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. 08, 1988
Filed:
Jan. 08, 1986
Applicant:
Inventors:
Assignee:
Lever Brothers Company, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D / ; C11D / ;
U.S. Cl.
CPC ...
252135 ; 25217414 ; 252530 ; 252534 ; 252537 ;
Abstract
A spray-dried detergent powder contains from 15 to 40% by weight of anionic surfactant, from 20 to 70% by weight of sodium carbonate, from 5 to 20% by weight of sodium silicate and from 1 to 7.5% by weight of sodium bicarbonate, the weight ratio of sodium bicarbonate to sodium silicate being within the range of from 0.20:1 to 0.45:1. Optionally further sodium bicarbonate (up to 15% by weight) is postdosed to the spray-dried powder. The benefits of the invention are improved powder properties and, when further sodium bicarbonate is postdosed, mildness to hands.