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:
May. 04, 1999
Filed:
Feb. 21, 1997
David James Tracy, Plainsboro, NJ (US);
Ruoxin Li, Plainsboro, NJ (US);
Rhodia Inc., Cranbury, NJ (US);
Abstract
Novel nonylphenol nonionic gemini surfactants are extremely effective emulsifiers for oil-in-water emulsions that provide improved detergency at even low concentration levels and are characterized by the formula: ##STR1## wherein R and R.sub.1 are both either H or a C.sub.4 -C.sub.22 alkyl, aryl, or alkylaryl with the stipulation that they cannot both be H at the same time; and R.sub.2 is independently --COR.sub.3 CO--, --CH.sub.2 N(R.sub.4)CH.sub.2 --; CH.sub.2 N(R.sub.5)R.sub.6 (R.sub.5)NCH.sub.2 --, or R.sub.7 --D--R.sub.7 wherein R.sub.3 independently represents a C.sub.1 -C.sub.6 alkyl, branched alkyl or aryl; R.sub.4 represents a C.sub.1 to C.sub.4 alkyl, aryl, alkylaryl, hydroxy alkyl, haloalkyl or H, R.sub.5 represents a C.sub.1 to C.sub.10 alkyl or aryl and R.sub.6 independently represents a C.sub.1 to C.sub.10 alkyl, aryl, or alkylaryl, R.sub.7 is a C.sub.2 to C.sub.4 alkyl and D independently represents --S--, --SO-- and SO.sub.2 with the stipulation that R.sub.5 and R.sub.6 can form a heterocyclic ring; EO represents ethylene oxy-radicals, x and y are whole numbers and x+y equals a number from 2 to 200 inclusive.