Method of synthesizing polyol acetate by using catalyst of ionic liquid heteropoly acid
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United States of America Patent
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Jun 16, 2015
Issued Date -
N/A
app pub date -
Feb 7, 2012
filing date -
Oct 27, 2011
priority date (Note) -
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Abstract
The present invention uses a nitrogen-containing organic compound to be reacted with an alkyl sultone to obtain a zwitterion compound. The zwitterion compound is reacted with a heteropoly acid (HPA) to obtain an ionic liquid HPA (IL-HPA). The IL-HPA is used for acetylation of polyol and HOAc for obtaining polyol acetate. The IL used in the reaction can be recycled. Thus, problems of product separation, waste acid handling, and corrosion of facilities are solved and production through esterification is improved with a green catalysis.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
CPC CORPORATION TAIWAN | KAOHSIUNG CITY 81126 |
International Classification(s)

- 2012 Application Filing Year
- C07C Class
- 3137 Applications Filed
- 2508 Patents Issued To-Date
- 79.95 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Chang, Jen-Chun | Chiayi, TW | 19 | 94 |
# of filed Patents : 19 Total Citations : 94 | |||
Huang, Ming-Yu | Chiayi, TW | 22 | 39 |
# of filed Patents : 22 Total Citations : 39 | |||
Lin, Jann-Chen | Chiayi, TW | 16 | 24 |
# of filed Patents : 16 Total Citations : 24 | |||
Wu, Jung-Chung | Chiayi, TW | 16 | 79 |
# of filed Patents : 16 Total Citations : 79 |
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Patent Citation Ranking
- 0 Citation Count
- C07C Class
- 0 % this patent is cited more than
- 10 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 16, 2026 |
Fee | Large entity fee | small entity fee | micro entity fee |
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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 |
Full Text

Legal Events
Date | Code | Event | Description |
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Oct 05, 2020 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jun 01, 2020 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Dec 16, 2019 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Oct 16, 2015 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Apr 24, 2012 | I | Issuance | |
Apr 04, 2012 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Dec 05, 2011 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Oct 08, 2009 | P | Published | |
May 12, 2007 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GAUDREAU, MARC;IBRAHIM, FAISAL;REEL/FRAME:019609/0878 Owner name: FORENSINK CORPORATION INC., CANADA Effective Date: May 12, 2007 |
Nov 17, 2005 | F | Filing | |
Nov 17, 2004 | PD | Priority Date |

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