The present invention relates polysiloxane based aerogels obtained by reacting a functionalised poly(dimethylsiloxane) oligomer and an aliphatic or aromatic isocyanate compound in a presence of a catalyst and a solvent. A polysiloxane based aerogels according to the present invention provide high thermal insulation material, while good mechanical properties and performance is maintained.

Provided is a photosensitive resin composition comprising: (A) a silicone resin having an epoxy group and/or a phenolic hydroxyl group; (B) a photoacid generator represented by formula (B); and (C) a carboxylic acid quaternary ammonium compound.

##STR00001##

Transfer tapes include a releasing substrate and an adhesive layer adjacent to the surface of the releasing substrate. The adhesive layer includes a at least one siloxane-based copolymer, and at least one siloxane tackifying resin. The adhesive layer is a pressure sensitive adhesive at room temperature and is convertible into a ceramic-like layer by bake-out at a temperature of from 100-500.

An aminosiloxane ester copolymer, an emulsion containing the copolymer, and processes for making the copolymer and the emulsion are provided. The copolymer and the emulsion may be formulated into hair care compositions, such as conditioners and styling products.

An aminosiloxane ester copolymer, an emulsion containing the copolymer, and processes for making the copolymer and the emulsion are provided. The copolymer and the emulsion may be formulated into hair care compositions, such as conditioners and styling products.

Polymers bearing the following structural elements per molecule: (A) an average of at least two alkoxylated (poly)alkylenimine units, said alkylene being selected from C.sub.2-C.sub.10-alkylene and said alkoxylation being selected from ethoxylation, propoxylation, butoxylation and combinations of at least two of the foregoing, (B) at least one polysiloxane unit, and (C) at least one linkage connecting at least two different alkoxylated (poly)alkylenimine units (A) bearing at least one polysiloxane unit (B), each link-age (C) being selected from organic spacers bearing in the range of from 4 to 30 carbon atoms.

Protective film articles include a thermally stable tape backing with a first major surface and a second major surface, a primer layer on the first major surface of the thermally stable tape backing, and a self-wetting, tack-free adhesive layer at least partially coated on the primer layer. The tack-free adhesive layer includes at least one siloxane-based elastomeric polymer that is thermally stable, and is able to removably adhere to an optical or electronic device without leaving residue on the optical or electronic device. The protective film articles can be used in the preparation of a wide range of optical and electronic articles.

Various embodiments are directed to apparatuses and methods involving an elastomer material comprising a flexible polymer backbone with a particular ratio of at least first moieties and second moieties. The first moieties provide a first number of dynamic bonds resulting from interactions between the first moieties and the second moieties provide a second number of dynamic bonds resulting from interactions between the second moieties, the second number of dynamic bonds having a weaker bonding strength than the first number of dynamic bonds. The elastomer material, based on the ratio of the first moieties and second moieties, exhibits autonomous self-healing, a particular toughness, and is stretchable.

Various embodiments are directed to apparatuses and methods involving an elastomer material comprising a flexible polymer backbone with a particular ratio of at least first moieties and second moieties. The first moieties provide a first number of dynamic bonds resulting from interactions between the first moieties and the second moieties provide a second number of dynamic bonds resulting from interactions between the second moieties, the second number of dynamic bonds having a weaker bonding strength than the first number of dynamic bonds. The elastomer material, based on the ratio of the first moieties and second moieties, exhibits autonomous self-healing, a particular toughness, and is stretchable.

The present disclosure generally relates to adhesive compositions and articles including at least one of polydiorganosiloxane polyoxamide copolymer and/or silicone polyurea block copolymer and a silicate tackifying resin. Some embodiments of the adhesive composition include at least one of a polydiorganosiloxane polyoxamide copolymer and a silicate tackifying resin in an amount of between about 0.1 wt % and about 20 wt %; or a silicone polyurea block copolymer and a silicate tackifying resin in an amount of between about 0.1 wt % and about 30 wt %.