Patent · US Active

Slow and controlled release polymeric sulfur fertilizer containing multiple nutrient elements and method for preparing the same

US9051222B1 · kind B1 · utility

0Cited by

0References

10Claims

0Family size

Assignee

NORTH UNIVERSITY OF CHINA · CN

Inventors

Yaqing Liu · Changchun, CN
Guizhe ZHAO · Taiyuan, CN
Dongdong Cheng · Taiyuan, CN
Lifeng Zhou · Williamston, US
Denghui WU · Taiyuan, CN

Key dates

Filing date	Oct 21, 2014
Grant date	Jun 9, 2015
Priority date	—
Expiry date	Oct 21, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC05B17/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention provides a slow and controlled release polymeric sulfur fertilizer containing multiple nutrient elements. The slow and controlled release polymeric sulfur fertilizer is represented by the following formula, in which m=1-4, and n=100-210. The element sulfur in the slow and controlled release polymeric sulfur fertilizer according to embodiments of the present invention has very high utilization rate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.