Sekisui Chemical Co., Ltd.

Sumitomo Rubber Industries Limited

Seikisui Chemicals Co., Ltd.

Toshio Tada

Katsunori Toyoshima

Juichi Fukatani

Yohei Nishimura

Tsuyoshi Hasegawa

Masaki Matsudo

Takeharu Morita

Tadahiko Yoshioka

Shinya Nakano

Youhei Nishimura

Yohei Sekisui Chemical Co Ltd Nishimura

Katsunori Sekisui Chemical Co Ltd Toyoshima

A test method of accurately evaluating wear resistance performance of a rubber material when used as a tread rubber of a tire, comprises the steps of: preparing a test piece of the rubber material having a ground contact surface extending in a circumferential direction; abrading the ground contact surface by rolling the test piece on a running surface of a wear testing machine at a slip ratio of not more than 3.5%; and evaluating the wear resistance performance of the test piece by comparing the amount of wear of the test piece with a predetermined threshold value.

Test method for wear resistance performance, method of manufacturing tread rubber, method of manufacturing tire, and tire

The present invention provides a tire rubber composition that makes it possible to suppress discoloration of tires, and a pneumatic tire formed from the rubber composition. The present invention relates to a tire rubber composition containing a bluing agent.

Tire rubber composition and pneumatic tire

It is an object of the invention to provide a separation method of an adherend capable of easily and reliably separating an adherend stuck using an adhesive, a method for recovering an electronic part from an electronic part laminate, and a separation method of laminate glass. The invention provides a separation method of an adherend, which is a method of separating an adherend stuck by using an adhesive, and comprises the steps of: air-tightly sealing the adherend together with a fluid being a gas at a normal temperature and normal pressure in a pressure resistant container, making the inside of the pressure resistant container in a high pressure state, and releasing the pressure of the inside of the pressure resistant container.

Method for releasing adhered article

A laminated glass and an interlayer film for laminated glasses are provided, which have the high performance for mitigating the impact given externally and, particularly in the case of using it as glass for vehicles, and which have the high performance for mitigating the impact when a person's head comes into collision with the glass due to the occurrence of a personal accident. Also provided is a laminated glass, wherein at least an interlayer film for laminated glasses and a glass sheet are laminated and unified, Head Injury Criteria (HIC) values, measured according to regulations of European Enhanced Vehicle-safety Committee; EEVC/WG 17, being 1,000 or lower.

Laminated glass and interlayer film for laminated glasses

It is an object of the present invention to provide a method of producing a polyvinyl acetal resin by which a polyvinyl acetal resin having a high acetalization degree can be produced even in a solid catalyst system, a polyvinyl butyral resin produced by the above-mentioned production method of a polyvinyl acetal resin, and a method of producing an esterified polyvinyl alcohol resin by which the esterification can be performed at high efficiency even in a solid catalyst system. The present invention is a method of producing a polyvinyl acetal resin, wherein a solution or a suspension containing a polyvinyl alcohol resin and a carbonyl compound is pressurized in the presence of a solid catalyst.

Process for producing polyvinyl acetal resin, polyvinyl butyral resin, and process for producing esterified polyvinyl alcohol resin

It is an object of the invention to provide a method for producing a modified polymer compound and a production apparatus of a modified polymer capable of producing a modified polymer compound with a high purity in a short time, and such a modified polymer compound. The invention provides a method for producing a modified polymer compound, which comprises chemically modifying a polymer compound in a supercritical fluid or a high temperature and high pressure fluid, said modified polymer compound being composed of monomer units obtainable by chemically modifying part of or all of monomer units composed of the polymer compound before modification reaction.

Process for producing modified polymer, apparatus for producing modified polymer, and modified polymer

It is an object of the present invention to provide a laminated glass and an interlayer film for laminated glasses, which have the high performance for mitigating the impact given externally and, particularly in the case of using it as glass for vehicles, have the high performance for mitigating the impact when head comes into collision with the glass due to the occurrence of a personal accident. The present invention is directed to a laminated glass, wherein at least an interlayer film for laminated glasses and a glass sheet are laminated and unified, Head Injury Criteria (HIC) values, measured according to regulations of European Enhanced Vehicle-safety Committee; EEVC/WG 17, being 1,000 or lower.

Laminated glass and intermediate film for laminated glass

This invention provides a method for producing a polymer alloy, a polymer alloy as well as a molded article, a transparent molded article and an optical film, which is obtainable by using the polymer alloy. The invention is a method for producing a polymer alloy, which comprises at least: a stepof mixing two or more resins incompatible with each other at ambient temperature and pressure with a solvent being in a liquid or gas state at ambient temperature and pressure; a stepof heating and applying pressure to said solvent into a high-temperature and high-pressure fluid or a supercritical fluid and mixing the solvent in this state; and, a stepof cooling the mixture obtained in said steprapidly to the glass transition temperature or less without releasing the pressure of the mixture.

Growing community of inventors

Mishima-gun, Japan

Toshio Tada