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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.:

US 4627889 B1

PDFFull Text
Date of Patent:
Dec. 09, 1986

Filed:

May. 23, 1983

Process for sizing paper with anionic hydrophobic sizing agents and

Applicant:
Inventors:

Michael Bernheim, Arlesheim, CH;

Hubert Meindl, Riehen, CH;

Peter Rohringer, Schonenbuch, CH;

Hans Wegmuller, Riehen, CH;

Dieter Werthemann, Basel, CH;

Assignee:

Ciba-Geigy Corporation, Ardsley, NY (US);

Attorneys:

Roberts; Edward McC.

Mansfield; Kevin T.

Primary Examiner:

Peter Chin

Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162158 ; 1621641 ; 1621681 ; 162175 ; 162179 ;
Abstract

Sizing agents which are novel compounds and have at least one anionic or acidic group which is optionally in salt form and at least two hydrophobic substituents of which at least two of the most adjacent ones are bonded to each other with a bridging member which has at least 1 carbon atom and 2 hetero atoms, at least one sulfur atom being present as hetero atom, in particular sulfimides or bisulfimides of fatty acid derivatives, are highly suitable for use, together with commercially available retention aids, in a process for sizing paper or cardboard.

Find Patent Forward Citations

Bernheim, Michael. (1986). Process for sizing paper with anionic hydrophobic sizing agents and (U.S. Patent No. 4627889). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4627889

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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