中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

350 records (took 0.026 seconds)

    3.
    发明专利
    未知

    公开(公告)号：DE69028329T2

    公开(公告)日：1997-03-20

    申请号：DE69028329

    申请日：1990-03-01

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： SUZUKI TOSHIYUKI ,  SASAGAWA KATSUYOSHI ,  IMAI MASAO ,  KANEMURA YOSHINOBU

    IPC: C07C333/04 ,  C07D251/34 ,  C07D493/10 ,  C08F212/14 ,  C08F212/34 ,  G02B1/04 ,  G11B7/253 ,  C09D125/18 ,  C07C271/06 ,  G03C11/08 ,  G11B7/24

    Abstract: The present invention relates to a high surface hardness transparent resin having excellent scratch resistance, heat resistance and chemical resistance, a glazing material, a protective cover for display devices, an optical lens and a hard coat material comprising the aforesaid resin, and a novel polymerizable monomer which is useful as a raw material of the above-mentioned resin. The monomer is represented by the formula (I) (wherein R is an aliphatic residue having or not having an halogen atom, an oxygen atom, an alicyclic ring, a heterocyclic ring or an aromatic ring, an alicyclic residue, or a heterocyclic residue, n is an interger of 1 to 4, when n = 1 X is oxygen or sulfur, when n>/=2, X's are all oxygen or all sulfur, one X is oxygen while the other X or X's are sulfur, one X is sulfur while the other X or X's are oxygen, or two X's are oxygen while the other X's are sulfur). The aforesaid high surface hardness transparent resin comprises a crosslinked polymer prepared by copolymerizing a monomer (A) represented by the formula (I) and a monomer (B) having, in one molecule, m functional groups of at least one kind selected from the group consisting of CH2=CH-C(O)-O-, CH2=C(CH3)-C(O)-O- and where (n+m) is an integer of 3 or more. s

    4.
    发明专利
    未知

    公开(公告)号：DE69205764T2

    公开(公告)日：1996-06-27

    申请号：DE69205764

    申请日：1992-08-05

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： KANEMURA YOSHINOBU ,  SASAGAWA KATSUYOSHI ,  KOBAYASHI SEIISHI

    IPC: C07C321/14 ,  C08G18/38 ,  G02B1/04 ,  C07C319/14

    Abstract: A mercapto compound represented by the following formula (1): is obtained by reacting, in the presence of a mineral acid, thiourea with a compound represented by the following formula (2): wherein X means a hydroxyl group or a chlorine or bromine atom, and then adding a base to alkalinize the reaction mixture so that the reaction product is hydrolyzed. Further, a sulfur-containing urethane resin obtained by reacting a mercapto compound represented by the formula (1) with at least one cyanate compound selected from the group consisting of polyisocyanate compounds, polyisothiocyanate compounds and isocyanategroup-containing isothiocyanate compounds and a lens made of the resin are colorless and transparent, have high refractive index and low dispersion characteristics, and are excellent especially in heat resistance.

    6.
    发明专利
    未知

    公开(公告)号：DE69011796T2

    公开(公告)日：1995-04-20

    申请号：DE69011796

    申请日：1990-10-04

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： KANEMURA YOSHINOBU ,  SASAGAWA KATSUYOSHI ,  IMAI MASAO ,  SUZUKI TOSHIYUKI

    IPC: C08G18/30 ,  C08G18/32 ,  C08G18/38 ,  C08G18/73 ,  C08G18/74 ,  C08G18/75 ,  G02B1/04

    Abstract: A resin for urethane lenses is here disclosed which is obtained by reacting an alicyclic isocyanate compound represented by the formula (I) and/or an alicyclic isocyanate compound represented by the formula (II) with at least one active hydrogen compound selected from polyol compounds, polythiol compounds except 1,2-bis[(2-mercaptoethyl)thio]-3-mercaptopropane, and thiol compounds having a hydroxyl group. In addition, lenses comprising this resin and processes for the preparation of the resin and the lenses are also disclosed herein.

Patent Agency Ranking