A curable organosilicon resin composition includes; (A) an organopolysiloxane having a resin structure containing 10 to 60 mol % of an R.sup.1SiO.sub.3/2 unit, 30 to 80 mol % of an (R.sup.2).sub.2SiO.sub.2/2 unit, and 1 to 30 mol % of an (R.sup.3).sub.3SiO.sub.1/2 unit. At least a part of the (R.sup.2).sub.2SiO.sub.2/2 unit is in continuous repeating units with the average number of the repeating units being 3 to 80. The organopolysiloxane has a weight average molecular weight of 5,000 to 50,000; the amount of the hydroxy groups bonded to silicon atoms is 0.001 to 1.0 mol/100 g; and the amount of the alkoxy groups, each having 1 to 10 carbon atoms, bonded to silicon atoms is 1.0 mol/100 g or less. A curable organosilicon resin composition has excellent workability, can give a cured product rapidly, and can make the cured product excellent in mechanical properties, heat resistance, crack resistance, and adhesive property, the surface tackiness being suppressed.

A curable organosilicon resin composition includes; (A) an organopolysiloxane having a resin structure containing 10 to 60 mol % of an R.sup.1SiO.sub.3/2 unit, 30 to 80 mol % of an (R.sup.2).sub.2SiO.sub.2/2 unit, and 1 to 30 mol % of an (R.sup.3).sub.3SiO.sub.1/2 unit. At least a part of the (R.sup.2).sub.2SiO.sub.2/2 unit is in continuous repeating units with the average number of the repeating units being 3 to 80. The organopolysiloxane has a weight average molecular weight of 5,000 to 50,000; the amount of the hydroxy groups bonded to silicon atoms is 0.001 to 1.0 mol/100 g; and the amount of the alkoxy groups, each having 1 to 10 carbon atoms, bonded to silicon atoms is 1.0 mol/100 g or less. A curable organosilicon resin composition has excellent workability, can give a cured product rapidly, and can make the cured product excellent in mechanical properties, heat resistance, crack resistance, and adhesive property, the surface tackiness being suppressed.

A pressure sensitive adhesive composition is described that comprises a (meth)acrylic polymer comprising polymerized units of (meth)acrylic ester monomer having a Tg less than 0° C. and ethylenically unsaturated monomer comprising a pendent functional group crosslinked with an amine or carboxylic acid group of at least one amino acid. Also described are aqueous pressure sensitive adhesive compositions, adhesive-coated articles, and methods.

A multicomponent adhesive composition comprises a composition A and a composition B. Composition A comprises at least one silyl polymer comprising at least one hydrolyzable alkoxysilane group and at least one tackifying resin. Composition B comprises at least one catalyst and at least one compound C chosen from a compound C1 with a number-average molecular mass ranging from 300 g/mol to 500 000 g/mol; and a compound C2 with a vapor pressure at 20° C. of greater than or equal to 0.08 kPa; and mixtures thereof. The composition A:composition B mass ratio ranges from 99.98:0.02 to 60:40. The total content of catalyst ranges from 0.01% to 10% relative to the total weight of said adhesive composition.

A multicomponent adhesive composition comprises a composition A and a composition B. Composition A comprises at least one silyl polymer comprising at least one hydrolyzable alkoxysilane group and at least one tackifying resin. Composition B comprises at least one catalyst and at least one compound C chosen from a compound C1 with a number-average molecular mass ranging from 300 g/mol to 500 000 g/mol; and a compound C2 with a vapor pressure at 20° C. of greater than or equal to 0.08 kPa; and mixtures thereof. The composition A:composition B mass ratio ranges from 99.98:0.02 to 60:40. The total content of catalyst ranges from 0.01% to 10% relative to the total weight of said adhesive composition.

The present invention relates to the formation of silazane coatings. The invention provides a polysilazane coating method for limiting fragmentation of polysilazane and an assembly for performing said polysilazane coating method for limiting fragmentation of polysilazane.

The present invention relates to the formation of silazane coatings. The invention provides a polysilazane coating method for limiting fragmentation of polysilazane and an assembly for performing said polysilazane coating method for limiting fragmentation of polysilazane.

Disclosed is a self-invertible inverse latex comprising an aqueous phase containing: a) a crosslinked anionic polyelectrolyte (P) including: —at least one first monomer unit derived from 2-methyl-2-[(1-oxo-2-propenyl) amino] 1-propanesulfonic acid in the form of a free or partially or totally salified acid; —at least one second monomer unit derived from at least one monomer selected from the elements of the group consisting of acrylic acid, methacrylic acid, 2-carboxyethyl acrylic acid, itaconic acid, maleic acid, 3-methyl 3-[(1-oxo-2-propenyl) amino] butanoic acid, the carboxylic function of said monomers being in the free, partially salified or totally salified acid form; and —at least one third monomer unit derived from a polyethylenic crosslinking monomer (AR); b) ethylenediamine disuccinic acid in the form of trisodium salt.

Provided is a curing catalyst having a high safety and a practical curing rate.

According to the present invention, provided is a curing catalyst [B] used for curing a polymer [A] having a reactive hydrolyzable silicon-containing group, wherein the curing catalyst [B] contains a complex of a titanium compound [B1] and an ammonium hydroxide [B2], and an amine compound [B3], the titanium compound [B1] is represented by Chemical Formula (1), the ammonium hydroxide [B2] is represented by Chemical Formula (2), and the amine compound [B3] is represented by Chemical Formula (3), Chemical Formula (4), or Chemical Formula (5).

The present invention relates to an aqueous polyurethane dispersion, a method for the preparation thereof, a product comprising the same, and use thereof for a coating composition, an impregnating composition, an adhesive or a sealant. The aqueous polyurethane dispersion comprises a polyurethane obtained by reacting a system comprising the following components: A1) at least one polyisocyanate having an isocyanate functionality of not less than 2; A2) at least two different polytetramethylene ether glycols A2a) and A2b), the A2a) having a number average molecular weight of not more than 1500 g/mol, the A2b) having a number average molecular weight of more than 1500 g/mol; and A3) at least one anionic or potentially anionic hydrophilic agent having a number average molecular weight of 32 g/mol to 400 g/mol and containing hydroxyl and carboxyl functions; B) at least one amino-functional anionic or potentially anionic hydrophilic agent; and C) at least one amino-functional compound having a number average molecular weight of 32 g/mol to 400 g/mol and containing no hydrophilic group; wherein the ratio of the number average molecular weight of the A2a) to the number average molecular weight of the A2b) is 1:9 to less than 1:1, and the weight of the A3) amounts to 20% to 70% of the weight of the hydrophilic agents of the system, wherein the hydrophilic agents of the system are components A3 and B.