Title:
METHOD FOR PREPARING ACRYLATE COMPOSITE GLUE BY SOAP-FREE EMULSION POLYMERIZATION
Document Type and Number:
WIPO Patent Application WO/2022/237025
Kind Code:
A1
Abstract:
Disclosed is a method for preparing an acrylate composite glue by soap-free emulsion polymerization. The acrylate composite glue is prepared by soap-free emulsion polymerization, acrylic block oligomers having emulsifying properties are polymerized by RAFT active free radical polymerization, and then semi-continuous emulsion polymerization is performed by using acrylic block oligomer-emulsified acrylate monomers, thereby overcoming defects that conventional small molecular emulsifiers tend to migrate to a surface of a glue film to form a weak interface layer leading to reduced bonding strength and poor water resistance and the like. By using n-pentanol as a chain transfer agent, the molecular weight of a polymer can be reduced to increase the fluidity and composite uniformity of a glue, and the surface tension of the emulsion can also be reduced, improving the coating wettability and leveling of the acrylate composite glue emulsion. The acrylate composite glue is suitable for the compounding of soft packaging film materials such as plastic-plastic, aluminum-plastic, and PET-VMPET, and has high composite strength, the composite film cannot be torn apart, and the composite film still cannot be torn apart after being soaked in a water bath at 60℃ for 72 hours.
Inventors:
SUN DAWEI (CN)
DU ZHIJIAN (CN)
DING ZHUANG (CN)
GAO QUANWEI (CN)
DU ZHIJIAN (CN)
DING ZHUANG (CN)
GAO QUANWEI (CN)
Application Number:
PCT/CN2021/118108
Publication Date:
November 17, 2022
Filing Date:
September 14, 2021
Export Citation:
Assignee:
JIANGSU JINGHONG NEW MATERIALS TECH CO LTD (CN)
International Classes:
C09J151/00; C08F2/38; C08F220/14; C08F220/18; C08F220/20; C08F287/00
Foreign References:
| CN113025243A | 2021-06-25 | |||
| CN1740257A | 2006-03-01 | |||
| EP1448611A2 | 2004-08-25 | |||
| CN107828025A | 2018-03-23 | |||
| JP2005089518A | 2005-04-07 |
Other References:
NICOLAS GAILLARD, ALAIN GUYOT, JEROME CLAVERIE: "Block copolymers of acrylic acid and butyl acrylate prepared by reversible addition-fragmentation chain transfer polymerization: Synthesis, characterization, and use in emulsion polymerization", JOURNAL OF POLYMER SCIENCE PART A: POLYMER CHEMISTRY, JOHN WILEY & SONS, INC., US, vol. 41, no. 5, 1 March 2003 (2003-03-01), US , pages 684 - 698, XP055431377, ISSN: 0887-624X, DOI: 10.1002/pola.10606
Attorney, Agent or Firm:
BEIJING FINELAND IP FIRM (CN)
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