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:
Sep. 08, 2009
Filed:
Jun. 12, 2003
Kenneth Sundberg, Abo, FI;
John Roberts, Hyde, GB;
Claes Zetter, Turku, FI;
Guomei Peng, Clitheroe, GB;
Kenneth Sundberg, Abo, FI;
John Roberts, Hyde, GB;
Claes Zetter, Turku, FI;
Guomei Peng, Clitheroe, GB;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The invention relates to the sizing of paper and board using alkenyl succinic anhydride (ASA). The invention provides a sizing composition which comprises an aqueous emulsion of an ASA wherein the ASA incorporates a maximum of 1% by weight (preferably a maximum of 0.5% by weight) of polymeric residues. The composition may incorporate less than 0.5% by weight of olefins. Paper sizing compositions in accordance with the invention provide enhanced resistance to penetration of the edges of paper and board by agents such as hot hydrogen peroxide and lactic acid.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile