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:
Oct. 28, 1980
Filed:
Dec. 18, 1978
Gunther H Elfers, Grosse Ile, MI (US);
The Diversey Corporation, Northbrook, IL (US);
Abstract
This invention relates to defoamed compositions and processes for inhibiting foaming in a liquid system containing water. Maleic ester copolymers in admixture with a mineral oil are particularly useful in pulp and paper manufacturing applications. The defoamers of the invention are compositions comprising mineral oil and a polymer which is an alkyl ester of the reaction product of a maleic compound and a monoethylenically unsaturated monomer copolymerizable therewith. The alkyl ester has the formula: ##STR1## wherein X equals hydrogen, alkyl of 1 to about 30 carbon atoms, phenyl, ##STR2## wherein R' is hydrogen or alkyl of 1 to about 30 carbon atoms, R' is alkyl of 1 to about 30 carbon atoms; R is hydrogen or substituted or unsubstituted alkyl or alkyl ethers of about 8 to about 30 carbon atoms, wherein at least one R is said alkyl, y is an integer of 1-5, and the sum of m and n are such that the polymer has a molecular weight of about 1000 to 100,000; the molar ratio of m:n being respectively about 50:50 to about 100:0.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile