PREPARATION OF POLYAMIDES
    2.
    发明专利

    公开(公告)号:DE3362642D1

    公开(公告)日:1986-04-30

    申请号:DE3362642

    申请日:1983-01-26

    Abstract: An improved process for preparing polyamides comprises contacting a dinitrile, a diamine and water in the presence of a dicarboxylic acid. In one embodiment, nylon-6,6 is prepared by contacting adiponitrile, hexamethylene diamine and water in the presence of adipic acid.

    3.
    发明专利
    未知

    公开(公告)号:DE2626676A1

    公开(公告)日:1977-01-27

    申请号:DE2626676

    申请日:1976-06-15

    Abstract: A process for producing 2-pyrrolidone by the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and at hydrogen pressures below 500 psi in the presence of a hydrogenation catalyst.

    4.
    发明专利
    未知

    公开(公告)号:FR2316228A1

    公开(公告)日:1977-01-28

    申请号:FR7619732

    申请日:1976-06-29

    Abstract: A process for producing 2-pyrrolidone by the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and at hydrogen pressures below 500 psi in the presence of a hydrogenation catalyst.

    0,2-BIS [4,6-DIAMINO-S-TRIAZIN-2-YL)-OXYCYCLOBUTANE] AND RESINS FORMED THEREFROM

    公开(公告)号:GB1212096A

    公开(公告)日:1970-11-11

    申请号:GB3360768

    申请日:1968-07-15

    Abstract: 1,212,096. Laminates; plywood. STANDARD OIL CO. 15 July, 1968, No. 33607/68. Headings B5L and B5N. [Also in Divisions C2 and C3] Laminates are obtained by heat curing a plurality of laminae impregnated with a resinous condensate of 1,2-bis-(4,6-diamino-s-triazin-2- yl) cyclobutane and at least one aliphatic, aromatic or heterocyclic aldehyde or formaldehyde precursor and, optionally, another polyamino compound, e.g. urea. The resin is applied to the laminae as a solution in water and/or ethanol and the sheets subsequently air dried before heat-curing under pressure. Examples 6, 8-10 and 12 relate to the preparation of paper laminates using resins in which the aldehyde component is formaldehyde or acrolein. Example 7 describes the preparation of a veneered plywood using a formaldehydebased resin.

    6.
    发明专利
    未知

    公开(公告)号:FR2316227A1

    公开(公告)日:1977-01-28

    申请号:FR7619731

    申请日:1976-06-29

    Abstract: A process for producing 2-pyrrolidone by the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and pressures in the presence of a hydrogenation catalyst and a reaction promoter selected from the group consisting of 2-pyrrolidone and N-alkyl-2-pyrrolidone wherein the alkyl group contains from 1 to 6 carbon atoms.

    7.
    发明专利
    未知

    公开(公告)号:DE2626675A1

    公开(公告)日:1977-01-20

    申请号:DE2626675

    申请日:1976-06-15

    Abstract: A process for producing 2-pyrrolidone by the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and pressures in the presence of a hydrogenation catalyst and a reaction promoter selected from the group consisting of 2-pyrrolidone and N-alkyl-2-pyrrolidone wherein the alkyl group contains from 1 to 6 carbon atoms.

    8.
    发明专利
    未知

    公开(公告)号:MX152995A

    公开(公告)日:1986-07-16

    申请号:MX18204580

    申请日:1980-04-22

    Abstract: A new resinous polymer containing amide linkages wherein the amide nitrogen is part of the polymer backbone is prepared by polymerizing at least one alpha, beta-unsaturated monocarboxylic acid or ammonium salt thereof in the presence of ammonia. The polymers are suitable for use as fibres, plastics films and moulding resins. A random copolymer containing the following structural units wherein R1, R2 and R3 are each independently selected from the group consisting of: (1) hydrogen; (2) C1-30 alkyl; (3) 5 to 7 member nitrogen containing heterocyclic radicals; (4) mono and poly carbocyclic radicals containing up to 30 carbon atoms; and (5) halides T is a branched chain site, M is OH, ONH4, ONH2T or NHT and x, y, and z are independently the number of such structural units in the resinous polymer of the invention is also disclosed.

    9.
    发明专利
    未知

    公开(公告)号:FI67717C

    公开(公告)日:1985-05-10

    申请号:FI801283

    申请日:1980-04-22

    Abstract: A new resinous polymer containing amide linkages wherein the amide nitrogen is part of the polymer backbone is prepared by polymerizing at least one alpha, beta-unsaturated monocarboxylic acid or ammonium salt thereof in the presence of ammonia. The polymers are suitable for use as fibres, plastics films and moulding resins. A random copolymer containing the following structural units wherein R1, R2 and R3 are each independently selected from the group consisting of: (1) hydrogen; (2) C1-30 alkyl; (3) 5 to 7 member nitrogen containing heterocyclic radicals; (4) mono and poly carbocyclic radicals containing up to 30 carbon atoms; and (5) halides T is a branched chain site, M is OH, ONH4, ONH2T or NHT and x, y, and z are independently the number of such structural units in the resinous polymer of the invention is also disclosed.

    10.
    发明专利
    未知

    公开(公告)号:FI67717B

    公开(公告)日:1985-01-31

    申请号:FI801283

    申请日:1980-04-22

    Abstract: A new resinous polymer containing amide linkages wherein the amide nitrogen is part of the polymer backbone is prepared by polymerizing at least one alpha, beta-unsaturated monocarboxylic acid or ammonium salt thereof in the presence of ammonia. The polymers are suitable for use as fibres, plastics films and moulding resins. A random copolymer containing the following structural units wherein R1, R2 and R3 are each independently selected from the group consisting of: (1) hydrogen; (2) C1-30 alkyl; (3) 5 to 7 member nitrogen containing heterocyclic radicals; (4) mono and poly carbocyclic radicals containing up to 30 carbon atoms; and (5) halides T is a branched chain site, M is OH, ONH4, ONH2T or NHT and x, y, and z are independently the number of such structural units in the resinous polymer of the invention is also disclosed.

Patent Agency Ranking