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    Production of dental prosthesis
    1.
    发明授权
    Production of dental prosthesis 失效
    生产牙齿前列腺

    公开(公告)号：US3758642A

    公开(公告)日：1973-09-11

    申请号：US3758642D

    申请日：1971-11-15

    Applicant: BAYER AG

    Inventor： LOGEMANN H ,  BRUCKMANN P

    IPC: A61K6/083 ,  C08F2/02 ,  C08F265/06 ,  C08F15/18

    CPC classification number: A61K6/083 ,  C08F265/06 ,  C08F2/02

    Abstract: An improved composition for use in the production of dental prostheses, comprising 85-60 parts of a polymer of methacrylic acid and 40-15 parts of an acrylic acid ester/methyl methacrylate or methacrylic acid ester/methyl methacrylate copolymer, where the ester content in the copolymer, the molecular weight of the polymer and copolymer, and the particle size of the polymer and copolymer are required to be within specified ranges to obtain a rapid start of processing and a processing time of at least one hour when the composition is used.

    Acrylonitrile copolymer threads and films containing a polymer of vinyl methyl formamide
    5.
    发明授权
    Acrylonitrile copolymer threads and films containing a polymer of vinyl methyl formamide 失效
    丙烯腈共聚物螺旋线和含有乙烯基甲酰胺聚合物的膜

    公开(公告)号：US3718717A

    公开(公告)日：1973-02-27

    申请号：US3718717D

    申请日：1971-09-24

    Applicant: BAYER AG

    Inventor： LOGEMANN H

    IPC: C08L27/04 ,  C08L33/20 ,  C08L39/00 ,  C08F29/56

    CPC classification number: C08L27/04 ,  C08L33/20 ,  C08L39/00 ,  C08L33/22 ,  C08L31/02 ,  C08L33/08 ,  C08L2666/04

    Abstract: Threads and films of acrylonitrile copolymers which contain 20 to 80 percent by weight of vinylidene chloride and/or vinyl chloride, which threads and films are free from vacuoles. The formation of vacuoles in threads or films of copolymers of acrylonitrile containing 20 to 80 percent by weight of vinylidene chloride and/or vinyl chloride can be substantially reduced or even completely prevented by adding homopolymers of vinyl methyl formamide or copolymers of vinyl methyl formamide with up to 90 mols percent of vinyl esters or acrylic acid esters to the spinning solutions of acrylonitrile copolymers and organic solvents in an amount of 0.5 to 20 percent by weight, based on the copolymer of acrylonirile and vinylidene chloride and/or vinyl chloride.

    Abstract translation: 丙烯腈共聚物的线和膜包含20至80重量％的偏二氯乙烯和/或氯乙烯，其线和膜不起泡。 通过加入乙烯基甲基甲酰胺的均聚物或乙烯基甲基甲酰胺的共聚物与上述相比，可以显着降低或甚至完全防止在含有20至80重量％偏二氯乙烯和/或氯乙烯的丙烯腈的共聚物的螺纹或薄膜中形成空泡 至丙烯腈共聚物和有机溶剂的纺丝溶液中的90摩尔％的乙烯基酯或丙烯酸酯，其量为基于丙烯腈和偏二氯乙烯和/或氯乙烯的共聚物的0.5至20重量％。

    6.
    发明专利
    未知

    公开(公告)号：FR2013562A1

    公开(公告)日：1970-04-03

    申请号：FR6925187

    申请日：1969-07-23

    Applicant: BAYER AG

    Inventor： LOGEMANN H ,  BRUECKMANN P

    IPC: A61K6/083 ,  C08F2/02 ,  C08F265/06 ,  C08F29/00 ,  A61C13/00 ,  C08F47/00

    Abstract: 1,272,406. Methyl methacrylate polymers. FARBENFABRIKEN BAYER A.G. 23 July, 1969 [23 July, 1968 (2)], No. 37120/69. Heading C3P. In a process for the production of shaped articles by mixing a liquid consisting predominantly of monomeric methyl methacrylate with a polymeric powder to form a kneadable plastic mass and then placing the mass in a mould and converting it to the solid state by polymerization, the polymeric powder comprises in the proportion (1): (2) of 85 to 60 : 15 to 40 the components (1) a homopolymer of methyl methacrylate, optionally containing up to 2 wt. per cent of residues of another monomer, and having a K-value of 75-120, at least 98% of its particles being below 125 Á and at least 50% of its particles being above 63 Á in size and (2) at least one copolymer of (a) 15-30 parts by weight of at least one acrylic acid ester or 18-50 parts by weight of at least one methacrylic acid ester, the methacrylic ester or esters having 4-14 carbon atoms in the alcoholic moiety and (b) 85-70 parts by weight of methyl methacrylate optionally containing not more than 5 wt. per cent of another monomer, the copolymer having a K-value of 75-120 and at least 15% of its particles being above 125 Á in size.

    8.
    发明专利
    未知

    公开(公告)号：NL6911225A

    公开(公告)日：1970-01-27

    申请号：NL6911225

    申请日：1969-07-22

    Applicant: BAYER AG

    Inventor： LOGEMANN H ,  BRUECKMANN P

    IPC: A61K6/083 ,  C08F2/02 ,  C08F265/06 ,  C08F25/00 ,  A61K5/00

    Abstract: 1,272,406. Methyl methacrylate polymers. FARBENFABRIKEN BAYER A.G. 23 July, 1969 [23 July, 1968 (2)], No. 37120/69. Heading C3P. In a process for the production of shaped articles by mixing a liquid consisting predominantly of monomeric methyl methacrylate with a polymeric powder to form a kneadable plastic mass and then placing the mass in a mould and converting it to the solid state by polymerization, the polymeric powder comprises in the proportion (1): (2) of 85 to 60 : 15 to 40 the components (1) a homopolymer of methyl methacrylate, optionally containing up to 2 wt. per cent of residues of another monomer, and having a K-value of 75-120, at least 98% of its particles being below 125 Á and at least 50% of its particles being above 63 Á in size and (2) at least one copolymer of (a) 15-30 parts by weight of at least one acrylic acid ester or 18-50 parts by weight of at least one methacrylic acid ester, the methacrylic ester or esters having 4-14 carbon atoms in the alcoholic moiety and (b) 85-70 parts by weight of methyl methacrylate optionally containing not more than 5 wt. per cent of another monomer, the copolymer having a K-value of 75-120 and at least 15% of its particles being above 125 Á in size.

    9.
    发明专利
    未知

    公开(公告)号：SE350190B

    公开(公告)日：1972-10-23

    申请号：SE1034169

    申请日：1969-07-22

    Applicant: BAYER AG

    Inventor： LOGEMANN H ,  BRUECKMANN P

    IPC: A61K6/083 ,  C08F2/02 ,  C08F265/06 ,  A61C13/08 ,  B29C5/00 ,  C08F27/00

    Abstract: 1,272,406. Methyl methacrylate polymers. FARBENFABRIKEN BAYER A.G. 23 July, 1969 [23 July, 1968 (2)], No. 37120/69. Heading C3P. In a process for the production of shaped articles by mixing a liquid consisting predominantly of monomeric methyl methacrylate with a polymeric powder to form a kneadable plastic mass and then placing the mass in a mould and converting it to the solid state by polymerization, the polymeric powder comprises in the proportion (1): (2) of 85 to 60 : 15 to 40 the components (1) a homopolymer of methyl methacrylate, optionally containing up to 2 wt. per cent of residues of another monomer, and having a K-value of 75-120, at least 98% of its particles being below 125 Á and at least 50% of its particles being above 63 Á in size and (2) at least one copolymer of (a) 15-30 parts by weight of at least one acrylic acid ester or 18-50 parts by weight of at least one methacrylic acid ester, the methacrylic ester or esters having 4-14 carbon atoms in the alcoholic moiety and (b) 85-70 parts by weight of methyl methacrylate optionally containing not more than 5 wt. per cent of another monomer, the copolymer having a K-value of 75-120 and at least 15% of its particles being above 125 Á in size.

    10.
    发明专利
    未知

    公开(公告)号：DK136984C

    公开(公告)日：1978-05-16

    申请号：DK395269

    申请日：1969-07-23

    Applicant: BAYER AG

    Inventor： LOGEMANN H ,  BRUECKMANN P-G

    IPC: A61K6/083 ,  C08F2/02 ,  C08F265/06

    Abstract: 1,272,406. Methyl methacrylate polymers. FARBENFABRIKEN BAYER A.G. 23 July, 1969 [23 July, 1968 (2)], No. 37120/69. Heading C3P. In a process for the production of shaped articles by mixing a liquid consisting predominantly of monomeric methyl methacrylate with a polymeric powder to form a kneadable plastic mass and then placing the mass in a mould and converting it to the solid state by polymerization, the polymeric powder comprises in the proportion (1): (2) of 85 to 60 : 15 to 40 the components (1) a homopolymer of methyl methacrylate, optionally containing up to 2 wt. per cent of residues of another monomer, and having a K-value of 75-120, at least 98% of its particles being below 125 Á and at least 50% of its particles being above 63 Á in size and (2) at least one copolymer of (a) 15-30 parts by weight of at least one acrylic acid ester or 18-50 parts by weight of at least one methacrylic acid ester, the methacrylic ester or esters having 4-14 carbon atoms in the alcoholic moiety and (b) 85-70 parts by weight of methyl methacrylate optionally containing not more than 5 wt. per cent of another monomer, the copolymer having a K-value of 75-120 and at least 15% of its particles being above 125 Á in size.

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