Teijin Cordley Limited

Rohm and Haas Electronic Materials Cmp Holdings, Inc.

Shogo Takahashi

Masahisa Mimura

George C Jacob

Koichi Yoshida

Henry Sanford-Crane

Katsumasa Kawabata

Shuiyuan Luo

Yosuke Takei

Shusuke Kitawaki

The porous polyurethane polishing pad includes a porous matrix having large pores that extend upward from a base surface and open to an upper surface. The large pores are interconnected with small pores. The porous matrix is a blend of two thermoplastic polymers. The first thermoplastic polyurethane has by molecular percent, 45 to 60 adipic acid, 10 to 30 MDI-ethylene glycol and 15 to 35 MDI and an Mn of 40,000 to 60,000 and a Mw of 125,000 to 175,000 and an Mw to Mn ratio of 2.5 to 4 The second thermoplastic polyurethane has by molecular percent, 40 to 50 adipic acid, 20 to 40 adipic acid butane diol, 5 to 20 MDI-ethylene glycol and 5 to 25 MDI and an Mn of 60,000 to 80,000 and a Mw of 125,000 to 175,000 and an Mw to Mn ratio of 1.5 to 3.

Thermoplastic poromeric polishing pad

A method for producing an artificial leather sheet includes (i) coating a solution including an elastic polymer (B) on a substrate layer for forming a composite layer on a surface of the substrate layer, wherein the substrate layer includes ultra fine fibers and an elastic polymer (A), and the substrate layer has ultra fine fiber naps on one surface, the fineness of the ultra fine fibers is 0.0001 to 0.05 dtex, the composite layer includes ultra fine fiber naps and an elastic polymer (B), the ultra fine fiber naps are connected to the fibers constituting the substrate layer, and the elastic polymer (B) is joined to the ultra fine fibers, (ii) pressing the surface of the sheet with an emboss roll for forming hills, and (iii) then coating the top portions of the hills with a solution consisting mainly of an elastic polymer (C).

Method for producing artificial leather sheet

A skin material for balls which is a sheet-form material comprising a base layer and formed on one side there of a coating layer made of a polymeric elastomer, characterized in that (1) the coating layer is composed of three layers (C-), (C-), and (C-) disposed in this order from the surface side, (2) the layer (C-) on the base layer side is made of a porous polymeric elastomer, (3) the layer (C-1) on the surface side is made of a polymeric elastomer containing a pressure-sensitive adhesive, and (4) the coating layer comprises one or more polymeric elastomers which have or do not have fine through-holes extending from the surface side to the base layer; and a ball having the skin material bonded to the surface. The skin material for ball-game balls brings about excellent wet gripping and is excellent also in wearing resistance and impact absorption.

Surface material for ball and ball

Growing community of inventors

Shimane, Japan

Shogo Takahashi