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Patent Searching and Data


Title:
MODIFIED PHENOLIC RESIN ADHESIVE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/002179
Kind Code:
A1
Abstract:
A preparation method for a modified phenolic resin adhesive, comprising the following steps: (1) mixing papermaking waste, a catalyst and water, and reacting with formaldehyde to obtain modified papermaking waste; (2) mixing a mixture of phenol and the catalyst with formaldehyde, and reacting to obtain a material A; and (3) reacting the material A with the modified papermaking waste until the dripping time for -4 cups of the material obtained by means of the reaction is 18-22 s at 40ºC. The sequence of steps (1) and (2) is not limited. The papermaking waste and formaldehyde are first subjected to a primary reaction, so that the reaction activity of the structure is improved, and the reaction efficiency is improved. The papermaking waste is used as a raw material, so that the consumption of phenol and formaldehyde is reduced, and waste is turned into wealth. In addition, the prepared phenolic resin adhesive is strong in intermolecular force, the volatilization amount of phenol and formaldehyde is reduced, and the hot-press temperature is also reduced.

Inventors:
SH QUENTIN (CN)
SUN HAIQIANG (CN)
ZHAO JI (CN)
Application Number:
PCT/CN2021/103929
Publication Date:
January 06, 2022
Filing Date:
July 01, 2021
Export Citation:
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Assignee:
SHANGHAI CHANGFA NEW MAT CO LTD (CN)
International Classes:
C09J161/14; B27D1/04; B27D1/08; B27G11/00; C08G8/28
Foreign References:
CN111944464A2020-11-17
CN101348698A2009-01-21
CN111154437A2020-05-15
GB1382964A1975-02-05
CN103113840A2013-05-22
US4324747A1982-04-13
Attorney, Agent or Firm:
XI'AN BESHININGQIN INTELLECTUAL PROPERTY AGENCY (CN)
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