This invention provides novel carbon black composition comprising of at least 5 one first carbon black, filler1, with iodine number in the range of about 25 to 160 mg/g, nitrogen surface area (NSA) in the range of 20 m.sup.2/g to 150 m.sup.2/g, with at least one second carbon black, filler 2, preferably, with iodine number in the range of 160 mg/g to 300 mg/g, nitrogen surface area (NSA) in the range of 160 m.sup.2/g to 300 m.sup.2/g oil absorption number (OAN) in the range of 50 10 ml/100 g to 120 ml/100 g, having synergistically enhanced distribution of width of aggregate size ΔD50 and elastomer compounds of natural rubber or synthetic rubbers or their predefined mixtures comprising said novel carbon black composition with improved properties such as tensile strength, elongation at break, tear strength, cut growth etc. along with improvement of the aesthetic 15 and colour properties of the elastomer compounds, such as, L* value etc.

This invention provides novel carbon black composition comprising of at least 5 one first carbon black, filler1, with iodine number in the range of about 25 to 160 mg/g, nitrogen surface area (NSA) in the range of 20 m.sup.2/g to 150 m.sup.2/g, with at least one second carbon black, filler 2, preferably, with iodine number in the range of 160 mg/g to 300 mg/g, nitrogen surface area (NSA) in the range of 160 m.sup.2/g to 300 m.sup.2/g oil absorption number (OAN) in the range of 50 10 ml/100 g to 120 ml/100 g, having synergistically enhanced distribution of width of aggregate size ΔD50 and elastomer compounds of natural rubber or synthetic rubbers or their predefined mixtures comprising said novel carbon black composition with improved properties such as tensile strength, elongation at break, tear strength, cut growth etc. along with improvement of the aesthetic 15 and colour properties of the elastomer compounds, such as, L* value etc.

Provided are a rubber composition which provides a self-healing rubber with improved strength and wet grip performance, and a pneumatic tire including the rubber composition. The present disclosure relates to a rubber composition containing a rubber component having a functional group containing a cationic functional group and/or an anionic functional group, a filler capable of generating a charge paired with the functional group, and sulfur.

A resin composition for a refrigerant-transporting hose contains a thermoplastic resin and an elastomer, the thermoplastic resin and the elastomer forming a sea-island structure of a matrix of the thermoplastic resin and a domain of the elastomer, the resin composition having a P(O.sub.2), an M10, and a P(H.sub.2O) satisfying2: 0 < P(O.sub.2) x M10 ≤ 150 and log(P(H.sub.2O)/P(O.sub.2)) ≤ 0.9, where the P(O.sub.2) is an oxygen permeability coefficient [cm.Math.cm.sup.3/(cm.sup.2.Math.s.Math.cmHg)] at a temperature of 21° C. and a relative humidity of 50%, the M10 is a 10% modulus [MPa] at a temperature of 25° C., and the P(H.sub.2O) is a water vapor permeability coefficient [cm.Math.cm.sup.3/(cm.sup.2.Math.s.Math.cmHg)] at a temperature of 60° C. and a relative humidity of 100%.

A rubber compound for the preparation of portions of pneumatic tyres comprising a cross-linking unsaturated chain polymer base, a filler system and a vulcanization system. The filler system comprises (a) a first carbon black having a surface area less than or equal to 170 m.sup.2/gr in a quantity greater than or equal to 25 phr; (b) a second carbon black having a surface area greater than or equal to 250 m.sup.2/gr in a quantity such that the ratio between the quantity of the first carbon black and the quantity of the second carbon black is greater than or equal to 3 and less than or equal to 10; (c) a carbon black dispersing agent in a quantity of less than or equal to 1 phr.

A rubber compound for the preparation of portions of pneumatic tyres comprising a cross-linking unsaturated chain polymer base, a filler system and a vulcanization system. The filler system comprises (a) a first carbon black having a surface area less than or equal to 170 m.sup.2/gr in a quantity greater than or equal to 25 phr; (b) a second carbon black having a surface area greater than or equal to 250 m.sup.2/gr in a quantity such that the ratio between the quantity of the first carbon black and the quantity of the second carbon black is greater than or equal to 3 and less than or equal to 10; (c) a carbon black dispersing agent in a quantity of less than or equal to 1 phr.

An electroconductive elastic body includes: a cross-linked product of a first ionic electro-conductive rubber, a cross-linked product of a second ionic electro-conductive rubber, and at least one of a fatty acid and a fatty acid metal salt; wherein the electroconductive elastic body has a matrix that includes the cross-linked product of the first ionic electro-conductive rubber, and a domain that includes the cross-linked product of the second ionic electro-conductive rubber; the cross-linked product of the second ionic electro-conductive rubber includes a polyether skeleton; an electrical resistance of the domain is lower than an electrical resistance of the matrix; in a waveform separation profile of the elastic body as obtained by a small-angle X-ray scattering method, A2 and A1 satisfy a relationship expressed by the following expression (1):
0.005≤(A2×C2/A1×C1)≤0.030  (1).

A composition includes an epoxy-based curable adhesive having at least one an epoxy resin modified acrylonitrile-butadiene copolymer and at least one thermoplastic elastomer. The at least one thermoplastic elastomer is present in the curable adhesive as a penetrating polymer network. Further, an expandable article is composed of the composition, a reinforcing element includes a support and an expandable article, a method for reinforces cavities of structural components, and the composition is used as a shape memory material.

A composition includes an epoxy-based curable adhesive having at least one an epoxy resin modified acrylonitrile-butadiene copolymer and at least one thermoplastic elastomer. The at least one thermoplastic elastomer is present in the curable adhesive as a penetrating polymer network. Further, an expandable article is composed of the composition, a reinforcing element includes a support and an expandable article, a method for reinforces cavities of structural components, and the composition is used as a shape memory material.

The invention relates to a hollow glass microsphere and polymer composite having enhanced viscoelastic and rheological properties.