Title:
FLAME RETARDANT, PREPARATION METHOD THEREFOR, AND RIGID POLYURETHANE FOAM
Document Type and Number:
WIPO Patent Application WO/2024/093849
Kind Code:
A1
Abstract:
The present disclosure relates to the technical field of flame retardants, in particular to a flame retardant, a preparation method therefor, and rigid polyurethane foam. The flame retardant of the present invention comprises a composite additive-type flame retardant and a composite reactive-type flame retardant. The composite additive-type flame retardant comprises the following components in parts by weight: 1-80 parts of an inorganic flame retardant, 1-75 parts of a phosphorus halogen flame retardant, and 5-60 parts of an organophosphorus flame retardant. The composite reactive-type flame retardant comprises the following components in parts by weight: 20-100 parts of bis(4-hydroxybutyl)phenyl phosphate and 30-150 parts of 2-carboxyethyl phenyl ethylene glycol hypophosphite. The mass ratio of the composite additive-type flame retardant to the composite reactive-type flame retardant is 100:60 to 100:150. The flame retardant of the present invention can improve the flame-retardant effect of rigid polyurethane foam without affecting the mechanical properties of the rigid polyurethane foam.
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Inventors:
ZHANG CHUNYU (CN)
LI BENHUAI (CN)
LIANG YONGJIU (CN)
DONG DEWEN (CN)
LI BENHUAI (CN)
LIANG YONGJIU (CN)
DONG DEWEN (CN)
Application Number:
PCT/CN2023/127324
Publication Date:
May 10, 2024
Filing Date:
October 27, 2023
Export Citation:
Assignee:
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD (CN)
International Classes:
C08K3/22; C08G18/32; C08G18/34; C08K3/34; C08K5/521; C08K5/523; C08G101/00
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (Floor 12 Left Bank Community No. 68 West Beisihuan RoadHaidian District, Beijing 0, CN)
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