Mitsui Toatsu Chemicals, Incorporated

Mitsui Chemicals, Inc.

Masao Imai

Katsuyoshi Sasagawa

Yoshinobu Kanemura

Toshiyuki Suzuki

Kenichi Fujii

Atsuo Otsuji

Seiichi Kobayashi

Nobuya Kawauchi

Kenichi Sugimoto

Teruyuki Nagata

Keisuke Takuma

Nobuyuki Kajimoto

Mitsuo Nakamura

Rihoko Suzuki

Terunori Fujita

Koju Okazaki

Tohru Miura

Hiroshi Naruse

Masayasu Ishibashi

Osamu Kohgo

Hitoshi Koshida

Kenji Fujiwara

Tsuneyuki Ohkubo

Shinobu Aoki

Tetsuo Sakagawa

Takayuki Nakayama

Hiroshi Suwa

Tadashi Ohkuma

Tadashi Kobayashi

Hiroshi Takayanagi

Masatoshi Takagi

Yoichi Kawai

Nobuhiro Fukuda

Hidetoshi Hayashi

Katsumi Sekiguchi

Hiroshi Ozawa

Akio Karasawa

Yoshihisa Gotoh

Hitoshi Shimotori

Sachio Yokote

Tamotsu Asano

Akitoshi Igata

Shinichi Usugi

Masami Maki

Kanemitsu Miyama

Masahiro Enna

Kunio Nishihara

Tadashi Okuma

Eiji Senoue

Hideki Yamamoto

Shohei Nozaki

Eiichi Noda

Kozo Yasuda

Satoru Iwamori

Masaru Arai

Akio Hyugaji

Kimio Kanno

Rihiko Suzuki

A polymerizable composition including a compound represented by following General Formula (1): 

Polymerizable composition, and resin and optical part using the same

A method for producing an alkylated aromatic compound includes a step (i) of producing a reaction product (a1) containing the alkylated aromatic compound and water by the reaction of an aromatic compound, a ketone, and hydrogen using a metal component containing at least one metallic element of copper, nickel, cobalt, and rhenium and a solid acid substance; a step (ii) of forming a dehydrated product (a2) from at least a portion of the reaction product (a1) by removing at least a portion of the water in the reaction product (a1); and a step (iii) of producing a reaction product (a3) containing the alkylated aromatic compound by bringing at least a portion of the dehydrated product (a2) into contact with a solid acid substance.

Method for producing alkylated aromatic compound, method for producing cumene, and method for producing phenol

According to a process of the invention, a ketone, an aromatic compound and hydrogen as starting materials are reacted together in a single reaction step to produce an alkylaromatic compound in high yield. A process for producing phenols in the invention includes a step of performing the above alkylation process and does not increase the number of steps compared to the conventional cumene process. The process for producing alkylated aromatic compounds includes reacting an aromatic compound such as benzene, a ketone such as acetone and hydrogen in the presence of a solid acid substance, preferably a zeolite, and a silver-containing catalyst.

Process for producing alkylated aromatic compounds and process for producing phenols

A photopolymerizable composition comprising a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound is characterized by comprising (a) a bifunctional (meth)acrylic acid (thio)ester compound containing a sulfur atom in the molecule and (b) at least one of a (meth)acrylic acid ester compound represented by the general formula (1) or a bifunctional (meth)acrylic acid ester compound having a urethane linkage: 

Photopolymerizable composition and use thereof

Acrylic esters and use thereof

Acrylic ester compound usage thereof

Sulfur compound and use thereof

Dyed molded article

A sulfur-containing unsaturated carboxylate compound comprising a sulfur-containing substituent and at least two &agr;,&bgr;-unsaturated carboxylic acid residues, which are each attached to a secondary or tertiary carbon atom via an oxygen atom; a polymerizable composition comprising the sulfur-containing unsaturated carboxylate compound; a cured product prepared by polymerizing the polymerizable composition; an optical component consisting of the cured product; and novel intermediate compounds for preparation of the above carboxylate.

Sulfur-containing unsaturated carboxylate compound and its cured products

Thiol and sulfur-containing O-(meth)acrylate compounds and use thereof

A sulfur-containing (thio)ether (co)polymer comprising repetitive structural units represented by general formulas 1 and 2, and an optical element using the (co)polymer:

Sulfur-containing (thio)ether (co)polymer and a use thereof

A sulfur-containing O-(meth)acrylate compound of the following formula (1) is useful as a starting material for a resin composition used in optical applications such as a lens;

A sulfur-containing O-(meth)acrylate compound of the following formula (1) is useful as a starting material for a resin composition used in optical applications such as a lens; wherein R represents hydrogen atom or methyl group; l represents an integer from 1 to 3; B is ##STR1## when B is ##STR2## n is 2; m is 1 or 2; A is selected from the following groups: ##STR3## wherein m represents 1 or 2; each ring may be substituted by one or more alkyl, alkylthio or alkoxy groups having 1 or 2 carbon atoms; p and q are 0 or 1, while m is 1 when p is 1;

Disclosed are (1) an optical resin composition comprising Component A: a thiourethane prepolymer compound prepared by reacting a polythiol compound having at least 3 functional groups and an intramolecular sulfide bond, with a polyisocyanate compound in a molar ratio of --SH to --NCO ranging from 3.0 to 7.0; Component B: at least one (meth) acrylate compound having at least 2 functional groups; and Component C: a compound radically polymerizable with Components A and B, in 10 to 50% by weight, 35 to 70% by weight, and 5 to 30% by weight, respectively; (2) a preparation process for an optical resin by photopolymerization; (3) an optical resin; and (4) a prepolymer suitable for Component A. The composition is a novel, rapidly polymerizable composition for an optical resin. Furthermore, a resin prepared by curing the composition not only has a high refractive index and a high Abbe number, but also is excellent in transparency and optical homogeneity.

Optical lens and a process for preparing the lens

A sulfur-containing O-(meth)acrylate compound of the following formula (1) is useful as a starting material for a resin composition used in optical applications such as a lens; ##STR1## wherein R represents hydrogen atom or methyl group; 1 represents an integer from 1 to 3; B is ##STR2## n is 1 or 2, m is 1, 2 or 3 and A is selected from certain arylene, aralkylene, thioether, dithioether or thiopheneylene radicals.

Thiol and Sulfur-containing O-(meth) acrylate compounds and use thereof

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Kanagawa, Japan

Masao Imai