Asahi Kasei Kabushiki Kaisha

Asahi Kasei Chemicals Corporation

Kraton Polymers LLC

Noriko Yagi

Mika Horiuchi

Yasuhiro Kusanose

Masahiro Fujiwara

Hiroyuki Ichino

Takahiro Hisasue

Jeremie G Pichereau

Neil Riddle

A thermoplastic elastomer composition including:

Thermoplastic elastomer composition, plug body and container

A rubber composition is disclosed. The composition comprises a blend based on 100 parts by weight (phr) of diene elastomers: 5 to 95 phr of a first diene elastomer, 5 to 50 phr of a hydrogenated styrenic block copolymer (HSBC), 50 to 200 phr of a filler, up to 25 phr of a plasticizer. The HSBC has a melt flow ratio of 1.0 to 50.0 measured according to ASTM D-1238 at 230&#xb0; C. and 2.16 kg load, a Shore A hardness of 40 to 80 measured according to ASTM D-2240, a DMA peak tan delta temperature of 0&#xb0; C. to 40&#xb0; C. at 1 Hz measured according to ASTM D-4065, and an order-disorder transition temperature of 200&#xb0; C. to 300&#xb0; C. The composition does not comprise a resin, a plasticizer, or comprises a resin or a plasticizer in an amount of less than 20 phr.

Rubber composition and method for making thereof

The disclosure provides a film wherein an outer layer includes a polypropylene resin, an intermediate layer includes a polypropylene resin and a hydrogenated block copolymer (a), and an inner layer includes a polypropylene resin.

Film

A tube including a hydrogenated block copolymer (a), wherein the hydrogenated block copolymer (a) includes, in a molecule, a polymer block mainly including a conjugated diene compound (C), a polymer block mainly including a conjugated diene compound (B), and a polymer block mainly including a vinyl aromatic compound (S).

Tube using hydrogenated block copolymer

A polyolefin-based resin composition comprising:

Polyolefin-based resin composition, film, medical bag, and tube

This thermoplastic elastomer composition comprises: 100 parts by mass of a hydrogenated block copolymer (a); from 3 to 50 parts by mass of a polypropylene-based resin (b), from 5 to 100 parts by mass of a polyphenylene ether resin (c), and from 50 to 200 parts by mass of a non-aromatic softener (d), the hydrogenated block copolymer (a) is able to be formed by hydrogenating a block copolymer that comprises at least one polymer block A comprising a vinyl aromatic hydrocarbon compound monomer unit as a primary component and at least one polymer block B comprising a conjugated diene compound monomer unit as a primary component, and a weight average molecular weight of the hydrogenated block copolymer (a) is from 100,000 to 350,000.

Thermoplastic elastomer composition, stopper for medical container, and medical container

It is an object of the present invention to provide a hydrogenated block copolymer pellet, which has the ability to become a molded product that is excellent in transparency, flexibility, bleeding resistance, and low combustion ash content, without causing blocking among pellets. A hydrogenated block copolymer pellet having 100 parts by mass of a pellet molded product of hydrogenated block copolymer A and 0.01 to 1.5 parts by mass of a dusting agent of polyethylene powder B, wherein the hydrogenated block copolymer A has at least one polymeric block a mainly including a vinyl aromatic monomer unit and at least one polymeric block b mainly including a conjugated diene monomer unit, in which a total of a 1,2-bond content and a 3,4-bond content in the polymeric block b before hydrogenation is 40% to 90%, the hydrogenated block copolymer A has a hardness of 30&#xb0; to 67&#xb0;, a content of the polymeric block a in the hydrogenated block copolymer A is 5% to 30% by mass, and the polyethylene powder B has a number average molecular weight of 15,000 or less, an average particle diameter of 1 to 15 &#x3bc;m, and an angle of repose of 45&#xb0; to 70&#xb0;.

Growing community of inventors

Tokyo, Japan

Noriko Yagi