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    DISPERSIONS OF RARE EARTH HALIDES IN AN AQUEOUS MEDIUM
    3.
    发明专利
    DISPERSIONS OF RARE EARTH HALIDES IN AN AQUEOUS MEDIUM 未知

    公开(公告)号：ZA897657B

    公开(公告)日：1990-07-25

    申请号：ZA897657

    申请日：1989-10-09

    Applicant: RHONE POULENC CHIMIE

    Inventor： SEGAUD CHRISTIAN ,  CHRISTIAN SEGAUD

    IPC: C01F17/00 ,  C09K23/00 ,  B01J13/00 ,  C10M173/02 ,  C10M ,  C10N

    Abstract: Novel aqueous lubricant dispersions contain at least one rare earth halide, e.g., cerium trifluoride, and at least one polymeric dispersing agent therefor, such at least one dispersing agent including: (a) a copolymer of an ethylenically unsaturated carboxylic acid or derivative thereof with an alpha -olefin comonomer and/or a vinyl comonomer; (b) a homopolymer or copolymer of an ethylenically unsaturated carboxylic acid or derivative thereof; (c) a copolymer of at least one ethylenically unsaturated carboxylic acid and at least one ethylenically unsaturated sulfonic acid comonomer; and/or (d) a polymer of an alkylene oxide of an (arylalkyl)phenol, or phosphated or sulfated derivative thereof.

    SURFACTANT COMPOSITIONS BASED ON PHOSPHORIC ESTERS,PROCESS FOR THEIR PREPARATION AND THEIR USE
    4.
    发明专利
    SURFACTANT COMPOSITIONS BASED ON PHOSPHORIC ESTERS,PROCESS FOR THEIR PREPARATION AND THEIR USE 未知

    公开(公告)号：ZA875053B

    公开(公告)日：1988-03-30

    申请号：ZA875053

    申请日：1987-07-10

    Applicant: RHONE POULENC CHIMIE

    Inventor： GIRARDEAU YVETTE ,  YVETTE GIRARDEAU ,  RUFFO GEORGES ,  GEORGES RUFFO ,  SEGAUD CHRISTIAN ,  CHRISTIAN SEGAUD

    IPC: A01N25/30 ,  C07F9/09 ,  B01J13/00 ,  C07F9/12 ,  C09K23/00 ,  C09K23/14 ,  C09K23/42 ,  B01F ,  A01N

    Abstract: 1. A process for the preparation of surface active compositions by phosphatation by phosphoric anhydride of at least one polyoxyalkylenated derivative R1 -OR-OH (formula (V)), in which formula : O-R represents a succession of identical or different C2 -C4 oxyalkylenated units, in which the number of units can range from 1 to 80, R1 is a C8 -C20 straight or branched chain alkyl or alkenyl radical or an aryl radical of formula (III) see diagramm : EP0252824,P16,F1 in which : m is an integer of 1, 2 or 3 p is an integer of 1 or 2 R3 is a hydrogen atom or a C1 -C4 alkyl radical, and R2 is a C4 -C12 alkyl radical or a radical of the following formula : see diagramm : EP0252824,P16,F2 wherein : R4 represents a hydrogen atom or a C1 -C4 alkyl or phenyl radical ; and optionally neutralisation of the acid functions, the process being characterised in that the phosphatation operation is carried out in two steps : a phosphatation step in the true sense which is effected by continuously introducing phosphoric anhydride into a medium which is subjected to turbulent agitation conditions, the medium being formed by said polyoxyalkylenated derivative containing water in a sufficient amount to initiate the phosphatation reaction, at a temperature of the order of 35 to 40 degrees C at the beginning of the reaction, said temperature being maintained at a temperature lower than or equal to 45 degrees C until the end of the operation of introducing the phosphoric anhydride, the total amount of phosphoric anhydride used corresponding to a polyoxyalkylenated derivative/P2 O5 molar ratio equal to 3 +- 0.3, followed by a step for maturing of the reaction medium obtained, said step being carried out under turbulent agitation conditions at a temperature of between 40 and 60 degrees C.

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