The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 1980
Filed:
Nov. 30, 1977
Russell I Steiner, Reading, PA (US);
Crompton & Knowles Corporation, New York, NY (US);
Abstract
The application is concerned with new pyrazolone compounds having the structure: ##STR1## wherein R is hydrogen or halogen (especially fluorine, bromine and chlorine) and R.sub.1 and R.sub.2 independently of one another are hydrogen or halogen (especially bromine and chlorine) and R.sub.3 is lower alkyl (especially methyl, ethyl, propyl and butyl). The compounds are useful in heat transfer printing of polyester fabrics and impart yellow shades thereto. The application discloses a method of making the new compounds and discusses the utilization of the compounds in the heat transfer printing of polyester fabrics, in the preparation of ink formulations, and in making transfer sheets for heat transfer printing.