Abstract: The oxidation hair dye composition contains from 0.01 to 4.0 percent by weight of a developer substance including at least one diaminopyrazole of the formula (I) ##STR1## wherein R.sup.1 is selected from the group consisting of hydrogen, an alkyl group having from 1 to 6 carbon atoms, a hydroxyalkyl group having from 2 to 4 carbon atoms and a substituted or unsubstituted benzyl group, and R.sup.2 and R.sup.3, independently, are each selected from the group consisting of hydrogen, an alkyl group having from 1 to 6 carbon atoms and a hydroxyalkyl group having from 2 to 4 carbon atoms; and from 0.01 to 4.0 percent by weight of a coupler substance including at least one m-phenylenediamine selected from the group consisting of N-(3-dimethylamino)phenyl urea and 3-(N-methylsulfonyl)amino-N,N-dimethylaniline.
Type:
Grant
Filed:
August 13, 1996
Date of Patent:
February 17, 1998
Assignee:
Wella Aktiengesellschaft
Inventors:
Isolde Loewe, Alexa Weinges, Wolfgang R. Balzer, Stefan Gerstung
Abstract: Disclosed are hair coloring compositions comprising coloring agent and disaccharide. The coloring agent preferably comprises a first oxidizing agent for bleaching the hair, a dyeing agent for adding color to the hair and a second oxidizing agent for developing the dyeing agent. Also disclosed are methods for altering the color of hair to a predetermined degree comprising (a) applying to the hair a hair coloring composition, said composition comprising a coloring agent and a disaccharide; (b) allowing said composition to remain in contact with the hair for a time sufficient to achieve the predetermined degree of color alteration; and (c) substantially removing said composition from the hair.
Type:
Grant
Filed:
June 7, 1995
Date of Patent:
October 1, 1996
Assignee:
Preemptive Advertising, Inc.
Inventors:
Harold R. Crews, Roy M. Evans, Jr., Joseph O. Rubert
Abstract: A surface of an article, such as an optical element, formed of a polycarbonate-polyester copolymer, is subsequently tinted to a predetermined degree by first subjecting said surface to ultraviolet radiation of predetermined intensity for a predetermined period of time.
Type:
Grant
Filed:
March 23, 1994
Date of Patent:
August 22, 1995
Assignee:
Gentex Optics, Inc.
Inventors:
Paresh V. Kitchloo, Robert A. Sallavanti