Method for synthesizing sucrose-6-ester

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11142542
APP PUB NO 20210002317A1
SERIAL NO

16981986

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method for synthesizing sucrose-6-ester includes: (a) in the presence of a polar aprotic solvent, contacting an organic phosphine compound represented by formula I with sucrose and an organic tin compound; (b) removing water to obtain a reaction liquid containing a tin-sucrose adduct; and (c) contacting the reaction liquid containing the tin-sucrose adduct with an acid anhydride compound to prepare a sucrose-6-ester. In formula I, R1, R2, and R3 each are a linear or branched alkyl having 1 to 20 carbon atoms, a cycloalkyl having 3 to 10 carbon atoms, or an aryl having 6 to 10 carbon atoms; moreover, the R1, R2, and R3 are identical groups, partially identical groups, or different groups from each other. According to the method, the reaction conversion rate and selectivity are greatly improved; moreover, it is easy to realize industrial application.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • ZHEJIANG NHU COMPANY LTD.; SHANDONG NHU FINE CHEMICAL SCIENCE AND TECHNOLOGY COMPANY LTD.

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cai, Jiang Zhejiang, CN 3 3
Ma, Kaifeng Zhejiang, CN 1 0
Wang, Yugang Shandong, CN 57 6248
Wei, Xiaoqiao Zhejiang, CN 9 14
Yang, Yunhan Zhejiang, CN 1 0
Zhou, Yougui Shandong, CN 3 0

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Apr 12, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Apr 12, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 12, 2033
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00