Title:
PREPARATION METHOD FOR THERMOPLASTIC POLYURETHANE MICRO AIR BAG ELASTOMER MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/024589
Kind Code:
A1
Abstract:
The present invention relates to a preparation method for a thermoplastic polyurethane micro airbag elastomer material, comprising the following steps: (1) feeding liquid raw materials such as diisocyanate molecules and a solid additive into a twin screw reactor, and carrying out a polymerization chain-extending reaction to obtain a hot melt having a high molecular weight; (2) pushing the hot melt having a high molecular weight into a mixing extrusion molding machine, and carrying out a reaction continuously to produce a macromolecular thermoplastic polyurethane melt; (3) continuously adding the obtained macromolecular thermoplastic polyurethane melt, polymer particles and the like into a foaming extrusion molding machine, and then extruding the material from a mold head to an underwater pelletizing chamber in the form of a high-pressure hot melt; (4) carrying the pellets by processing water through a multi-stage pressure relief and expansion processing water pipeline, delivering the pellets by the processing water to a separation machine, and carrying out separation, screening and drying to form a target product. Compared to existing technology, using the present invention allows for the preparation of the thermoplastic polyurethane elastomer material directly from liquid raw materials such as methylene diphenyl diisocyanate (MDI), so that energy consumption and material consumption are greatly lowered, the yield of a product is increased, and the production efficiency of the product is increased.
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Inventors:
CHEN QIAOJIAN (CN)
GUO YANGLONG (CN)
GUO YANGLONG (CN)
Application Number:
PCT/CN2018/088921
Publication Date:
February 07, 2019
Filing Date:
May 30, 2018
Export Citation:
Assignee:
NANTONG DE NEW MAT CO LTD (CN)
International Classes:
C08L75/08; C08K3/04; C08K3/26; C08K3/34; C08K3/36; C08K5/02; C08K7/24; C08L27/06; C08L51/00; C08L67/00; C08L75/06; C08L77/00
Foreign References:
| CN107383854A | 2017-11-24 | |||
| CN106084744A | 2016-11-09 | |||
| CN106832887A | 2017-06-13 | |||
| CN106366286A | 2017-02-01 | |||
| US20030138621A1 | 2003-07-24 |
Other References:
See also references of EP 3663359A4
Attorney, Agent or Firm:
SHANGHAI KESHENG INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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