The present invention provides a buffer sheet composition including a thermosetting compound, which buffer sheet composition is used for producing a buffer sheet to be interposed between a heating member and an electronic component, when the electronic component is heated by the heating member so as to mount the electronic component on a substrate, as well as a buffer sheet including a thermosetting composition layer obtained by forming the buffer sheet composition into the form of a sheet.

A low molar mass polymeric hydrocarbon tackifier having a number average molar mass Mn of from 200 to 1,500 g/mol provides increased green tack stability over an extended period of time in rubber compounds.

A low molar mass polymeric hydrocarbon tackifier having a number average molar mass Mn of from 200 to 1,500 g/mol provides increased green tack stability over an extended period of time in rubber compounds.

Provided are a method for manufacturing a rubber composition for a tire and a method for manufacturing a tire including this manufacturing method for the rubber composition in the present invention, which are characterized by including the steps of: starting to knead a rubber component, a sulfur donor, and a sulfur atom-containing vulcanization accelerator together before kneading the rubber component with a filler; and then adding a filler to an obtained kneaded product and performing kneading at a kneading temperature of 120° C. or higher. According to the manufacturing methods of the present invention, a rubber composition for a tire and a tire which have good fracture property can be manufactured.

Provided are a method for manufacturing a rubber composition for a tire and a method for manufacturing a tire including this manufacturing method for the rubber composition in the present invention, which are characterized by including the steps of: starting to knead a rubber component, a sulfur donor, and a sulfur atom-containing vulcanization accelerator together before kneading the rubber component with a filler; and then adding a filler to an obtained kneaded product and performing kneading at a kneading temperature of 120° C. or higher. According to the manufacturing methods of the present invention, a rubber composition for a tire and a tire which have good fracture property can be manufactured.

A rubber compounding ingredient containing (A) a compound having a blocked isocyanate group and a hydrolyzable silyl group, such as an organosilicon compound having the following formula (1):

##STR00001##

wherein R.sup.1 is each independently an alkyl group having 1 to 8 carbon atoms, L is a divalent linking group, X is —O— or —NR.sup.2—, Z is a hydrogen atom or a monovalent organic group, R.sup.2 is a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a group capable of bonding to Z to form a ring structure, and m is an integer of 1 to 3.

A rubber compounding ingredient containing (A) a compound having a blocked isocyanate group and a hydrolyzable silyl group, such as an organosilicon compound having the following formula (1):

##STR00001##

wherein R.sup.1 is each independently an alkyl group having 1 to 8 carbon atoms, L is a divalent linking group, X is —O— or —NR.sup.2—, Z is a hydrogen atom or a monovalent organic group, R.sup.2 is a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a group capable of bonding to Z to form a ring structure, and m is an integer of 1 to 3.

Provided is a method for preparing a modified filler. The method includes in sequence providing an acidified aqueous slurry of an untreated inorganic filler which has not been previously dried; an emulsifier material; and a hydrophobating agent having the following structural formula (I): (I) R.sub.a-M-X.sub.(4-a) wherein: R is C.sub.6 to C.sub.22 alkyl, M is silicon, titanium or zirconium, X is OR′ or N halogen, R′ is C.sub.1 to C.sub.4 alkyl, and a is 1; washing and/or filtering the acidified aqueous slurry to obtain a modified filler, and, optionally, drying the modified filler. Polymeric compositions and articles also are provided.

Provided is a method for preparing a modified filler. The method includes in sequence providing an acidified aqueous slurry of an untreated inorganic filler which has not been previously dried; an emulsifier material; and a hydrophobating agent having the following structural formula (I): (I) R.sub.a-M-X.sub.(4-a) wherein: R is C.sub.6 to C.sub.22 alkyl, M is silicon, titanium or zirconium, X is OR′ or N halogen, R′ is C.sub.1 to C.sub.4 alkyl, and a is 1; washing and/or filtering the acidified aqueous slurry to obtain a modified filler, and, optionally, drying the modified filler. Polymeric compositions and articles also are provided.

The present disclosure is to provide a vibration damping steel sheet having improved vibration damping performance. According to the present disclosure, rubber particles are dispersed in a polymer resin to form a vibration damping layer, thereby providing a vibration damping steel sheet having improved vibration damping performance.