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:
Nov. 16, 1999
Filed:
Jan. 16, 1998
Applicant:
Inventor:
Alice P Hudson, Riviera Beach, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C05C / ; A01N / ; B05D / ;
U.S. Cl.
CPC ...
71 28 ; 71 6402 ; 71 6407 ; 71 6412 ; 71 6411 ; 71 6413 ; 427212 ; 427213 ;
Abstract
Sealant compositions for sulfur coated fertilizer particles are mixtures of wax materials and additives which provide improved moisture barrier properties and abrasion resistance. The sealants have penetration values measured by ASTM D-1321 of at least 20 at 25.degree. C., and congealing points measured by ASTM D-938 of between about 50.degree. C. and about 100.degree. C. The sealed fertilizer particles are conditioned with particulate materials with a surface area of at least about 2 m.sup.2 /g and an oil absorption of at least about 100%. A method for the production of abrasion resistant sulfur coated fertilizers is also disclosed.