• US 4,119,634 A
  • Filed: 08/09/1977
  • Issued: 10/10/1978
  • Est. Priority Date: 08/11/1976
  • Status: Expired due to Term
First Claim
Patent Images

1. A bis-benzoxazolyl compound of the formula ##STR22## wherein R1, R2, R3 and R4 independently of one another are hydrogen;

  • halogen;

    C1 -C8 -alkyl;

    C1 -C4 -alkoxy;


    phenyl-C1 -C4 -alkyl;



    C1 -C4 -alkoxycarbonyl;

    C1 -C4 -alkylsulfonyl;

    carboxamide, or carboxamide substituted by C1 -C4 -alkyl, phenyl or phenyl-C1 -C4 -alkyl;

    or two adjacent radicals R1 -R4 taken together with the carbon atoms to which they are attached represent a benzene, cyclohexene or 3,3,5,5-tetramethylcyclopentene ring.

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