• 专利标题:   Degradable polyolefin plastic used for preparing film sheet, polyolefin comprising polyethylene, polypropylene, ethylene-vinyl acetate copolymer or their derivative, and degradation promoting agent comprising photocatalyst, chemical catalyst or biological catalyst.
  • 专利号:   CN115594905-A
  • 发明人:   LIN T
  • 专利权人:   GIO INT ENTERPRISE CO LTD
  • 国际专利分类:   C08J005/18, C08K003/04, C08K003/08, C08K003/22, C08K003/30, C08K005/29, C08L001/02, C08L023/06, C08L023/08, C08L023/12, C08L003/02, C08L005/00, C08L005/08, C08L067/04
  • 专利详细信息:   CN115594905-A 13 Jan 2023 C08L-023/06 202318 Chinese
  • 申请详细信息:   CN115594905-A CN10718001 28 Jun 2021
  • 优先权号:   CN10718001

▎ 摘  要

NOVELTY - A degradable polyolefin plastic comprises more than 90 wt.% polyolefin comprising polyethylene, polypropylene, ethylene-vinyl acetate copolymer or their derivative, and 10 wt.% or less degradation promoting agent comprising catalysts including a photocatalyst, a chemical catalyst or a biological catalyst. The photocatalyst contains tungsten oxide, titanium oxide, copper sulfide, graphite, graphene, carbon tube, gold and/or silver. The chemical catalyst comprises a compound of metal carboxyl and aliphatic polyhydroxycarboxylic acid, a compound of metal carboxyl and inorganic salt, and/or a complex of transition metal. The biological catalyst comprises chitin, starch, cellulose, glucose derivatives, polysaccharides, poly-β-hydroxybutyl, carbodiimide and/or ester. The degradable polyolefin plastic has elastic strength of more than 600 kg/cm2, impact strength of more than 38 kgcm/cm, and degradation rate of more than 90% within 180 days under the soil burial method ASTM D5988. USE - Degradable polyolefin plastic is used for preparing film sheet (claimed). ADVANTAGE - The degradable polyolefin plastic has excellent mechanical, physical and weather resistance for a longer shelf life time performance.