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128 records (took 0.021 seconds)

    122.
    发明专利
    未知

    公开(公告)号：DE60201600D1

    公开(公告)日：2004-11-18

    申请号：DE60201600

    申请日：2002-04-30

    Applicant: ESSILOR INT

    Inventor： WANIGATUNGA SIRISOMA ,  TURSHANI YUSEF ,  JIANG PEIQI

    IPC: C08G75/08

    Abstract: A process for polymerizing episulfide monomers comprising the steps of:(c) mixing to an episulfide monomer or a mixture of episulfide monomers an effective amount of at least one photopolymerization catalyst selected from the group consisting of (cyclopentadienyl) ruthenium and osmium complexes and an effective amount of at least a co-catalyst selected from phosphonium salts, phosphines and amines; and(d) irradiating the mixture of (a) with an ultra-violet radiation to polymerize the mixture.

    123.
    发明专利
    未知

    公开(公告)号：DE69804311T2

    公开(公告)日：2002-09-19

    申请号：DE69804311

    申请日：1998-07-03

    Applicant: ESSILOR INT

    Inventor： JIANG PEIQI ,  MENDUNI GILBERT ,  WIDAWSKI GILLES

    IPC: G02C7/02 ,  C08F2/48 ,  C08F222/10 ,  C08G75/04 ,  G02B1/04

    Abstract: The invention concerns novel polymerisable compositions and optical lenses with high refractive index obtained from said compositions, characterized in that they comprise as constituents base copolymerisable monomers at least 85 wt. % of the total weight of copolymerisable monomers present in the composition: of a mixture M, for 100 parts by weight of the mixture; of (A) 20 to 80 parts of one or several, preferably only one, non-aromatic compounds (I) comprising two thio(meth)acrylate functions, and (B) 80 to 20 parts of a compound of formula (I) in which R1 and R2 represent, independently of each other, H or CH3 and m+n has a mean value from 0 to 20 inclusively; and 3 to 30% by weight relative to the weight of mixture M of a polythiol; the composition containing less than 5 wt. % of other aromatic thio(meth)acrylate copolymerisable, cyclanic or vinyl aromatic mono(meth)acrylate monomers. The invention is applicable to the manufacture of spectacle lenses.

    124.
    发明专利
    未知

    公开(公告)号：FR2765879B1

    公开(公告)日：2002-06-07

    申请号：FR9708903

    申请日：1997-07-11

    Applicant: ESSILOR INT

    Inventor： JIANG PEIQI ,  MENDUNI GILBERT ,  WIDAWSKI GILLES

    IPC: G02C7/02 ,  C08F2/48 ,  C08F222/10 ,  C08G75/04 ,  G02B1/04 ,  C08F220/38

    Abstract: The invention concerns novel polymerisable compositions and optical lenses with high refractive index obtained from said compositions, characterized in that they comprise as constituents base copolymerisable monomers at least 85 wt. % of the total weight of copolymerisable monomers present in the composition: of a mixture M, for 100 parts by weight of the mixture; of (A) 20 to 80 parts of one or several, preferably only one, non-aromatic compounds (I) comprising two thio(meth)acrylate functions, and (B) 80 to 20 parts of a compound of formula (I) in which R1 and R2 represent, independently of each other, H or CH3 and m+n has a mean value from 0 to 20 inclusively; and 3 to 30% by weight relative to the weight of mixture M of a polythiol; the composition containing less than 5 wt. % of other aromatic thio(meth)acrylate copolymerisable, cyclanic or vinyl aromatic mono(meth)acrylate monomers. The invention is applicable to the manufacture of spectacle lenses.

    125.
    发明专利
    未知

    公开(公告)号：DE69804311D1

    公开(公告)日：2002-04-25

    申请号：DE69804311

    申请日：1998-07-03

    Applicant: ESSILOR INT

    Inventor： JIANG PEIQI ,  MENDUNI GILBERT ,  WIDAWSKI GILLES

    IPC: G02C7/02 ,  C08F2/48 ,  C08F222/10 ,  C08G75/04 ,  G02B1/04

    Abstract: The invention concerns novel polymerisable compositions and optical lenses with high refractive index obtained from said compositions, characterized in that they comprise as constituents base copolymerisable monomers at least 85 wt. % of the total weight of copolymerisable monomers present in the composition: of a mixture M, for 100 parts by weight of the mixture; of (A) 20 to 80 parts of one or several, preferably only one, non-aromatic compounds (I) comprising two thio(meth)acrylate functions, and (B) 80 to 20 parts of a compound of formula (I) in which R1 and R2 represent, independently of each other, H or CH3 and m+n has a mean value from 0 to 20 inclusively; and 3 to 30% by weight relative to the weight of mixture M of a polythiol; the composition containing less than 5 wt. % of other aromatic thio(meth)acrylate copolymerisable, cyclanic or vinyl aromatic mono(meth)acrylate monomers. The invention is applicable to the manufacture of spectacle lenses.

    126.
    发明专利
    未知

    公开(公告)号：ES2118008T3

    公开(公告)日：1998-09-01

    申请号：ES96401065

    申请日：1996-05-15

    Applicant: ESSILOR INT

    Inventor： JIANG PEIQI

    IPC: C07C69/54 ,  C07C327/40 ,  G02C7/02 ,  C08F2/48 ,  C08F20/26 ,  C08F20/38 ,  C08F220/30 ,  C08F220/38 ,  C08F228/02 ,  C08F283/00 ,  C08F290/00 ,  C08F290/06 ,  G02B1/04

    Abstract: Polymer compsn. comprises: (a) 10-70 wt.% bifunctional thio(meth)acrylate monomer of formula (I) CH2=C(R1)-C(=O)-S-CH2CH2SCH2CH2-S-C(=O)-C(R2)=CH2 (I) in which R1, R2 = H or CH3 or a mixt. of monomer of formula (I) with at least one monomer of formula (II) CH2=C(R'1)-C(=O)-S-Ph-S-Ph-S-C(=O)-C(R'2)=CH2 (II) in which R'1, R'2 = H or CH3; (b) 10-60 wt.% of at least one monomer of formula (III) CH2=C(R3)-C(=O)-(OCH2CH2)m-O-CäCH3ü2-Ph-O-(CH2CH2O) n-C(=O)-C(R4)=CH2 (III) in which R3, R4 = H or CH3 and 0

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