Jsr Corporation

Junji Koujina

Takuya Sano

Kenji Hasegawa

Susumu Komiyama

Akio Aoyama

Akihiko Morikawa

Toshiyuki Hayakawa

Fumio Kurihara

Masaki Maeda

Masashi Shimakage

Hiroyuki Mizouchi

Katsuaki Morino

Seiji Morioka

Mamoru Hasegawa

Provided is a thermal storage medium composition which contains 100 parts by mass of a hydrogenated diene copolymer and 50 to 4000 parts by mass of a linear paraffin compound having 12 to 50 carbon atoms, where the hydrogenated diene copolymer is a conjugated diene copolymer that is obtained by hydrogenating a block copolymer which includes a polymer block (A) that contains structural units (a-1) derived from a first conjugated diene compound and has a vinyl bond content of not more than 20 mol %, and a polymer block (B) that contains structural units (b-1) derived from a second conjugated diene compound and has a vinyl bond content of 30 to 95 mol %, the hydrogenation ratio with respect to the double bonds derived from the conjugated diene compounds being not less than 90%.

Thermal storage medium composition and thermal storage medium

Objects of the present invention are to provide a method for molding polymers to be able to mold products each of which has an outer shape transferred accurately from the shape of the inside of a mold, exhibits high dimensional accuracy and is uniform in the thickness of its surface skin layer and the expansion ratio in its foamed inside. A molten polymeris injected into a cavityand simultaneously gas is pressed to the inside of the molten polymerto contact the polymer close to the surface of the mold, and then gas is exhausted while maintaining the shape inside the mold, to thereby mold a polymer formed product in which a surface skin layerand a foamed insidehaving cushioning property are formed in one piece.

Method for formation of polymer

The invention relates to a process and apparatus for producing a foamed body that allows simple control of the dimensions and gives foamed body with the desired dimensions in a stable manner. According to the invention, Pis pressure at the point where pressure in the die begins to fall after casting a molding material containing no blowing agent into the die, &#x394;Pis the amount of reduction in pressure in the die from P, Pis the minimum pressure between the time of casting a molding material containing a blowing agent into the die completely cast and the time of beginning to increase the pressure in the die, &#x394;Pis the amount of increase in pressure in the die from P, and &#x394;Pis the sum of &#x394;Pand &#x394;P. A blowing agent and a molding material are cast into a pressure sensor-equipped die having a guide pin exposed on the inner wall of the die and in direct contact with the molding material and a pressure sensor which detects pressure inside the die via the guide pin, and &#x394;Pis controlled based on the correlation between the dimensional change and &#x394;Pfor a previously obtained foamed body, in order to obtain foamed body with the desired dimensions.

Method for producing foam

Growing community of inventors

Tokyo, Japan

Junji Koujina