Provided herein are multimodal elastomer compositions comprising a first polymer fraction and a second polymer fraction, and methods for making such compositions. The elastomer compositions are preferably ethylene, -olefin, copolymers or ethylene, -olefin, polyene terpolymers. The elastomer compositions have high Mooney viscosity, thereby providing for improved elastomeric properties in compounds and other articles formed from the elastomer compositions. Surprisingly, the high Mooney viscosity compositions exhibit a much lower than expected viscosity when formulated into elastomer compounds. Thus, the processing detriments typically associated with high Mooney viscosity elastomers are minimized through the use of the elastomer compositions, and methods for making them, disclosed herein.

Provided herein are multimodal elastomer compositions comprising a first polymer fraction and a second polymer fraction, and methods for making such compositions. The elastomer compositions are preferably ethylene, -olefin, copolymers or ethylene, -olefin, polyene terpolymers. The elastomer compositions have high Mooney viscosity, thereby providing for improved elastomeric properties in compounds and other articles formed from the elastomer compositions. Surprisingly, the high Mooney viscosity compositions exhibit a much lower than expected viscosity when formulated into elastomer compounds. Thus, the processing detriments typically associated with high Mooney viscosity elastomers are minimized through the use of the elastomer compositions, and methods for making them, disclosed herein.

Provided herein are multimodal elastomer compositions comprising a first polymer fraction and a second polymer fraction, and methods for making such compositions. The elastomer compositions are preferably ethylene, -olefin, copolymers or ethylene, -olefin, polyene terpolymers. The elastomer compositions have high Mooney viscosity, thereby providing for improved elastomeric properties in compounds and other articles formed from the elastomer compositions. Surprisingly, the high Mooney viscosity compositions exhibit a much lower than expected viscosity when formulated into elastomer compounds. Thus, the processing detriments typically associated with high Mooney viscosity elastomers are minimized through the use of the elastomer compositions, and methods for making them, disclosed herein.

The invention relates to novel and improved halogen-free flame retardant compounds having the structure of Formula (I): wherein: R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1-C.sub.6 alkyl, P(O)(OR.sup.3).sub.2, P(O)OR.sup.3R.sup.4, or P(O)R.sup.3.sub.2, wherein R.sup.3 and R.sup.4 are independently C.sub.1-C.sub.4 alkyl, C.sub.6-C.sub.12 aryl, C.sub.7-C.sub.15 aralkyl or C.sub.7-C.sub.15 alkaryl; or R.sup.1 and R.sup.2 taken together form an unsaturated cyclic ring, which is optionally substituted by an alkyl group; each k is independently an integer from 1 to 2; each X is independently oxygen (O) or sulphur (S); v is 0 or 1; each Y is independently C.sub.1-C.sub.4 alkylene, C.sub.6 arylene, C.sub.7-C.sub.15 aralkylene, C.sub.7-C.sub.15 alkarylene, oxygen (O), nitrogen (NR), wherein R is H or C.sub.1-C.sub.4 alkyl; n is 0, 1 or 2 with the proviso that n is 1 when Y is oxygen (O) or nitrogen (NR); each Z is independently C.sub.1-C.sub.4 alkylene, C.sub.6 arylene, C.sub.7-C.sub.15 aralkylene or C.sub.7-C.sub.15 is alkarylene; m is independently 0, 1 or 2; with the proviso that when Y is oxygen (O) or nitrogen (N), m cannot be 0; each Q is independently C.sub.1-C.sub.4 alkylene; t is an integer from 1 to 2; W is oxygen (O) or sulphur (S). The compounds are particularly suited as flame retardant additives for thermoplastic polyesters.

The invention relates to novel and improved halogen-free flame retardant compounds having the structure of Formula (I): wherein: R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1-C.sub.6 alkyl, P(O)(OR.sup.3).sub.2, P(O)OR.sup.3R.sup.4, or P(O)R.sup.3.sub.2, wherein R.sup.3 and R.sup.4 are independently C.sub.1-C.sub.4 alkyl, C.sub.6-C.sub.12 aryl, C.sub.7-C.sub.15 aralkyl or C.sub.7-C.sub.15 alkaryl; or R.sup.1 and R.sup.2 taken together form an unsaturated cyclic ring, which is optionally substituted by an alkyl group; each k is independently an integer from 1 to 2; each X is independently oxygen (O) or sulphur (S); v is 0 or 1; each Y is independently C.sub.1-C.sub.4 alkylene, C.sub.6 arylene, C.sub.7-C.sub.15 aralkylene, C.sub.7-C.sub.15 alkarylene, oxygen (O), nitrogen (NR), wherein R is H or C.sub.1-C.sub.4 alkyl; n is 0, 1 or 2 with the proviso that n is 1 when Y is oxygen (O) or nitrogen (NR); each Z is independently C.sub.1-C.sub.4 alkylene, C.sub.6 arylene, C.sub.7-C.sub.15 aralkylene or C.sub.7-C.sub.15 is alkarylene; m is independently 0, 1 or 2; with the proviso that when Y is oxygen (O) or nitrogen (N), m cannot be 0; each Q is independently C.sub.1-C.sub.4 alkylene; t is an integer from 1 to 2; W is oxygen (O) or sulphur (S). The compounds are particularly suited as flame retardant additives for thermoplastic polyesters.

The invention relates to novel and improved halogen-free flame retardant compounds having the structure of Formula (I): wherein: R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1-C.sub.6 alkyl, P(O)(OR.sup.3).sub.2, P(O)OR.sup.3R.sup.4, or P(O)R.sup.3.sub.2, wherein R.sup.3 and R.sup.4 are independently C.sub.1-C.sub.4 alkyl, C.sub.6-C.sub.12 aryl, C.sub.7-C.sub.15 aralkyl or C.sub.7-C.sub.15 alkaryl; or R.sup.1 and R.sup.2 taken together form an unsaturated cyclic ring, which is optionally substituted by an alkyl group; each k is independently an integer from 1 to 2; each X is independently oxygen (O) or sulphur (S); v is 0 or 1; each Y is independently C.sub.1-C.sub.4 alkylene, C.sub.6 arylene, C.sub.7-C.sub.15 aralkylene, C.sub.7-C.sub.15 alkarylene, oxygen (O), nitrogen (NR), wherein R is H or C.sub.1-C.sub.4 alkyl; n is 0, 1 or 2 with the proviso that n is 1 when Y is oxygen (O) or nitrogen (NR); each Z is independently C.sub.1-C.sub.4 alkylene, C.sub.6 arylene, C.sub.7-C.sub.15 aralkylene or C.sub.7-C.sub.15 is alkarylene; m is independently 0, 1 or 2; with the proviso that when Y is oxygen (O) or nitrogen (N), m cannot be 0; each Q is independently C.sub.1-C.sub.4 alkylene; t is an integer from 1 to 2; W is oxygen (O) or sulphur (S). The compounds are particularly suited as flame retardant additives for thermoplastic polyesters.

The present invention relates to a thermosetting resin composition. The composition comprises from about 20 wt. % to about 70 wt. % of a thermosetting resin, from about 1 wt. % to about 30 wt. % of a curing agent, from about 0 wt. % to about 10 wt. % of an accelerant, a tungsten compound, and an inorganic filler. A prepreg may be prepared in an impregnation manner or a coating product may be prepared in a coating manner. The composition may decrease the thermal expansion coefficient of laminates and may effectively block UV light and decrease the light transmissivity.

The present invention relates to a thermosetting resin composition. The composition comprises from about 20 wt. % to about 70 wt. % of a thermosetting resin, from about 1 wt. % to about 30 wt. % of a curing agent, from about 0 wt. % to about 10 wt. % of an accelerant, a tungsten compound, and an inorganic filler. A prepreg may be prepared in an impregnation manner or a coating product may be prepared in a coating manner. The composition may decrease the thermal expansion coefficient of laminates and may effectively block UV light and decrease the light transmissivity.

The present invention relates to a thermosetting resin composition. The composition comprises from about 20 wt. % to about 70 wt. % of a thermosetting resin, from about 1 wt. % to about 30 wt. % of a curing agent, from about 0 wt. % to about 10 wt. % of an accelerant, a tungsten compound, and an inorganic filler. A prepreg may be prepared in an impregnation manner or a coating product may be prepared in a coating manner. The composition may decrease the thermal expansion coefficient of laminates and may effectively block UV light and decrease the light transmissivity.

Provided are: a rubber composition for treads which contains a diene rubber in the rubber component and can simultaneously achieve blowing resistance during dry running, wet grip performance and abrasion resistance; and a pneumatic tire including a tread formed from the rubber composition for treads. The rubber composition contains: a diene rubber including styrene-butadiene rubber; zinc dithiophosphate; an inorganic filler including at least one selected from the group consisting of: a compound of the formula: mM.xSiO.sub.y.zH.sub.2O wherein M represents at least one metal selected from the group consisting of Al, Mg, Ti, Ca, and Zr, or an oxide or hydroxide of the metal, m represents an integer of 1-5, x represents an integer of 0-10, y represents an integer of 2-5, and z represents an integer of 0-10; magnesium sulfate; and silicon carbide, and having a BET value of 5-120 m.sup.2/g and a linseed oil absorption of 30-80 mL/100 g; and sulfur, wherein, per 100 parts by mass of the diene rubber, there are 0.2-15 parts by mass of the zinc dithiophosphate, 1-70 parts by mass of the inorganic filler, and less than 2.5 parts by mass of zinc oxide.