Patents Assigned to Beijing Jinbaodi Bio-Environmental Technology Ltd
  • Patent number: 7939599
    Abstract: This invention is a substantially completely biodegradable high starch polymer using completely biodegradable high polymer polyvinyl alcohol [PVOH] that is made to be compatible with starch. The two ingredients are mixed with the optional addition of elasticity enhancer and supplement agent to better the stability and durability of the products. During the mixing and heating process the starch molecular structures are randomized. The randomized starch molecules, the PVOH, the elasticity enhancer and the supplement then under go the process of co-polymerization. The mixture is then extruded, at a temperature that is above the crystallization temperature of the starch molecules, to form the first stage product, the pellets. The pellets can then be extruded into films using a traditional plastic film extruder.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: May 10, 2011
    Assignees: Biostarch Technology PTE. Ltd, Beijing Jinbaodi Bio-Environmental Technology Ltd
    Inventors: Chun Yang Ding, Yi Hua Zheng, Xian Zhang
  • Publication number: 20080153958
    Abstract: This invention is a substantially completely biodegradable high starch polymer using completely biodegradable high polymer polyvinyl alcohol [PVOH] that is made to be compatible with starch. The two ingredients are mixed with the optional addition of elasticity enhancer and supplement agent to better the stability and durability of the products. During the mixing and heating process the starch molecular structures are randomized. The randomized starch molecules, the PVOH, the elasticity enhancer and the supplement then under go the process of co-polymerization. The mixture is then extruded, at a temperature that is above the crystallization temperature of the starch molecules, to form the first stage product, the pellets. The pellets can then be extruded into films using a traditional plastic film extruder.
    Type: Application
    Filed: May 17, 2005
    Publication date: June 26, 2008
    Applicants: BIOSTARCH TECHNOLOGY PTE LTD, BEIJING JINBAODI BIO-ENVIRONMENTAL TECHNOLOGY LTD
    Inventors: Chun Yang Ding, Yi Hua Zheng, Xian Zhang