Patents Represented by Attorney Ricahrd E. L. Henderson

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  • Diaminoarylsulfones useful for the preparation of polyurethane elastomers
    Patent number: 4975516
    Abstract: This invention relates to diaminoarylsulfones of the formula ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 are independently C.sub.1 -C.sub.12 alkyl, that are useful as chain extenders in the preparation of polyurethane elastomers.
    Type: Grant
    Filed: January 10, 1989
    Date of Patent: December 4, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus-Peter Heise, Gerhard Grogler, Karlfried Wedemeyer, Dieter Dieterich