Title:
RECYCLED POLYETHYLENE TEREPHTHALATE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/010891
Kind Code:
A1
Abstract:
A composition for production of injection-molded articles is made of recycled polyethylene terephthalate in an amount of over 90 wt%, a nucleation agent selected from salts of citrate acid, salts of carbonic acid, titanium oxide and mixtures thereof in an amount of 0.2-1 phr, and an impact modifier in the form of an unsaturated organic compound selected from acids, anhydrides, esters and metallic salts of at least one of the following: maleic, acrylic, methacrylic, itaconic, crotonic, alpha-methyl crotonic and cinnamic, in an amount of 2-4 phr. Optical brighteners, heat stabilizers and wax can also be added. The composition has high tensile strength, low shrinkage and high color stability, especially when compared to pure RPET.
Inventors:
LEUNG HING LUN (CN)
LEUNG HEI NGA (CN)
LEUNG HEI NGA (CN)
Application Number:
PCT/CN2022/087575
Publication Date:
February 09, 2023
Filing Date:
April 19, 2022
Export Citation:
Assignee:
DURAFLEX HONG KONG LTD (CN)
International Classes:
C08L67/02; B29B17/04; B29C45/76; C08K3/22; C08K3/26; C08K5/092; C08L33/02
Foreign References:
| JP2005105055A | 2005-04-21 | |||
| CN102321348A | 2012-01-18 | |||
| CN102010582A | 2011-04-13 | |||
| JP2005350509A | 2005-12-22 | |||
| US4483949A | 1984-11-20 | |||
| CN107974058A | 2018-05-01 |
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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