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    Manufacture of resilient compound foams
    2.
    发明授权
    Manufacture of resilient compound foams 失效
    弹性复合材料的制造

    公开(公告)号：US3840628A

    公开(公告)日：1974-10-08

    申请号：US25925072

    申请日：1972-06-02

    Applicant: BASF AG

    Inventor： STASTNY F ,  TRIESCHMANN H ,  GAETH R ,  KOERNER H

    IPC: B29C67/20 ,  B29C70/66 ,  C08J9/35 ,  B29D27/04

    CPC classification number: C08J9/35 ,  B29C67/207 ,  B29C70/66 ,  B29K2105/165 ,  C08J2375/04 ,  Y10S264/05 ,  Y10T428/2991

    Abstract: 1. IN A PROCESS FOR THE MANUFACTURE OF RESILIENT COMPOUND FOAMS WHEREIN A REACTION MIXTURE OF (A) PREFOAMED SOFT ELASTIC OLEFIN POLYMER PARTICLES HAVING A PARTICLE SIZE OF FROM ABOUT 5 TO 50 MM. AND (B) 20 TO 100 G., PER LITER OF SAID PREFOAMED PLASTICS PARTICLES, OF A FOAMABLE MIX OF POLYISOCYANATES, POLYOLS, WATER, CATALYST AND, OPTIONALLY, (C) OTHER AUXILIARIES, PLASTICIZERS, FINGICIDES, BACTERICIDES, ING OF STABILIZERS, PLASTICIZERS, FUNGICIDES, BACTERICIDES, FLAME RETARDANTS, DYES AND FILLERS IS FOAMED IN A MOLD HAVING A MOVABLE LID, THE IMPROVEMENT WHICH COMPRISES: (1) COATING WATER ONTO SAID PREFOAMED SOFT ELASTIC OLEFIN POLYMER PARTICLES, SAID PARTICLES HAVING A SMOOTH SURFACE AND BEVELLED OR ROUNDED EDGES AND FURTHER HAVING A BULK DENSITY OF FROM 5 TO 100 G./L.; (2) PLACING THE REMAINING COMPONENTS OF SAID FOAMABLE MIX IN THE MOLD WITH A LAYER OF SAID (3) COVERING SAID REMAINING COMPONENTS OF SAID FOAMABLE MIX IN THE MOLD WITH A LAYER OF SAID PREFOAMED SOFT ELASTIC OLEFIN POLYMER PARTICLES COATED WITH WATER; (4) CLOSING THE MOLD; (5) CAUSING SAID COATED PREFOAMED SOFT ELASTIC OLEFIN POLYMER PARTICLES TO CONTACT SAID REMAINING COMPONENTS OF SAID FOAMABLE MIX BY TURNING SAID MOLD; AND (6) ALLOWING THE REACTION MIXTURE TO FOAM WHEREBY A POLYURETHANE FOAM IS FORMED IN WHICH FROM 200 TO 800 ML. OF THE PREFOAMED SOFT ELASTIC OLEFIN POLYMER PARTICLES PER LITER OF FOAM ARE EMBEDDED IN SAID FOAM.

    Production of expanded ethylene polymers
    4.
    发明授权
    Production of expanded ethylene polymers 失效
    膨胀乙烯聚合物的生产

    公开(公告)号：US3818086A

    公开(公告)日：1974-06-18

    申请号：US2951570

    申请日：1970-04-17

    Applicant: BASF AG

    Inventor： STASTNY F ,  GAETH R ,  IKERT B

    IPC: C08J9/10 ,  C08J9/16 ,  B29C3/00 ,  B29D27/00

    CPC classification number: C08J9/16 ,  B29C44/3415 ,  B29C44/445 ,  B29C44/586 ,  C08J9/10 ,  C08J2323/00 ,  C08J2323/04 ,  Y10S264/05 ,  Y10S264/13 ,  Y10S264/17 ,  Y10S264/18 ,  Y10S264/64

    Abstract: Production of flexible expanded moldings from olefin polymers by heating a mixture comprising an olefin polymer, a peroxide and a solid expanding agent in a mold, which is gastight when closed and is filled with a volume of said mixture equal to from 95% to 100% of its capacity, to a temperature above the softening point of the olefin polymer and above the decomposition temperature of the peroxide and of the expanding agent, starting to release the pressure in the mold to atmospheric pressure, immediately increasing the volume of the mold to from 3 to 35 times the volume of the expansible melt within from 0.1 to 20 seconds and then cooling the expanded molding. The moldings are used as thermal and sound insulating materials and as upholstery padding.

    Abstract translation: 通过在模具中加热包含烯烃聚合物，过氧化物和固体发泡剂的混合物来生产柔性膨胀模制品，所述模具在封闭时气密并且填充有等于95％至100％的所述混合物的体积 的能力达到高于烯烃聚合物的软化点的温度并高于过氧化物和发泡剂的分解温度，开始将模具中的压力释放到大气压力，立即将模具的体积从 可膨胀熔体的体积的3至35倍在0.1至20秒内，然后冷却膨胀模制件。 模制品用作隔热材料和室内装饰衬垫。

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