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:
May. 26, 1981
Filed:
Mar. 10, 1980
Morton W Rutenberg, North Plainfield, NJ (US);
Thomas R Molnar, Edison, NJ (US);
National Starch and Chemical Corporation, Bridgewater, NJ (US);
Abstract
Guar gum is prepared by hydrating guar splits with sufficient water to provide a total moisture content of 25-80%, extruding the hydrated splits, and grinding them, while wet, preferably to a finely divided state. For most uses the ground gum is then dried, preferably in a flash dryer. Typically the hydration is carried out at 5.degree.-95.degree. C. for at least 1/4 hour; the preferred conditions are 20.degree.-80.degree. C. for 0.5 to 2 hours. The extrusion is conveniently carried out in an extruder provided with a rotatable screw for transporting and working the hydrated splits. Typically grinding is carried out in a hammermill.