A plasticizer for resins and/or elastomers, the plasticizer containing a group that changes its interaction with respect to an antifreeze with changes in temperature, the group having a lower critical solution temperature of −20° C. to 20° C.

Disclosed is a composition that can impart a drip preventing effect together with an excellent heat release suppressing effect to a resin, and that enables the resin to exhibit an excellent color tone, by being mixed with the resin. The composition includes a component (A) and/or a component (B), and a component (C). It is preferable that the composition contains the component (C) in an amount of 0.1 to 50 parts by mass relative to 100 parts by mass of a total of the components (A) and (B). The component (A) is a (poly)phosphate compound represented by General Formula (1).

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The component (B) is a (poly)phosphate compound represented by General Formula (3).

##STR00002##

The component (C) is a hydrous magnesium silicate.

Provided is a polyurethane gel composition containing A and B below. Here, A represents a polyurethane obtained by reaction of (a) a hydrogenated polybutadiene having isocyanate groups at the terminals and (b) a glycol represented by HO—R.sub.3—OH (wherein R.sub.3 represents a linear or branched C2 to C6 alkylene group optionally having an ether bond), or A represents a polyurethane obtained by reaction of (c) a hydrogenated polybutadiene having hydroxyl groups at the terminals, (d) a diisocyanate compound, and the (b) glycol represented by HO—R.sub.3—OH (wherein R.sub.3 represents a linear or branched C2 to C6 alkylene group optionally having an ether bond), and B represents an oil agent. The polyurethane gel composition of the present invention is particularly useful as a raw material for cosmetics since a film of an oil-soluble gel obtained using the polyurethane gel composition is exceptionally excellent in any point of transparency, high gloss, elasticity, and resilience.

The present invention provides a rubber composition capable of giving cured products excellent in durability and vibration insulating properties. The present invention also provides a cured product of the composition, and a rubber vibration insulator using the cured product. The rubber composition includes a solid rubber (A), a liquid diene rubber (B), a silane coupling agent (C), and silica (D) having a BET specific surface area of 15 to 250 m.sup.2/g.

The invention provides a peroxide crosslinkable rubber composition including a hydrogenated nitrile rubber that is enhanced in scorch stability without deterioration in superior characteristics of crosslinked products of the composition. The invention also provides a crosslinked product of such a rubber composition. The rubber composition includes 100 parts by mass of a hydrogenated nitrile rubber (A), 5 to 100 parts by mass of a filler (B), 1 to 10 parts by mass of an organic peroxide (C), and 1 to 20 parts by mass of a liquid diene rubber (D) having a polystyrene-equivalent weight average molecular weight of 3,000 to 120,000 as measured by gel permeation chromatography (GPC).

A method of sealing a service penetration in a structure, the method comprising applying a sealant composition around the service penetration on an exterior surface of the structure, wherein the penetration sealant composition comprises: from 5 to 40 wt % of a filler; from 20 to 80 wt % of a silicone polymer; and from 10 to 60 wt % of fire retardant compound.

A composition comprising a conductive polymer, and a compound having an OH group and further having a butoxy group.

A dispensable grease sealant includes a base component in an amount of 50 wt % or more, based on a total weight of the sealant, and a thickener. The base component is selected from a group including a silicone wax, a liquid rubber, and a combination thereof.

A low-dielectric rubber resin material and a low-dielectric metal substrate are provided. The rubber resin material includes a low-dielectric rubber resin composition and inorganic fillers. The low-dielectric rubber resin composition includes: 5 wt % to 40 wt % of a liquid rubber, 20 wt % to 70 wt % of a polyphenylene ether resin, 5 wt % to 30 wt % of a bismaleimide resin, and 20 wt % to 45 wt % of a crosslinker. A molecular weight of the liquid rubber ranges from 800 g/mol to 6000 g/mol. An iodine value of the liquid rubber ranges from 30 g/100 g to 60 g/100 g.

A sealant material composition forming a sealant layer of a pneumatic tire provided with the sealant layer on a tire inner surface is prepared by blending from 1 part by mass to 40 parts by mass of a crosslinking aid and from 50 parts by mass to 400 parts by mass of a liquid isobutylene-isoprene copolymer having a molecular weight from 10000 to 60000 per 100 parts by mass of a halogenated butyl rubber.