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:
Jul. 24, 1984
Filed:
Apr. 21, 1983
Applicant:
Inventor:
John W Gowan, Jr, Mt. Pleasant, SC (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C09F / ;
U.S. Cl.
CPC ...
106238 ; 260101 ;
Abstract
A series of inorganic salts are disclosed for their efficacy in lowering surfactant requirements and foam in aqueous dispersed rosin size. The salts are best employed as additives to the surfactant prior to addition of surfactant to molten rosin during preparation of the aqueous dispersion. Selected chlorides, fluorides, nitrates and sulfates of aluminum, calcium, cobalt, lead, magnesium, sodium and tin are disclosed as being effective within a range of about 0.01% to 0.1% by weight of rosin at a surfactant level of about 3.5%. Aluminum nitrate at a level of 0.04 to 0.055% by weight of the rosin, at a surfactant level of 3.5%, is preferred.