Provided is an organopolysiloxane compound acting as a chain extender for use in a room-temperature-vulcanizing (RTV) composition of a dealcoholization type that can be rapidly turned into a rubber and then exhibit a rubber elasticity. The organopolysiloxane compound is represented by the following general formula (1), and also provided is a composition containing this compound and a linear diorganopolysiloxane with both molecular chain ends being blocked by a silanol group or a hydrolyzable silyl group,

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wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represents a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms; and n is a number of 0 to 10.

A process for end capping and chain extending silanol terminated polydiorganosiloxanes with a mixture of one or more alkylacetoxydialkoxysilanes and one or more alkyldiacetoxyalkoxysilanes. The resulting capped polymeric material may be utilised as a polymer in e.g. a one-part alkoxy sealant composition such as, for example, an alkoxy low modulus clean (non-staining) or clear sealant composition.

A composition is provided that includes a graphene dispersion, a silicone microemulsion, a reactive siloxane emulsion, and water as a majority by weight of the composition. A process for imparting a durable shine to a vehicle surface is also provided. The composition is applied to the vehicle surface. The water is allowed to evaporate from the composition to form a coating imparting a durable shine to the vehicle surface. A coating is obtained after evaporation. The coating includes a silicone film formed by the evaporation of water from a silicone microemulsion and the cross-linking of a siloxane from an emulsion. Graphene particles are embedded in the silicone film. The coating has a thickness of between having a thickness of between 5 and 10,000 nanometers and a hardness of between 3 and 7 GPa.

A composition is provided that includes a graphene dispersion, a silicone microemulsion, a reactive siloxane emulsion, and organic solvent as a majority by weight of the composition. A process for imparting a durable shine to a vehicle surface is also provided. The composition is applied to the vehicle surface. The water is allowed to evaporate from the composition to form a coating imparting a durable shine to the vehicle surface. A coating is obtained after evaporation. The coating includes a silicone film formed by the evaporation of water from a silicone microemulsion and the cross-linking of a siloxane from an emulsion. Graphene particles are embedded in the silicone film. The coating has a thickness of between having a thickness of between 5 and 10,000 nanometers and a hardness of between 3 and 7 GPa.

The silicone emulsion composition for forming a rubber coating film according to the present invention, including (A) an organopolysiloxane having at least two hydroxyl groups bonded to silicon atoms at terminal ends of the molecule in each molecule thereof, (B) an aminoalkyltrialkoxysilane represented by formula (1) ##STR00001##
(where R.sup.1 through R.sup.3 represent H or a univalent hydrocarbon group, R.sup.4 and R.sup.5 represent divalent hydrocarbon groups, R.sup.6 represents a univalent hydrocarbon group, and n is an integer 0 to 6), (C) a vinyltrialkoxysilane represented by formula (2):
CH.sub.2═CHSi(OR.sup.7).sub.3
(where R.sup.7 represents a univalent hydrocarbon group), (D) a surfactant, and (E) water and not containing an organic tin compound, is free of problems with storage stability or byproducts, and a rubber coating film can be formed thereby in a short time without the use of an organic tin compound.

The silicone emulsion composition for forming a rubber coating film according to the present invention, including (A) an organopolysiloxane having at least two hydroxyl groups bonded to silicon atoms at terminal ends of the molecule in each molecule thereof, (B) an aminoalkyltrialkoxysilane represented by formula (1) ##STR00001##
(where R.sup.1 through R.sup.3 represent H or a univalent hydrocarbon group, R.sup.4 and R.sup.5 represent divalent hydrocarbon groups, R.sup.6 represents a univalent hydrocarbon group, and n is an integer 0 to 6), (C) a vinyltrialkoxysilane represented by formula (2):
CH.sub.2═CHSi(OR.sup.7).sub.3
(where R.sup.7 represents a univalent hydrocarbon group), (D) a surfactant, and (E) water and not containing an organic tin compound, is free of problems with storage stability or byproducts, and a rubber coating film can be formed thereby in a short time without the use of an organic tin compound.

A black photosensitive resin composition comprising (A) an acid crosslinkable group-containing silicone resin, (B) carbon black, and (C) a photoacid generator is coated onto a substrate to form a photosensitive resin coating which has improved reliability with respect to adhesion and crack resistance, resolution and flexibility while maintaining satisfactory light shielding properties.

The present teachings generally provide curable polysiloxane compositions including a base resin including a surface active polymer. Articles of manufacture including the curable polysiloxane compositions and slippery coatings and materials also are provided. The compositions may be used to provide slippery, lubricious, or repellent materials and coatings and may provide anti-fouling function. The compositions can provide anti-fouling or foul-release function on open surfaces, internal surfaces, membranes; to provide pinning free or low contact angle hysteresis surfaces; to provide homogeneous interface to suppress nucleation; to provide a barrier layer such as anti-corrosion; to provide anti-stain, anti-smudge, anti-fingerprint, anti-soil function.

The suction fixing sheet of the present disclosure is a suction fixing sheet to be placed on a suction surface of a suction device to prevent contact between a suction target and the suction surface. The suction fixing sheet includes a porous sheet having air permeability in its thickness direction; and a double-sided pressure-sensitive adhesive sheet provided with a substrate, having air permeability in its thickness direction, and disposed on one surface of the porous sheet, or a double-sided pressure-sensitive adhesive layer unprovided with a substrate, formed of a crosslinked pressure-sensitive adhesive, having air permeability in its thickness direction, and disposed on one surface of the porous sheet. The ratio of the thickness of the porous sheet to the thickness of the double-sided pressure-sensitive adhesive sheet or the double-sided pressure-sensitive adhesive layer is 8.0 or more.

The present invention is related to a curable composition for dental impression comprising: a curable base composition and a surfactant system comprising a first surfactant, which is at least one compound having the formula (I) and a second surfactant, which works synergistically with the second surfactant so as to permit the composition to surprisingly have a lower contact angle; these results are reached with relatively low concentrations of biodegradable surfactants.

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