a reinforcing or 0-60 percent by weight of a nonreinforcing filler or semi-reinforcing filler or a mixture thereof for a total of all fillers in the range of from about 6-60 percent by weight, from 0-2.5 percent by weight of an organofunctional silane adhesion promoter and an optional plasticizer and catalyst. These compositions cure to elastic materials useful as caulking materials, adhesives, coatings and encapsulating materials for the construction and other industries.

Abstract: A room temperature vulcanizing alkoxy curing silicone composition cured by a dual catalyst system comprising either (C.sub.4 H.sub.9)Sn(O.sub.2 CCH.sub.3)(O.sub.2 C(CH.sub.2).sub.10 CH.sub.3) or an approximately equimolar mixture of dibutyltin diacetate and dibutyltin dilaurate or mixtures thereof whereby tooling time is increased without deleterious effects upon cured performance properties.

Abstract: A room temperature-curing silicone elastomer composition which has excellent workability before curing and forms a silicone elastomer after curing which exhibits low modulus and high elongation. This composition contains a hydroxyl-capped polydiorganosiloxane, a siloxane chain extender of the formulaR.sup.1 (R.sup.2.sub.n R.sup.3.sub.(3-n) SiO)Si(OR.sup.4).sub.2in which R.sup.1, R.sup.2, and R.sup.3 are aliphatic monovalent hydrocarbon groups, R.sup.4 is a hydrocarbon group having from 1 to 8 carbon atoms per group, and n is 0 or 1, an alkoxysilane crosslinker, and a curing catalyst.

Abstract: A coating composition for carriers which are adapted for use in electrophotography is described. The composition comprises an organopolysiloxane of the following average unit formula (1)R.sup.1.sub.a Si(OR.sup.2).sub.b O.sub.[4-(a+b)]/2 (1)wherein R.sup.1 represents an alkyl group having from 1 to 10 carbon atoms or a phenyl group, R.sup.2 represents a hydrogen atom or an alkyl, alkenyl or alkoxyalkyl group, each having from 1 to 10 carbon atoms for the alkyl and alkenyl and from 2 to 10 carbon atoms for the alkoxyalkyl, a is a value of 0.8.ltoreq.a.ltoreq.1.8, b is a value of 0<b<3, an organosilane of the following general formula (2) serving as a crosslinking agent for the organopolysiloxane(CH.sub.3).sub.2 SiX.sub.2 (2)wherein each X represents an alkenoxy group or oxime having from 2 to 10 carbon atoms, and a curing catalyst for the organopolysiloxane. Carriers having core particles and a cured film of the composition formed on individual particles are also described.

Abstract: A one component room temperature vulcanizable silicone elastomer having primerless adhesion to polyacrylate useful as a sealant

Abstract: A room-temperature curable polyorganosiloxane composition comprising the following components (A) to (C): (A) 100 parts by weight of (1) a mixture of a terminally reactive polyorganosiloxane represented by the formula R.sup.1.sub.a (R.sub.2 O).sub.3-a SiZ[R.sub.2 SiO].sub.n SiR .sup.1.sub.2 ZSi(OR.sup.2).sub.3-a R.sup.1.sub.a ; (2) a silane represented by the formula R.sup.3.sub.b Si(OR.sup.4).sub.4-b or a partially hydrolyzed condensation product thereof; the amount of (A) (1) being from 85 to 100 parts by weight; (B) from 0.01 to 20 parts by weight of a curing catalyst; and (C) from 0.5 to 20 parts by weight of a polycondensation reaction product of an amino group-containing silane represented by the formula X.sub.c Si(WNH.sub.2)Y.sub.3-c and a silazane represented by the formula X.sub.d Y.sub.3-d SiNHSiY.sub.3-d X.sub.d ; where all symbols are defined in the specification.

Abstract: Cyclic aminoalkylsilane compositions are prepared by the reaction of approximately equimolar amounts of an aminoalkyltrialkoxysilane such as 3-aminopropyltrimethoxy-silane and a glycidyl ether such as methyl glycidyl ether. They are useful as adhesion promotors in room temperature vulcanizable compositions comprising polyalkoxysilyl-terrninated polydiorganosiloxanes.