Patents Represented by Attorney Eric C. Cohen

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  • Fluorination of hexachlorobutadiene
    Patent number: 3965201
    Abstract: Hexachlorobutadiene is fluorinated with hydrogen fluoride in the presence of a fluorinated alumina catalyst to yield 2,3-dichlorohexafluorobutene-2 (butene-26).
    Type: Grant
    Filed: October 11, 1973
    Date of Patent: June 22, 1976
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Alfred O. Minklei
  • Selective oxyalkylation of mercaptophenols
    Patent number: 3939210
    Abstract: Mercaptophenols are selectively oxyalkylated at the mercapto function by a two-step process comprising reacting the mercaptophenol with a silylating agent to form novel silylated mercaptophenol derivatives and thereafter oxyalkylating the phenolic mercapto function to the degree of oxyalkylation desired. Simple hydrolyzing of the resulting product breaks the silylation block forming a hydrolyzed oxyalkylated mercaptophenol.
    Type: Grant
    Filed: September 27, 1973
    Date of Patent: February 17, 1976
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Francis J. Bajer
  • Phosphonomethyl compounds
    Patent number: 3939226
    Abstract: Compounds of the formula: ##EQU1## wherein R' is selected from the group consisting of .sup.-OH, alkoxy and aryloxy; and R is selected from the group consisting of ##EQU2## wherein Z is .sup.-OH, alkyl, aryl, alkoxy and aryloxy, provided when R' is .sup.-OH, ##EQU3## are disclosed, having utility as metal ion sequestrants and flame retardant additives.
    Type: Grant
    Filed: January 7, 1974
    Date of Patent: February 17, 1976
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Daniel J. Scharf