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57 条记录 (耗时 0.023 秒)

    Phenolic resin recovery process
    51.
    发明授权
    Phenolic resin recovery process 失效
    酚醛树脂回收工艺

    公开(公告)号：US4118346A

    公开(公告)日：1978-10-03

    申请号：US864350

    申请日：1977-12-27

    申请人： Robert Milton Summers

    发明人： Robert Milton Summers

    IPC分类号： C08G8/00 ,  C08J11/00 ,  C08J11/16 ,  C08L61/10 ,  B29H19/00 ,  C08J11/04

    CPC分类号： C08J11/16 ,  C08J11/00 ,  C08J2361/06 ,  C08J2361/10 ,  Y02W30/705

    摘要： A method of recovering a resin material from an infusible phenolic plastic composition. The infusible phenolic plastic composition is ground to a powder and mixed with an alkali solution to produce a liquid mixture. The liquid mixture is heated to a temperature selected between 260.degree.-340.degree. C and maintained at this temperature between 160 and 3 minutes causing the resin in the infusible phenolic plastic composition to dissolve in the alkali solution and produce a liquor. Thereafter the liquor is passed through a filter to remove any insoluble plastic composition therefrom. An acid solution when added to the filtered liquor causes a solid to precipitate from the liquor. The solid is separated from the liquor and washed in a water bath to remove any water soluble salts, phenols, and cresols from the recovered resin material.

    摘要翻译： 从不可渗透的酚醛塑料组合物中回收树脂材料的方法。 将不熔酚醛塑料组合物研磨成粉末并与碱溶液混合以产生液体混合物。 将液体混合物加热至260-340℃的温度，并在该温度下保持在160-3分钟之间，导致不熔酚醛塑料组合物中的树脂溶解在碱溶液中并产生液体。 此后，将液体通过过滤器以从其中除去任何不溶性塑料组合物。 当加入到过滤的液体中时，酸溶液引起固体从液体中沉淀出来。 将固体与液体分离并在水浴中洗涤以从回收的树脂材料中除去任何水溶性盐，酚和甲酚。

    Treatment of vulcanized rubber
    53.
    发明授权
    Treatment of vulcanized rubber 失效

    公开(公告)号：US4049588A

    公开(公告)日：1977-09-20

    申请号：US639515

    申请日：1975-12-09

    申请人： Timothy Charles Philip Lee ,  William Millns

    发明人： Timothy Charles Philip Lee ,  William Millns

    IPC分类号： C08J3/12 ,  C08J11/06 ,  C08L19/00 ,  B29H19/00 ,  B02C7/00

    CPC分类号： C08J11/06 ,  C08J3/12 ,  C08L19/003 ,  C08J2321/00 ,  Y02W30/701 ,  Y10S241/31

    摘要： The invention provides finely divided vulcanized rubber having a particle size of generally less than 20 microns for re-use in the rubber industry. Vulcanizates produced from compositions containing the finely divided vulcanized rubber, either as the sole rubber component or in admixture with unvulcanized rubber, have properties significantly better than those of vulcanizates of similar compositions containing conventional reclaimed rubbers. Vulcanized rubber is converted into the finely divided rubber by the steps of (1) contacting vulcanized rubber with a fatty acid, (2) contacting the product of step (1) with a solid alkali and (3) forming a dispersion of the product of step (2) with a liquid which dissolves the alkali but does not affect the rubber. Alternatively, the finely divided vulcanized rubber results from the steps of (1) contacting the vulcanized rubber with a liquid effective to swell the rubber and thereby weaken it e.g. tetrahydrofuran, (2) comminuting the weakened material and (3) removing the liquid from the comminuted material.

    Process for obtaining a polyol-containing homogeneous liquid composition useful for the production of rigid polyurethane foam from a rigid polyurethane foam
    54.
    发明授权
    Process for obtaining a polyol-containing homogeneous liquid composition useful for the production of rigid polyurethane foam from a rigid polyurethane foam 失效
    用于获得用于从刚性聚氨酯泡沫塑料生产硬质聚氨酯泡沫的多元醇含均匀液体组合物的方法

    公开(公告)号：US4014809A

    公开(公告)日：1977-03-29

    申请号：US642634

    申请日：1975-12-19

    申请人： Osamu Kondo ,  Torao Hashimoto ,  Hajime Hasegawa

    发明人： Osamu Kondo ,  Torao Hashimoto ,  Hajime Hasegawa

    IPC分类号： C08G18/00 ,  B09B3/00 ,  C08G18/82 ,  C08J11/18 ,  C09K3/00 ,  B29H19/00 ,  C08J11/04

    CPC分类号： C08J11/18 ,  Y02W30/706

    摘要： A process for obtaining a polyol-containing homogeneous liquid composition, which can be directly reused as a polyol component for the production of rigid polyurethane foam, from a rigid polyurethane foam, which comprises treating said foam at a temperature of from 150.degree. to 220.degree. C in the presence of a mixture of (a) an aliphatic diol having 4-7 carbon atoms and having a boiling point higher than 160.degree. C and (b) a monoalkanolamine having 2 to 8 carbon atoms, the amount of said monoalkanolamine (b) present in said mixture being within the range of from 1 to 20 percent by weight.

    摘要翻译： 一种获得含硬脂聚氨酯泡沫塑料的含多元醇的均匀液体组合物的方法，该组合物可直接再次用作制备硬质聚氨酯泡沫塑料的多元醇组分，其包括在150-220℃的温度下处理所述泡沫体。 在（a）具有4-7个碳原子且沸点高于160℃的脂肪族二醇和（b）具有2至8个碳原子的单烷醇胺的混合物存在下，所述单烷醇胺（b ）存在于所述混合物中的范围为1至20重量％。

    Method of processing synthetic plastic materials for subsequent extrusion and regeneration
    56.
    发明授权
    Method of processing synthetic plastic materials for subsequent extrusion and regeneration 失效
    加工合成塑料材料用于后续挤出和再生的方法

    公开(公告)号：US3773586A

    公开(公告)日：1973-11-20

    申请号：US3773586D

    申请日：1971-03-04

    申请人： KOCH H ,  STANECK H

    发明人： KOCH H ,  STANECK H

    IPC分类号： B29B17/00 ,  B31C13/00 ,  B29H19/00

    CPC分类号： B29B17/0042 ,  Y02W30/62 ,  Y10T156/1052

    摘要： A method of treating foil webs and strips of synthetic material preparatory to feeding the same to an extruder for regeneration, according to which the foil web or strip is in a continuous manner wound upon a grate roller and with increasing thickness on said roller is, while being subjected to pressure from the outside, cut into individual sections while simultaneously said layers are at their cut edges fused to each other layer by layer, said layers being pressed through between the grate bars of said grate roller into the interior of said grate roller, thereby to form strands and the thus formed strands being withdrawn by conveying means and cut into multi-layer pieces and being subsequently conveyed to a supply station or station for further processing the thus obtained material.

    Retreading of tire covers
    57.
    发明授权
    Retreading of tire covers 失效
    轮胎覆盖物的翻新

    公开(公告)号：US3558383A

    公开(公告)日：1971-01-26

    申请号：US3558383D

    申请日：1968-07-15

    申请人： MICHELIN & CIE

    发明人： LEJEUNE DANIEL

    IPC分类号： B29D30/54 ,  B65D5/32 ,  B29H5/04 ,  B29H19/00

    CPC分类号： B29D30/54

    摘要： A TIRE IS RETREADED BY APPLYING OF TREATED MATERIAL IN RINGS CIRCUMFERENTIALLY OF THE CARCASS, THEN ROTATING THE TIRE WHILE SUBJECTING THE POSITIONED BANDS TO A UNIFORM ROLLING PRESSURE OF AT LEAST .5 KG/CM.2, AND FINALLY VULCANIZING THE ASSEMBLY.