Patents by Inventor Prerak Rajendrakumar CONTRACTOR

Prerak Rajendrakumar CONTRACTOR has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparing fatty acid chlorides and N-acyl amino acid salts
    Patent number: 11807598
    Abstract: The invention relates to a process for preparing fatty acid chlorides. In a subsequent step, the fatty acid chlorides can be used to prepare N-acyl amino acid salts. The process comprises the formation of a fatty acid chloride in an amine catalyzed reaction of a fatty acid with phosphorous trichloride, thionyl chloride or phosgene, preferably thionyl chloride. The process for preparing N-acyl amino acid salts further comprises the reaction of the fatty acid chloride with an amino acid or an amino ethane sulfonic acid.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: November 7, 2023
    Assignee: CLARIANT INTERNATIONAL LTD
    Inventors: Prerak Rajendrakumar Contractor, Raju Dayaram Patil, Jignalkumar Nurpeshkumar Soni
  • Preparation and use of high quality esterquats from rice bran fatty acids
    Patent number: 11773347
    Abstract: Esterquats find major applications as fabric softeners. After Tallow fatty acids and Palm oil fatty acids, fatty acids from sustainable sources like Rice bran fatty acids (RBFA) are desired. RBFA is formed as a by-product during refining of Rice bran oil and hence it is contained in the non edible portion of the oil. The production of high quality esterquats from this by-product is challenging, but the invention describes a process to produce high quality esterquats having low odour and a low acid value. This enhances easy formulation of various products and better customer acceptance. Liquid esterquats produced from RBFA enable e.g. cold processing for fabric softener formulations.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: October 3, 2023
    Assignee: CLARIANT INTERNATIONAL LTD
    Inventors: Sushant Dattaram Wadekar, Prerak Rajendrakumar Contractor
  • PROCESS FOR PREPARING FATTY ACID CHLORIDES AND N-ACYL AMINO ACID SALTS
    Publication number: 20210380520
    Abstract: The invention relates to a process for preparing fatty acid chlorides. In a subsequent step, the fatty acid chlorides can be used to prepare N-acyl amino acid salts. The process comprises the formation of a fatty acid chloride in an amine catalyzed reaction of a fatty acid with phosphorous trichloride, thionyl chloride or phosgene, preferably thionyl chloride. The process for preparing N-acyl amino acid salts further comprises the reaction of the fatty acid chloride with an amino acid or an amino ethane sulfonic acid.
    Type: Application
    Filed: October 30, 2019
    Publication date: December 9, 2021
    Applicants: Clariant International Ltd., Transpek Industry Limited
    Inventors: Prerak Rajendrakumar CONTRACTOR, Raju Dayaram PATIL, Jignalkumar Nurpeshkumar SONI
  • Preparation And Use Of High Quality Esterquats From Rice Bran Fatty Acids
    Publication number: 20210284932
    Abstract: Esterquats find major applications as fabric softeners. After Tallow fatty acids and Palm oil fatty acids, fatty acids from sustainable sources like Rice bran fatty acids (RBFA) are desired. RBFA is formed as a by-product during refining of Rice bran oil and hence it is contained in the non edible portion of the oil. The production of high quality esterquats from this by-product is challenging, but the invention describes a process to produce high quality esterquats having low odour and a low acid value. This enhances easy formulation of various products and better customer acceptance. Liquid esterquats produced from RBFA enable e.g. cold processing for fabric softener formulations.
    Type: Application
    Filed: July 10, 2019
    Publication date: September 16, 2021
    Applicant: Clariant International Ltd.
    Inventors: Sushant Dattaram WADEKAR, Prerak Rajendrakumar CONTRACTOR