Patents by Inventor Heinrich Uhlig

Heinrich Uhlig has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4331442
    Abstract: Process for dyeing textile materials of cellulose, by means of direct dyestuffs or reactive dyestuffs, by padding with aqueous dyeing liquors which contain cyclic carboxylic acid amides of the formula ##STR1## in which R represents a hydrogen atom, a C.sub.1 -C.sub.4 -alkyl radical or a C.sub.1 -C.sub.4 -hydroxyalkyl radical andA represents an alkylene radical required to complete a five-membered to seven-membered ring system and optionally substituted by halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl andn is 0 or 1,and, optionally, glycol compounds of the formula ##STR2## in which R' and R"' independently of one another represent hydrogen, a C.sub.1 -C.sub.5 -alkyl group or an acetyl group,R" represents hydrogen or methyl,n represents a number from 0 to 2 andX represents an oxygen atom or a sulphur atom, and fixing of the dyestuffs.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: May 25, 1982
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinrich Uhlig, Klaus Langheinrich, Udo-Winfried Hendricks