C08K5/5445

Rubber composition for tire, and pneumatic tire

A rubber composition for a tire contains a diene rubber, silica, and a specific modified butadiene polymer, wherein the diene rubber contains an aromatic vinyl-conjugated diene rubber A and at least one rubber component B selected from an aromatic vinyl-conjugated diene rubber b1 other than the rubber A and a butadiene rubber b2 having a weight average molecular weight of ≥15000. A content of the aromatic vinyl-conjugated diene rubber A is from 30 to 90% by mass, and a content of the rubber component B is from 10 to 70% by mass, an average TG of the diene rubber is lower than −20° C., a content of the silica is from 80 to 200 parts by mass per 100 parts by mass of the diene rubber, and a content of the modified butadiene polymer is from 1.0 to 25.0% by mass with respect to content of the silica.

FILM AND LAMINATE
20230125850 · 2023-04-27 · ·

Provided are a film including a matrix material, and a particle having an elastic modulus at 25° C. which is higher than an elastic modulus of the matrix material, in which the film has a region A at at least a part between the matrix material and the particle, and the region A contains a compound having a loss tangent of 0.1 or greater at 25° C.; and a laminate formed of the film.

CURABLE COMPOSITION

A curable composition contains (A) a perfluoro(poly)ether group-containing silane compound having two or more Si atoms bonded to at least one group selected from the group consisting of a hydroxyl group and a hydrolyzable group, (B) a compound (other than (A)) having at least two OR.sup.2 groups bonded to an Si atom (in the formula, R.sup.2 each independently are a hydrogen atom or a monovalent organic group at each occurrence) or a partial hydrolysis condensate thereof, (C) a condensation catalyst, and (D) surface-treated silica.

AQUEOUS COMPOSITION OF ORGANIC POLYMERIC MICROSPHERES, BINDER PARTICLES, AND ION EXCHANGE RESIN

The present invention relates to a composition comprising an aqueous dispersion of a) polymer particles having a z-average particle size in the range of from 50 nm to 500 nm; b) anion exchange resin particles having a D.sub.50 median particle size in the range of from 0.1 μm to 50 μm; and c) polymeric organic microspheres having a D.sub.50 median particle size in the range of from 1 μm to 20 μm, wherein the weight-to-weight ratio of polymer particles to microspheres is in the range of from 0.5:1 to 20:1. The composition of the present invention is useful for paint compositions that form matte finishes with an excellent balance of stain blocking and stain removal properties.

CROSS-LINKABLE MASSES BASED ON ORGANOSILICON COMPOUNDS
20230183427 · 2023-06-15 · ·

Crosslinkable compositions, processes for producing the same and products made therefrom. Where the crosslinkable compositions include a component (A) organosilicon compounds having at least two silanol groups and having a viscosity of 10.sup.3 to 10.sup.6 mPas at 25° C., mixtures (M) containing a component (B) of organosilicon compounds of the formula (I) and/or partial hydrolyzates thereof


R.sup.6R.sup.7N—CR.sup.1.sub.2SiR.sub.a(OR.sup.2).sub.3-a  (I),

a component (C), selected from (C2) compounds of the formula (III)


R.sup.5OH  (III).

The crosslinkable compositions may optionally also include a catalyst (D).

CROSS-LINKABLE MASSES BASED ON ORGANOSILICON COMPOUNDS
20230183427 · 2023-06-15 · ·

Crosslinkable compositions, processes for producing the same and products made therefrom. Where the crosslinkable compositions include a component (A) organosilicon compounds having at least two silanol groups and having a viscosity of 10.sup.3 to 10.sup.6 mPas at 25° C., mixtures (M) containing a component (B) of organosilicon compounds of the formula (I) and/or partial hydrolyzates thereof


R.sup.6R.sup.7N—CR.sup.1.sub.2SiR.sub.a(OR.sup.2).sub.3-a  (I),

a component (C), selected from (C2) compounds of the formula (III)


R.sup.5OH  (III).

The crosslinkable compositions may optionally also include a catalyst (D).

SILICONE-EPOXY COMPOSITIONS AND PROTECTIVE COATINGS
20230183484 · 2023-06-15 · ·

Provided are silicone-epoxy compositions, protective coatings formed from silicone-epoxy compositions, and methods of preparing the same.

SILICONE-EPOXY COMPOSITIONS AND PROTECTIVE COATINGS
20230183484 · 2023-06-15 · ·

Provided are silicone-epoxy compositions, protective coatings formed from silicone-epoxy compositions, and methods of preparing the same.

ADHESIVE POLYORGANOSILOXANE COMPOSITION

An adhesive polyorganosiloxane composition includes, at a specific composition ratio: (A) a linear polyorganosiloxane containing an alkenyl group including a low-viscosity linear polyorganosiloxane containing an alkenyl group; (B) a polyorganosiloxane containing at least three alkenyl groups in the molecule; (C1) a polyorganohydrogensiloxane having 3 or more hydrogen atoms bonded to a silicon atom in the molecule; (C2) a linear polyorganohydrogensiloxane having one hydrogen atom bonded to a silicon atom only at both terminals of the molecular chain, and having no aliphatic unsaturated bonds in the molecule; (D) a filler; (E) a platinum group metal compound; and (F) two or more kinds of specific adhesion imparting agent.

Pigmentable Primer

The invention relates to a primer for improving the adhesion of adhesive tapes to hydrophilic surfaces, such as, in particular, glass or ceramic. The primer according to the invention comprises, dissolved or dispersed in one or more solvents, a mixture G of at least one copolymer obtained by copolymerization of a monomer mixture comprising to at least 90 wt. % the following monomers: vinylcaprolactam and/or vinylpyrrolidone and one or more of the monomers a) and b): c) acrylic acid ester of a linear, primary alcohol having 2 to 10 carbon atoms in the alkyl radical of the alcohol, d) acrylic acid ester of a branched, non-cyclic alcohol having 3 to 12 carbon atoms in the alkyl radical of the alcohol, at least one organofunctional silane of the general structure (Ia) or (Ib)


(R.sup.1O—).sub.xSi(CH.sub.2OR.sup.2).sub.y(R.sup.3).sub.z  (Ia)


(R.sup.1O—).sub.xSi(CH.sub.2NHR.sup.2).sub.y(R.sup.3).sub.z  (Ib), wherein the radicals R.sup.1 independently of each other represent a C.sub.1-C.sub.4-alkyl radical, a C.sub.2-C.sub.6-alkoxyalkyl radical or an acetyl radical; the radicals R.sup.2 independently of each other represent an organic radical; the radicals R.sup.3 independently of each other represent a C.sub.1-C.sub.18-alkyl radical and x=1, 2 or 3; y=1, 2 or 3; x+y≦4 and z=4−x−y; at least one metal compound selected from the group consisting of metal acetylacetonates, metal alkoxides and alkoxy-metal acetylacetonates, at least one amine.