Organic Nh, =nh, Hnh Nitrogen Reactant Contains At Least One Halogen Atom Patents (Class 528/63)
  • Interpolymers of polyurethanes and addition polymerizable monomers
    Patent number: 4312972
    Abstract: Interpolymerizate of polyurethane-forming ingredients (polyol, polyisocyanate) and free radical addition polymerizable monomers, at least one of which contains an hydroxyl group (e.g., styrene plus 2-hydroxyethyl methacrylate). The interpolymer is prepared in the presence of a catalyst for polyurethane formation and a free radical addition polymerization catalyst. Product is homogeneous and insoluble. System is useful in reaction injection molding processes.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: January 26, 1982
    Assignee: Uniroyal Ltd.
    Inventor: Som N. Khanna
  • Polyurethane elastomers and a process for their production
    Patent number: 4152510
    Abstract: Novel polyurethane elastomers having excellent physical properties are prepared utilizing as chain extenders aromatic diamine compounds having the general formula ##STR1## wherein R is hydrogen, C.sub.1 to C.sub.4 alkyl, halogen, C.tbd.N, CF.sub.3 or SO.sub.2 --Z wherein Z is C.sub.1 to C.sub.4 alkyl, several of which diamine compounds are hitherto unknown in the art.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: May 1, 1979
    Assignee: Bayer Aktiengesellschaft
    Inventors: Johannes Blahak, Walter Meckel, Erwin Muller
  • Abrasion resistant polyurethane article having a high rolling coefficient of friction
    Patent number: 4134883
    Abstract: An abrasion resistant traction article is made, comprising a cured, high traction, extended polyurethane composition, comprising the cured reaction product of: (1) 100 parts of a prepolymer made from polyoxytetramethylenediol, polyoxyisopropylenediol and tolylene diisocyanate and (2) 8.0 parts to 10.0 parts of methylene bis(o-chloroaniline), acting as a chain extender.
    Type: Grant
    Filed: August 23, 1977
    Date of Patent: January 16, 1979
    Assignee: Westinghouse Electric Corp.
    Inventors: Morris A. Mendelsohn, Carl P. Izzo
  • Process for the production of polyurethane elastomers and foams
    Patent number: 4133943
    Abstract: The instant invention relates to an improved process for the production of cellular or non-cellular polyurethane urea elastomers, in which diamines which contain ester groups are used as chain lengthening agents. A characteristic feature of the process according to the invention is the use of salts of aromatic diaminocarboxylic or sulphonic acids as a portion of the chain lengthening component. Elastomers produced by this process are distinguished by their improved mechanical properties, in particular their increased tensile strength and tear propagation resistance as well as their reduced permanent elongation.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: January 9, 1979
    Assignee: Bayer Aktiengesellschaft
    Inventors: Johannes Blahak, Kuno Wagner, Jan Mazanek, Peter Haas
  • Ball and process and composition of matter for production thereof
    Patent number: 4123061
    Abstract: A polyurethane golf ball is disclosed. The golf ball comprises a core and a cover at least one of which is a polyether urethane prepolymer with a curing agent selected from the group consisting of trifunctional polyols, tetrafunctional polyols and amine-type curing agents having at least two reactive amine groups.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: October 31, 1978
    Assignee: Acushnet Company
    Inventor: Warren M. Dusbiber