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:
Jun. 08, 1982
Filed:
Apr. 07, 1980
Applicant:
Inventor:
Peter C Street, Langho, GB;
Assignee:
Tenneco Chemicals, Inc., Piscataway, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21D / ; D21H / ; D21H / ; C09D / ;
U.S. Cl.
CPC ...
1621 / ; 162175 ; 162177 ; 162180 ; 106200 ; 106212 ; 106218 ; 427391 ; 427395 ; 524272 ; 524548 ;
Abstract
Stable aqueous dispersions which are useful as one-shot sizing agents for paper, i.e. which do not require the separate addition of a flocculating agent, are prepared by combining a rosin dispersion, aluminum sulfate, and an alkali in a prescribed manner. The dispersions may also contain an added stabilizer such as a starch derivative, hydroxyethyl cellulose, or polyvinyl pyrrolidone if desired. These compositions can be used for either internal or external sizing.