Cellular Product Derived From A Phenol, Phenol Ether, Or Inorganic Phenolate Reactant Patents (Class 521/180)
With reactant which is an aldehyde or aldehyde derivative (Class 521/181)
  • 3,3'-Carbonylbis(carbazates) as blowing agents
    Patent number: 4105601
    Abstract: Novel blowing agents are disclosed comprising 3,3'-carbonylbis(organo carbazates). The organo group may be alkyl, cycloalkyl, aryl or aralkyl moieties. In the preferred embodiment the organo group is an alkyl group selected from the group consisting of methyl, isopropyl, secondary butyl or tertiary butyl. The blowing agents find utility in the preparation of expanded organoplastic materials such as rubbers, thermosetting resins and thermoplastic resins.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: August 8, 1978
    Assignee: Uniroyal, Inc.
    Inventors: Byron A. Hunter, Franklin H. Barrows