A resin composition, optionally for a semiconductor package, and a prepreg and a metal clad laminate using the same are provided. The resin composition according to the present invention may exhibit excellent flowability although being packed with a high content of an inorganic filler, and may provide a prepreg and a metal clad laminate having excellent adhesive strength for a metal foil, and low relative permittivity and a low dissipation factor.

A water-based hydrogel polymer coating and a method of application to natural rubber or other elastomeric latex products are provided. The water-based hydrogel polymer is mixed with a blend of at least one elastomeric material to provide a hydrogel polymer blend composition. The water-based hydrogel polymer blend composition is applied in a single application to an elastomeric article, such as gloves, without additional solvents in the polymer blend composition and without a separate acid or chemical priming step. The water-based hydrogel coating herein provides increased lubricity to facilitate improved wet and dry donning of the elastomeric article.

An embodiment of the present invention provides a rubber composition for tires and a method for producing same, wherein the rubber composition for tires includes: carbon nanotubes including structural defects on at least a portion of the surface and having a thermal decomposition temperature equal to or less than 600 C.; and a rubber matrix.

The invention relates to compositions comprising a rubber-modified monovinylaromatic polymer comprising 70 wt % or more of a monovinylaromatic polymer matrix, based on the total weight of the rubber-modified monovinylaromatic polymer, and from 0.5 to 20 wt % of at least one rubber, and from 0.1 to 4.8 wt % of at least one biopolymer based on the total weight of the rubber-modified monovinylaromatic polymer wherein at least one biopolymer is selected from poly(-hydroxyacids) and/or polyhydroxyalkanoates, and any combination thereof; and from 0.1 to 6.0 wt % of a plasticizer being selected from a mineral oil and/or polyisobutene as based on the total weight of the composition. The invention also relates to articles made from these compositions.

An object of the present disclosure is to provide a rubber composition having satisfactorily low hysteresis loss, while maintaining high wear resistance. In order to achieve the object, a rubber composition contains: a rubber component having diene-based rubber therein; and a tetrazine compound.

Provided is a rubber composition that can improve the on-ice performance of a rubber article such as a tire while maintaining the wear resistance of the rubber article at a good level. The rubber composition contains a rubber component and fibrous or flat particles, where the particles form a plurality of aggregates in the rubber composition, and a proportion of aggregate having an aggregation diameter of 10 m or more and 1000 m or less is 70% or more among the plurality of aggregates.

The present invention has as its object the provision of a production process of a rubber composition containing a modified conjugated diene-based polymer, which can provide a rubber composition in which processability is excellent, and a filling agent, when contained, has favorable dispersibility therein.

The production process of a rubber composition according to the present invention includes: a first step of kneading a modified conjugated diene-based polymer that is obtained by polymerizing a monomer containing a conjugated diene compound and has at least one nitrogen-containing functional group selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group and groups in which these amino groups have been converted into an onium group, and a basic compound having an acid dissociation constant of 8.0 or more; and a second step of kneading the kneaded product obtained in the first step and a cross-linking agent.

The present invention relates to a curable resin composition comprising a polyol (A) having an average hydroxyl value of 200 to 1500 mg KOH/g, a polyisocyanate (B), and polymer fine particles (C), and a curable resin composition comprising a polyol (A), a polyisocyanate (B), and polymer fine particles (C), wherein the polyol (A) comprises a polyester polyol (a2) as an essential component, and the amount of the polyester polyol (a2) is not less than 20 parts by mass per 100 parts by mass of the polyol (A).

Provided in the present invention is a rubber composition for tires which is improved in a dispersibility of silica in a rubber blended with a large amount of silica having so far made it difficult to be kneaded with the rubber and which makes it possible to carry out simultaneously using silica having a large particle diameter and blending a large amount of silica. Used in the present invention is a rubber composition for tires comprising a natural rubber and/or diene base rubber component, a glycerin fatty acid ester composition containing glycerin fatty acid monoester, and silica, wherein a BET specific surface area of the silica is 100 m.sup.2/g or more and 130 m.sup.2/g or less, and the rubber composition for tires contains 80 parts by mass or more of the silica based on 100 parts by mass of the rubber component. A tire produced by using the above rubber composition for tires has made it possible to allow a WET performance and a gripping performance to be consistent with an abrasion resistance and has made it possible as well to secure a processability in production by a reduction in a viscosity.

A tire is provided with an external sidewall, said external sidewall comprising at least one elastomeric composition based on: (a) an elastomeric matrix comprising at least one diene elastomer, (b) a crosslinking system, and (c) at least one polymer incompatible with the elastomeric matrix. A process for the preparation of an elastomeric composition for an external sidewall is also disclosed.