Patents by Inventor Jing Jin Tsai

Jing Jin Tsai 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).

  • Method for improved the handling heat-resistance of the ethylene-vinyl alcohol copolymer
    Patent number: 7186775
    Abstract: The present invention relates to a method for increasing the heat-resistant of ethylene-vinyl alcohol copolymer (EVOH), the method is characterized by using a mixture of acetic acid, magnesium dihydrogen phosphate, and potassium dihydrogen phosphate at a certain ratio as an acid-treating solution in the acid-treating procedure of a process for preparing EVOH. The EVOH produced by the method of the present invention exhibits an excellent heat-resistance and does not become yellowing attributed to the elevated processing temperature. Also, the EVOH generated by the method of the present invention exhibits a uniform heat-resistance since the additives are dispersed evenly in the EVOH.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: March 6, 2007
    Assignee: Chang Chun Petrochemical Co., Ltd.
    Inventors: Jing Jin Tsai, Li Shing Lin, Huan Ming Chang, Kuang Hui Fan, Weng Shing Lin
  • Process for preparing nicotinic acid and catalyst used in the method
    Publication number: 20050222421
    Abstract: The present invention relates to a process for preparing nicotinic acid, which comprises directly subjecting a mixture of 3-methylpyridine, oxygen, and water to a vapor phase oxidation in the presence of a catalyst consisting of, as active ingredients, vanadium oxide (V2O5) and transition metal oxide both of which are supported on a carrier, to give the nicotinic acid, wherein crystal size of the active ingredients on the surface of the carrier is controlled in a range of from 40 to 200 nm through use of transition metal oxide. The present invention further relates to a catalyst used in the oxidation. In the method according to the present invention, the nicotinic acid can be obtained in a higher conversion and a higher selectivity. Therefore, the manufacturing cost can be reduced.
    Type: Application
    Filed: June 25, 2004
    Publication date: October 6, 2005
    Applicant: Chang Chun Petrochemical Co., Ltd.
    Inventors: Chih-Sheng Lu, Chao-Yang Lee, Shih-Chin Hsiung, Jing-Jin Tsai
  • Water resistant polyvinyl acetate aqueous emulsion for applying to wood material
    Publication number: 20040082706
    Abstract: The present invention relates to a water resistant polyvinyl acetate aqueous emulsion, which is useful as an adhesive for applying to wood material. The present polyvinyl acetate aqueous emulsion is free of formalin and exhibits excellent water resistance.
    Type: Application
    Filed: June 27, 2003
    Publication date: April 29, 2004
    Applicant: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Jing-Jin Tsai, Li-Shing Lin, Gan-Dar Fan
  • One-pot water-resistant polyvinyl acetate copolymer aqueous emulsion and it preparation
    Publication number: 20040082705
    Abstract: The present invention relates to a one-pot water-resistant polyvinyl acetate copolymer aqueous emulsion and its preparation. The one-pot water-resistant polyvinyl acetate copolymer aqueous emulsion of the present invention is prepared from emulsion co-polymerization of vinyl acetate monomer and an unsaturated functional silicon-containing monomer at atmospheric pressure to prepare a one-pot self-cross-linkable emulsion.
    Type: Application
    Filed: June 27, 2003
    Publication date: April 29, 2004
    Applicant: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Jing-Jin Tsai, Li-Shing Lin, Gan-Dar Fan