中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.01 seconds)

    Color improvement of phosphate esters
    1.
    发明授权
    Color improvement of phosphate esters 失效
    磷酸盐的颜色改进

    公开(公告)号：US3681482A

    公开(公告)日：1972-08-01

    申请号：US3681482D

    申请日：1970-02-04

    Applicant: FMC CORP

    Inventor： PATEL VITHAL C ,  ORWOLL EDWARD F

    IPC: C07F9/02 ,  C07F9/12 ,  C07F9/08

    CPC classification number: C07F9/025 ,  C07F9/12

    Abstract: A process for the permanent removal of color from phosphate esters of alkylphenols which either are colored or become colored on storage by simultaneously bleaching and color-stabilizing the phosphate esters with sodium borohydride or lithium borohydride.

    Abstract translation: 通过同时使硼氢化钠或硼氢化锂同时漂白和着色稳定磷酸酯，在烷基酚的磷酸酯上永久除去着色或变色的方法。

    Process for producing trialkyl phosphates
    3.
    发明授权
    Process for producing trialkyl phosphates 失效
    生产磷酸三辛酯的方法

    公开(公告)号：US3644602A

    公开(公告)日：1972-02-22

    申请号：US3644602D

    申请日：1968-08-05

    Applicant: FMC CORP

    Inventor： ORWOLL EDWARD F

    IPC: C07C29/70 ,  C07C31/30 ,  C07F9/11 ,  C07F9/08

    CPC classification number: C07F9/11 ,  C07C29/70 ,  C07C31/30

    Abstract: PROCESS FOR THE PREPARATION OF TRIS(C6 TO C12 ALKYL) PHOSPHATES FROM PHOSPHORYL CHLORIDE AND A CORRESPONDING ALKALI METAL (C6 TO C12) ALKOXIDE. THE ALKALI METAL (C6 TO C12) ALKOXIDE IS PREPARED IN HIGH YIELD AND HIGH PURITY BY AN ALKOXIDE EXCHANGE REACTION BETWEEN AN ALKALI METAL ALKOXIDE OF A C4 OR C5 SATURATED PRIMARY ALCOHOL AND A C6 TO C12 ALCOHOL.

    Process for purifying triaryl phosphates by reduced pressure distillation and phenol injection
    8.
    发明授权
    Process for purifying triaryl phosphates by reduced pressure distillation and phenol injection 失效
    通过降低压力蒸馏和酚醛注射来净化三价磷酸盐的方法

    公开(公告)号：US3679550A

    公开(公告)日：1972-07-25

    申请号：US3679550D

    申请日：1970-09-10

    Applicant: FMC CORP

    Inventor： ORWOLL EDWARD F

    IPC: C07F9/02 ,  C07F9/12 ,  B01D3/34

    CPC classification number: C07F9/025 ,  C07F9/12

    Abstract: REACTION MIXTURES, RESULTING FROM THE PHOSPHORYLATION OF A MIXTURE CONTAINING PHENOL; ORTHO-, META- AND PARAALKYLPHENOL; 2,6-, 2,4-, 2,5- AND 3,5-DIALKYLPHENOLS, 2,4,6AND 2,3,5-TRIALKYLPHENOLS WITH PHOSPHORUS OXYCHLORIDES, CONTAINING TRIS (ALKYLPHENYL) PHOSPHATE ESTERS, UNTREACTED ALKYLPHENOLS AND GENERALLY A CATALYST RESIDUE ARE PURIFIED TO REMOVE THE UNREACTED ALKYLPHENOLS BY (1) DISTILLING THE REACTION MIXTURE AT AN ELEVATED TEMPERATURE AND REDUCED PRESSURE TO REMOVE MOST OF THE UNREACTED ALKYLATED PHENOLS (GENERALLY HINDERED ALKYLATED PHENOLSA), (2) SPARGING PHENOL INTO THE REMAINING REACTION MIXUTRE FOR ONE-HALF TO SEVERAL HOURS AT ELEVATED TEMPERATURES AND REDUCED PRESSURE TO REMOVE REMAINING HINDERED PHENOLS NOT ONLY BY A SIMPLE ENTRAINING MECHANISM BUT ALSO, APPARENTLY, BY TRANSALKYLATION AND TRANSESTERIFICATION REACTIONS, LEAVING ESSENTIALLY ONLY UNHINDERED PHENOLS IN THE PRODUCT PHOSPHATE ESTER, (3) DISTILLING THE SPARGED REACTION MIXTURE TO SEPARATE THE PHOSPHATE ESTER AND UNHINDERED PHENOLS FROM THE REACTION RESIDUE WHICH ALSO GENERALLY CONTAINS A CATALYST RESIDUE, AND (4) FURTHER PURIFYING THE PRODUCT BY CONVENTIONAL MEANS SUCH AS CAUSTIC WASHING AND/OR ACTIVATED CARBON TREATMENT TO REDUCE THE COLOR OF THE TRIS(ALKYLPHENYL) PHOSPHATE ESTERS.

Patent Agency Ranking