Methods for treating a cured inner liner as well as treated, cured inner liners resulting from such methods are disclosed. Also disclosed are tires containing the treated inner liners. The methods include treatment of the lower surface of inner liner surface with a rubber-containing liquid to produce a rubber-containing film thereupon.

A thermally expandable composition, including (a) at least one polymer P, cross-linkable by a free-radical initiator, and (b) at least one solid butyl rubber BRu, and (c) at least one free-radical initiator, and (d) at least one blowing agent, and (e) at least one tackifier TA, whereby the cured expanded composition has a volume increase compared to the uncured composition of less than 1300%. The thermally expandable composition is able to provide good expansion behaviour and good adhesion on metal surfaces and is especially suitable for baffle and/or reinforcement elements, e.g. in automotive manufacturing.

Provided is a method for producing a rubber composition that includes a rubber component (A) including natural rubber, at least one filler (B) selected from an inorganic filler and carbon black, and a monohydrazide compound (C) supported on a solid. The monohydrazide compound (C) is represented by general formula (I): R—CONHNH.sub.2, where R represents an alkyl group having from 1 to 30 carbon atoms, a cycloalkyl group having from 3 to 30 carbon atoms, or an aryl group. The method comprises compounding in an optional preliminary compounding stage and a plurality of compounding stages, and adding the monohydrazide compound (C) supported on the solid and kneading in the preliminary compounding stage and/or a first compounding stage. Also provided is a rubber composition produced with this method.

The present invention relates to a rubber composition containing a rubber component, a eutectic compound, metal oxide, and a peroxide-based crosslinking agent, and a production method thereof. The rubber composition in which the blending amount of metal oxide such as zinc oxide is largely reduced is obtained, which may have the same vulcanization characteristics and vulcanized-rubber physical properties as those of a rubber composition in which a large amount of metal oxide is blended, while considering the environment.

Methods for treating a cured inner liner as well as treated, cured inner liners resulting from such methods are disclosed. Also disclosed are tires containing the treated inner liners. The methods include treatment of the lower surface of inner liner surface with a rubber-containing liquid to produce a rubber-containing film thereupon.

The invention relates to the field of modified diene-containing (co)polymers, in particular, to modified butadiene-styrene copolymers that can be used as flame retardants for polymer compositions based on expandable polystyrene. In particular, the invention relates to a modified diene-containing (co)polymer, a method for preparing thereof and the use of the same as a flame retardant for expandable polystyrene. The modified diene-containing (co)polymer according to the invention is characterized by a high heat resistance, in particular, a 5% weight loss temperature of at least 180° C., a molecular weight of at least 1500 g/mol, and a halogen content of at least 35 wt. % based on the total weight of the (co)polymer.

Methods for treating a cured inner liner as well as treated, cured inner liners resulting from such methods are disclosed. Also disclosed are tires containing the treated inner liners. The methods include treatment of the lower surface of inner liner surface with a rubber-containing liquid to produce a rubber-containing film thereupon.

Provided is a method for producing a rubber composition that includes a rubber component (A) including natural rubber, at least one filler (B) selected from an inorganic filler and carbon black, and a monohydrazide compound (C) supported on a solid. The monohydrazide compound (C) is represented by general formula (I): RCONHNH.sub.2, where R represents an alkyl group having from 1 to 30 carbon atoms, a cycloalkyl group having from 3 to 30 carbon atoms, or an aryl group. The method comprises compounding in an optional preliminary compounding stage and a plurality of compounding stages, and adding the monohydrazide compound (C) supported on the solid and kneading in the preliminary compounding stage and/or a first compounding stage. Also provided is a rubber composition produced with this method.

The invention relates to the field of modified diene-containing (co)polymers, in particular, to modified butadiene-styrene copolymers that can be used as flame retardants for polymer compositions based on expandable polystyrene. In particular, the invention relates to a modified diene-containing (co)polymer, a method for preparing thereof and the use of the same as a flame retardant for expandable polystyrene. The modified diene-containing (co)polymer according to the invention is characterized by a high heat resistance, in particular, a 5% weight loss temperature of at least 180 C., a molecular weight of at least 1500 g/mol, and a halogen content of at least 35 wt. % based on the total weight of the (co)polymer.