Mitsui Chemicals, Inc.

Ryouichi Seki

Koju Okazaki

Masatoshi Takagi

Akinori Ryu

Kuniaki Kawabe

Kouichi Kizu

Mai Kurihara

Kazuki Fujii

Toshiyuki Itou

Shiro Nakatsuka

Michio Tsugawa

Takazou Katou

Kazutoshi Fujihara

Masako Takamatsu

A composition for optical materials of the present invention includes a polyolefin (A) obtained by (co)polymerizing at least one kind of olefin selected from &#x3b1;-olefins having 3 to 20 carbon atoms and a photochromic compound (B).

Composition for optical material and use of same

A resin fine powder which consists of a 4-methyl-1-pentene polymer that exhibits a limiting viscosity [&#x3b7;] of 1.0&#xd7;10to less than 3.0 dl/g as determined in decalin at 135&#xb0; C. and which has a median particle diameter [D] of 1.0&#xd7;10to 5.0&#xd7;10 &#x3bc;m; and a composition which comprises the resin fine powder and at least one sinterable powder selected from the group consisting of metal powders and ceramic powders.

Resin fine powder consisting of 4-methyl-1-pentene polymer, composition containing same, and process for production thereof

A cyclic olefin polymer composition comprising: [A] a specific cyclic olefin polymer having a softening temperature (TMA) of 120 to 300&#xb0; C.; and [B] a specific cyclic olefin polymer having a glass transition temperature (Tg) of 50&#xb0; C. or lower, wherein the absolute value of the difference between n[A] and n[B] is 0.014 or less in which n[B] represents a refractive index of the cyclic olefin polymer [B] and n[A] represent that of the cyclic olefin polymer [A], and the component [A] is contained in an amount of 50 to 95 parts by weight and the component [B] is contained in an amount of 5 to 50 parts by weight (provided that the total amount of the components [A] and [B] is defined as 100 parts by weight).

Cyclic olefin polymer composition, use thereof, and cyclic olefin polymer

A single layer film containing at least one anionic hydrophilic group selected from a sulfonic acid group, a carboxyl group and a phosphate group, wherein an anion concentration ratio (Sa/Da) of an anion concentration at a surface (Sa) to an anion concentration at a deep part (Da) is 1.1 or more. The single layer film is a copolymer prepared by polymerizing a composition containing a compound (I) represented by the general formula (1) ([X]s[M1]l[M2]m (1)) and a compound (II) having two or more (meth)acryloyl groups in a molecule at a molar ratio of 15:1 to 1:30 and having a water contact angle of 30&#xb0; or less. Such a single layer film has high hydrophilicity and surface hardness and is excellent in antifogging property, antifouling property and antistatic property, thus is useful as an antifogging material, an antifouling material, an antistatic material and a multilayer body.

Single layer film and hydrophilic material comprising the same

Organic polymers having water contact angles of 20&deg; or smaller, preferably 7&deg; or smaller and equipped with both high wettability and high transparency. The organic polymers may contain as partial structures polar structures of about 3 debyes or higher in dipole moment and are available especially from polymerization of polymerizable compounds having alkylene(thio)urea structures.

Organic polymers and novel polymerizable compounds

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Ichihara, Japan

Ryouichi Seki