Title:
HEAT STABILIZER FOR POLYMER PROCESSING USING PHOSPHATE WITH SUPPRESSED CRYSTALLINITY, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2022/086010
Kind Code:
A1
Abstract:
The present invention relates to: a heat stabilizer for polymer processing, the heat stabilizer being represented by Aw(PO4)x(HPO4)yXz•nH2O; and a method for producing same. The heat stabilizer according to the present invention has excellent heat stability sufficient for preventing polymer discoloration during the processing of polymers such as PVC, and is expected to be applicable to various other polymers in addition to PVC. In addition, the present invention provides an effective method for producing a heat stabilizer that prevents discoloration during polymer processing, wherein: the crystallinity of metal phosphate is made lower as compared to that of the structure of existing metal phosphates by substituting various metal positive ions, changing the type and content of negative ions, and using various dispersants that can act as ligands; and particle size is reduced through rapid synthesis and pH control using a strong base.
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Inventors:
KIM SEONG CHEOL (KR)
THIRUKUMARAN PERIYASAMY (KR)
THIRUKUMARAN PERIYASAMY (KR)
Application Number:
PCT/KR2021/013965
Publication Date:
April 28, 2022
Filing Date:
October 13, 2021
Export Citation:
Assignee:
INDUSTRY ACADEMIC COOPERATION FOUNDATION OF YEUNGNAM UNIV (KR)
International Classes:
C08K3/32; C08J3/20; C08K3/014; C08L101/00
Foreign References:
| JP2007512401A | 2007-05-17 | |||
| KR100863285B1 | 2008-10-15 | |||
| JPS5983918A | 1984-05-15 | |||
| KR20170108948A | 2017-09-27 | |||
| JP2013536289A | 2013-09-19 |
Attorney, Agent or Firm:
HAEDAM IP GROUP (KR)
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