Process for obtaining an asbestos-fiber material of a high degree of separation
    1.
    发明授权
    Process for obtaining an asbestos-fiber material of a high degree of separation 失效
    获得高分离度的亚麻纤维材料的方法

    公开(公告)号:US3668119A

    公开(公告)日:1972-06-06

    申请号:US3668119D

    申请日:1971-02-04

    Applicant: DEGUSSA

    CPC classification number: C04B20/08

    Abstract: A colloidal solution of Chrysotile asbestos which is obtained from a pre-purified aqueous suspension of crude Chrysotile asbestos by means of a shearing action is subjected to filtration or centrifuging to eliminate therefrom incompletely separated colloidal matter. Subsequently, the asbestos is precipitated from the refined solution and subjected to further processing.

    Abstract translation: 通过剪切作用从预纯化的温石棉石棉水悬浮液中获得的温石棉的胶体溶液进行过滤或离心以除去未完全分离的胶体物质。 随后,石棉从精制溶液中沉淀出来并进行进一步处理。

    PROCESS FOR PRODUCING ASBESTOS
    5.
    发明专利

    公开(公告)号:CA946104A

    公开(公告)日:1974-04-30

    申请号:CA104602

    申请日:1971-02-05

    Applicant: DEGUSSA

    Abstract: A colloidal solution of Chrysotile asbestos which is obtained from a pre-purified aqueous suspension of crude Chrysotile asbestos by means of a shearing action is subjected to filtration or centrifuging to eliminate therefrom incompletely separated colloidal matter. Subsequently, the asbestos is precipitated from the refined solution and subjected to further processing.

    A process for the production of fibrous polyoxymethylene

    公开(公告)号:GB1134364A

    公开(公告)日:1968-11-20

    申请号:GB4042967

    申请日:1967-09-05

    Applicant: DEGUSSA

    Abstract: 1,134,364. Fibrous polyoxymethylene from trioxan. DEUTSCHE GOLDUND SILBERSCHEIDEANSTALT. 5 Sept., 1967 [5 Sept., 1966], No. 40429/67. Heading C3P. Fibrous polyoxymethylene is obtained by forming an intimate mixture, e.g. by spraying or shaking of crystalline finely divided trioxan with AlCl 3 and/or TiCl 4 as initiator and heating the mixture, e.g. at 45‹ to 80‹ C. for 1 to 5 hours, and separating the polymer thus obtained from any residual monomer.

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