Title:
PROCESS FOR CONTINUOUS PRODUCTION OF FOAMS USING AN AUXILIARY INLINE MIXER
Document Type and Number:
WIPO Patent Application WO/2022/198642
Kind Code:
A1
Abstract:
A method to improve the quality of a foam produced in a process for continuous production of foams using a surfactant with higher molecular weight as an additive in an aqueous polymer dispersion, the process comprises a step of foaming a mixture of an aqueous polymer dispersion and the surfactant, and the mixture is mixed in a foaming machine with a mixing head line speed of less than 4 m/s; wherein the process additionally comprises a step of mixing the foam obtained from the foaming machine in an auxiliary inline mixer connected to the foaming machine, at a mixing head line speed of 5～50 m/s. A process for continuous production of foams and a continuous production line are also provided.
Inventors:
LE YECHEN (CN)
ZHU ZHENG (CN)
HU LEIHONG (CN)
BAO LIANG (CN)
ZHU ZHENG (CN)
HU LEIHONG (CN)
BAO LIANG (CN)
Application Number:
PCT/CN2021/083302
Publication Date:
September 29, 2022
Filing Date:
March 26, 2021
Export Citation:
Assignee:
EVONIK OPERATIONS GMBH (DE)
LE YECHEN (CN)
LE YECHEN (CN)
International Classes:
C08L75/04; B29C44/34; B29C44/36; C08J9/00; C08L33/08; B29K33/00; B29K75/00; C08G101/00
Domestic Patent References:
| WO2018015260A1 | 2018-01-25 | |||
| WO2019042696A1 | 2019-03-07 | |||
| WO2018015260A1 | 2018-01-25 |
Foreign References:
| CA2439930A1 | 2002-09-19 | |||
| JPS5850581B2 | 1983-11-11 | |||
| US20200207938A1 | 2020-07-02 | |||
| US20200091472A1 | 2020-03-19 | |||
| US20150284902A1 | 2015-10-08 | |||
| US20060079635A1 | 2006-04-13 | |||
| CN109476949A | 2019-03-15 | |||
| CN111050897A | 2020-04-21 | |||
| EP16180041A | 2016-07-19 |
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LIMITED (CN)
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