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    Process for the preparation of granular or powdery polyamide
    1.
    发明授权
    Process for the preparation of granular or powdery polyamide 失效
    颗粒状或粉状聚酰胺的制备方法

    公开(公告)号：US3910861A

    公开(公告)日：1975-10-07

    申请号：US39323073

    申请日：1973-08-30

    Applicant: STAMICARBON

    Inventor： WOLVERS WILHELMUS P ,  FRANSSEN PIERRE J ,  WARNIER JEAN M M

    IPC: C08G69/20 ,  C08J3/12 ,  C08G69/18

    CPC classification number: C08J3/12 ,  C08G69/20 ,  C08J2377/02

    Abstract: A one step process for the preparation of granular or powdery polyamides having a novel combination of high specific density and relative viscosity, along with narrow particle size distribution and low water extractable content, but with a wide molecular weight distribution, is described wherein the polymerization process is carried out in an inert solvent, in which the lactam monomers are substantially soluble but polyamide product is substantially insoluble, and at a temperature below the melting point of the polyamide to be formed, and wherein the essential promoter employed is bis- Epsilon -caprolactimether.

    Abstract translation: 描述了制备具有高比密度和相对粘度的新型组合以及窄的粒度分布和低的可提水含量但具有宽的分子量分布的颗粒或粉末状聚酰胺的一步法，其中聚合过程 在惰性溶剂中进行，其中内酰胺单体基本可溶，但是聚酰胺产物基本上不溶，并且在低于要形成的聚酰胺的熔点的温度下进行，并且其中使用的必需促进剂是双ε-己内酰胺醚 。

    Preparation of polyamides with special properties
    3.
    发明授权
    Preparation of polyamides with special properties 失效
    具有特殊性质的聚氨酯的制备

    公开(公告)号：US3651023A

    公开(公告)日：1972-03-21

    申请号：US3651023D

    申请日：1968-07-02

    Applicant: STAMICARBON

    Inventor： OTTENHEYM JOHANNES H ,  KRIMPEN PIETER C A VAN ,  FRANSSEN PIERRE J

    IPC: C08G69/02 ,  C08G20/08 ,  C08G20/12 ,  C08G41/00

    CPC classification number: C08G69/02

    Abstract: THERE IS PROVIDED A POLAMIDE COMPOSITION CONTAINING AT LEAST ONE ADDITVE OF LYSINE, A-AMINO-E-CAPROLACTAM, E-N-R-LYSINE (WHEREIN R STANDS FOR A BIVALENT HYDROCARBON-RADICAL), A-N-R-A-AMINO-E-CAPROLACTAM (WHEREIN R STANDS FOR A BIVALENT HYDROCARBON RADICAL), N,N'',-BIS HEXAHYDRO-AZEPIN-2-OXO-3-YL)-R (WHEREIN R STANDS FOR A DIAMINE OR A DIAMIDE) AND 1 N, 3 N, 5 N-TRI(HEXAHYDROAZEPIN-2-OXO-3-YL)-TRIAZLINE-1,3,5 AND A PROCESS FOR PRODUCING THE SAME. PREFERABLEY THE ADDITIVE IS CONTAINED IN THE COMPOSITION IN AMOUNTS OF 0.5 TO 5% BY WEIGHT OF THE POLYAMIDE.THE COMPOSTION IS USEFUL FRO SPINNING INTO FIBERS AND YARNS AND IMPROVES COLOR INTENSITY, MODULUS OF ELASTICITY AND FLAT SPOTTING.

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