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    RESIN MATERIAL FOR PLASTIC LENS AND LENS COMPOSED THEREOF
    1.
    发明专利
    RESIN MATERIAL FOR PLASTIC LENS AND LENS COMPOSED THEREOF 未知

    公开(公告)号：CA1207939A

    公开(公告)日：1986-07-15

    申请号：CA437130

    申请日：1983-09-20

    Applicant: TORAY INDUSTRIES

    Inventor： FUKUDA TADANORI ,  SAKAMOTO SADAYUKI

    IPC: C08G18/67

    Abstract: RESIN MATERIAL FOR PLASTIC LENS AND LENS COMPOSED THEREOF A polymer obtained by polymerizing a urethanized acrylic or methacrylic monomer obtained by reacting the hydroxyl group of an acrylic or methacrylic monomer having a nucleus-halogen-substituted aromatic ring and a hydroxyl group with the isocyanate group of a polyfunctional isocyanate is excellent and has a high refractive index. Accordingly, this polymer is valuable as a resin material for a plastic lens.

    RESIN MATERIAL FOR PLASTIC LENS AND LENS COMPOSED THEREOF
    2.
    发明专利
    RESIN MATERIAL FOR PLASTIC LENS AND LENS COMPOSED THEREOF 未知

    公开(公告)号：DE3374869D1

    公开(公告)日：1988-01-21

    申请号：DE3374869

    申请日：1983-09-22

    Applicant: TORAY INDUSTRIES

    Inventor： FUKUDA TADANORI ,  SAKAMOTO SADAYUKI

    IPC: C08F20/36 ,  G02B1/04 ,  B29D11/00

    Abstract: A resin material (I) for a plastic lens, having a refractive index of at least 1.58. (I) is a homopolymer of a urethanised acrylic or methacrylic monomer (II) or a copolymer of (II) with another vinyl monomer (III) having an aromatic ring. (II) is produced by the reaction of an OH gp. of an acrylic or methacrylic monomer (IV) with an nNCO gp. of a polyfunctional isocyanate (V). (IV) has a nucleus-halogen-substd. aromatic ring and has the formula (a),(b) or (c): X=Cl, Br or I; each of R1 and R2=H or CH3;n=an integer 1-4; and 1 and m=integers 0-4, but 1 + m=0-4. The copolymer of (II) and (III) contains up to 70 wt.% (III).

    POLYURETHANE RESINS AND POLYURETHANE RESIN COATING COMPOSITIONS
    6.
    发明专利
    POLYURETHANE RESINS AND POLYURETHANE RESIN COATING COMPOSITIONS 未知

    公开(公告)号：CA1174398A

    公开(公告)日：1984-09-11

    申请号：CA333511

    申请日：1979-08-10

    Applicant: TORAY INDUSTRIES

    Inventor： FUKUDA TADANORI ,  SAKAMOTO SADAYUKI ,  SAITO MASAMI

    IPC: C08G18/73 ,  C09D3/72

    Abstract: Polyurethane resins with an excellent weather resistance are provided by the reaction of polyols with trifunctional isocyanates which are expressed by the following general formula: (R = a remnant of divalent hydrocarbon group with the carbon number of 2 or 3) The reaction between a polyol and a trifunctional isocyanate is effectuated at an NCO/OH mole percentage of 0.5 to 2.0 and adjustments are made so that the concentration of carbamide group will be 5 x 10-4 to 50 x 10-4 moles per gram of the reaction product and that the bridging parameter will be 150 to 1,500. The resins may be used to best advantage as polyurethane resin coatings excelling in weather resistance.

    OPTICAL RESIN
    8.
    发明专利
    OPTICAL RESIN 失效

    公开(公告)号：JPH02283731A

    公开(公告)日：1990-11-21

    申请号：JP10425389

    申请日：1989-04-24

    Applicant: TORAY INDUSTRIES

    Inventor： MORI KAORU ,  SAKAMOTO SADAYUKI ,  OKA KOICHIRO

    IPC: G02B1/04 ,  C08G75/02 ,  C08G75/04

    Abstract: PURPOSE:To obtain an optical resin being free from the problem of a pot life and having a high refractive index and sufficient heat resistance by using a polymerizable prepolymer prepared by reacting divinylbenzene or a specified compound with an aliphatic polythiol compound. CONSTITUTION:This optical resin contains a polymeriable component comprising at least a polymerizable prepolymer obtained by the addition reaction of divinylbenzene and/or a compound of formula I (wherein X is H or CH3) with an aliphatic polythiol compound of formula II [wherein (n) is 1-3; and R is a group formed by bonding at least one kind of a residue selected from among residues of formulas III, IV and V with an S residue within the scope in which the number of carbon atoms, alpha, is 3-10, the number of sulfur atoms, beta, is 2-9, and alpha

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