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    Cellular urethanes
    12.
    发明授权
    Cellular urethanes 失效
    蜂窝状氨基甲酸酯

    公开(公告)号：US3322698A

    公开(公告)日：1967-05-30

    申请号：US23484162

    申请日：1962-11-01

    Applicant: ALLIED CHEM

    Inventor： WILES ROBERT A ,  DEGGINGER EDWARD R

    IPC: C07C41/03 ,  C07F9/09 ,  C07F9/10 ,  C08G18/50 ,  C08G65/26

    CPC classification number: C08G65/2639 ,  C07C41/03 ,  C07F9/091 ,  C07F9/10 ,  C08G18/5003 ,  C08G18/5009 ,  C08G18/5084 ,  C07C43/126

    Abstract: The invention comprises a phosphorus-containing polyether obtainable by reacting an epihalohydrin and a polyol component which comprises a sugar alcohol containing 5 or 6 carbons, a triol and orthophosphoric acid as described below. The reaction is suitably effected in the presence of an acidic fluorine-containing compound as catalyst, e.g. fluoboric acid. The term orthophosphoric acid includes strong phosphoric acid which contains in addition to orthophosphoric acid, pyrophosphoric acid and possibly higher polyphosphoric acids. In an example a mixture of glycerine, sorbitol and phosphoric acid is heated to 85 DEG C., fluoboric acid is added as catalyst and the temperature maintained between 86 DEG C. and 92 DEG C. during the addition of epichlorhydrin, and the mixture allowed to stand for 2 hours after the addition. The reaction mass is neutralized with triethanolamine. The epihalohydrin is preferably epichlorhydrin and the ratio of the number of moles of epihalohydric to the number of hydroxyl groups in the polyol component is preferably 0.5: 1 to 6: 1. The polyol component is preferably a mixture of from 80 to 30 equivalent weight per cent of the sugar alcohol, preferably sorbitol, and 20 to 70 equivalent weight per cent of the triol, preferably glycerine, and orthophosphoric acid taken together, and the amount of orthophosphoric acid is preferably such that the polyether contains 0.3 to 2.5% by wt. of combined phosphorus.

    Dust suppressing during mining process
    14.
    发明授权
    Dust suppressing during mining process 失效
    采矿过程中的粉尘抑制

    公开(公告)号：US3690727A

    公开(公告)日：1972-09-12

    申请号：US3690727D

    申请日：1970-10-13

    Applicant: ALLIED CHEM

    Inventor： DEGGINGER EDWARD R

    IPC: B01D47/02 ,  B01D53/34 ,  E21C41/00

    CPC classification number: B01D47/06 ,  B01D47/021 ,  B01D53/34

    Abstract: Dilatant compositions comprising aqueous solutions containing 0.5 to 6.0 weight percent alkali metal borate and 0.5 to 6.0 weight percent water soluble polyvinyl alcohol are effective dust suppressants and collectors.

    Abstract translation: 包含含有0.5-6.0重量％碱金属硼酸盐和0.5-6.0重量％水溶性聚乙烯醇的水溶液的稀释剂组合物是有效的除尘剂和收集剂。

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