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    HARDENING RESIN COMPOSITION FOR PROCESSING TRANSFORMER
    12.
    发明专利
    HARDENING RESIN COMPOSITION FOR PROCESSING TRANSFORMER 失效

    公开(公告)号：JPS5879705A

    公开(公告)日：1983-05-13

    申请号：JP17813081

    申请日：1981-11-06

    Applicant: TOSHIBA CHEM PROD

    Inventor： TOSHIDA YOSHI ,  OKUNOYAMA TERU

    IPC: C08F32/00 ,  C08F222/26 ,  H01F5/06

    Abstract: PURPOSE:To prevent the occurrence of cracks and to improve the effect in reducing beat sounds by mixing a carboxylic acid represented by a specific structural formula, multivalent alcohol and a polymetric monopolymer. CONSTITUTION:A carboxylic acid containing an unsaturated carboxylic acid represented by structural formulasIand II as a main ingredient is reacted with multivalent alcohol to obtain an ester oligomer. This ester olygomer of 30- 80wt% is mixed with a polymetric monopolymer of 70-20wt% which is capable of copolymerizing with an ester oligomer, so as to attain a hardening resin composition used for processing a transformer. This composition has good adhesion property with component materials of the transformer and can prevent occurrence of cracks. In the formulas (n) represents two or three and (X) is an alpha,beta- unsaturated hydrocarbon group with the number of carbons being two or three.

    PREPARATION OF NOVEL COPOLYMER
    13.
    发明专利
    PREPARATION OF NOVEL COPOLYMER 失效

    公开(公告)号：JPS5863710A

    公开(公告)日：1983-04-15

    申请号：JP16234081

    申请日：1981-10-12

    Applicant: NIPPON ZEON CO

    Inventor： AEBA KOUICHI ,  TOYODA AKINOBU

    IPC: C08F218/00 ,  C08F20/00 ,  C08F22/32 ,  C08F218/02 ,  C08F218/04 ,  C08F220/00 ,  C08F220/10 ,  C08F222/26

    Abstract: PURPOSE:To prepare a novel copolymer having film-forming property and useful as an agent for modifying chemical resistance, adhesivity, hardness, and luster of a resin, by polymerizing an unsaturated ester with an adduct of a cyclopentadiene-type oligomer and an unsaturated carboxylic acid, etc. at a specific ratio. CONSTITUTION:The objective coplymer is prepared by copolymerizing a monomer mixture composed of (A) 95-5wt% acrylic or vinyl ester-type unsaturated ester monomer (e.g. methyl acrylate), (B) 5-95wt% half-ester adduct of a cyclopentadiene-type oligomer and an alpha,beta-unsaturated dicarboxylic acid or its ester (e.g. dihydrodicyclopentadiene monomaleate) and (C) 0-60wt% other copolymerizable ethylenic unsaturated monomer (e.g. styrene), in the presence of a radical initiator.

    CONTACT LENS
    19.
    发明专利
    CONTACT LENS 失效

    公开(公告)号：JPH03154023A

    公开(公告)日：1991-07-02

    申请号：JP29247689

    申请日：1989-11-13

    Applicant: NIPPON OILS & FATS CO LTD

    Inventor： ANAMI KEIZO ,  AMAYA NAOYUKI ,  MURATA TAKASHIGE ,  MIYAZAKI TAKESHI

    IPC: G02C7/04 ,  C08F222/12 ,  C08F222/20 ,  C08F222/26 ,  C08F230/08 ,  C08F290/06

    Abstract: PURPOSE:To obtain the lens having high oxygen permeability and excellent contamination resistance and durability by incorporating a specific 1-pentene-2, 4, 5-tricarbonic triester copolymer into the contact lens. CONSTITUTION:The copolymer formed by copolymerizing 2 to 95wt.% 1 or >=2 kinds of the 1-pentene-2, 4, 5-tricarbonic triester monomers expressed by general formula I (where R1, R2, R3 are the same or different groups and denote a hydrogen atom, 1 to 12C alkyl group, 1 to 12C alkenyl group, 3 to 12C cyclic alkyl group or formula II; X, Y, Z are the same or different groups and denote a methyl group, formula III to formula VII; (m), (n) and (l) denote 0 or 1; (p), (q) and (r) denote integers from 0 to 3; (k) denotes an integer from 2 to 4) as essential raw material monomers is incorporated into the contact lens.

    CONTACT LENS
    20.
    发明专利
    CONTACT LENS 失效

    公开(公告)号：JPH03144542A

    公开(公告)日：1991-06-19

    申请号：JP28194089

    申请日：1989-10-31

    Applicant: NIPPON OILS & FATS CO LTD

    Inventor： ANAMI KEIZO ,  MURATA TAKASHIGE ,  AMAYA NAOYUKI ,  MIYAZAKI TAKESHI

    IPC: G02C7/04 ,  C08F20/10 ,  C08F20/22 ,  C08F222/18 ,  C08F222/26

    Abstract: PURPOSE:To obtain the contact lens which has high oxygen permeability and can prevent the deposition of protein, lipid and inorg. matter, etc., onto the surface by using a specific polymer. CONSTITUTION:A copolymer formed by copolymerizing the 1-pentene-2, 4, 5- triester tricarboxylate monomer expressed by formula I as a raw material monomer is incorporated into this contact lens. In the formula, R1 to R3 denote a hydrogen atom, 1 to 12C alkyl group, 1 to 12C alkenyl group, 3 to 12C cyclic alkyl group or aryl group, at least one group of which contain a fluorine atom; n, m and l respectively denote 0 to 4 integer. The number of the fluorine incorporated into at least one group of R1 to R3 is preferably >=3. The contact lens which has an excellent visual power correcting effect, has the oxygen permeability to allow long-term continuous wearing and has the excellent shape stability, contamination resistance and durability is obtd. in this way.

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