Flame retardant waterborne polyurethane resin

Abstract

The invention discloses flame retardant waterborne polyurethane resin which comprises a component A and a component B. The component A is prepared from the following ingredients in parts by weight: 30-50 parts of diethylene glycol phthalic anhydride polymer, 40-60 parts of polybutylene glycol, 15-30 parts of diphenylmethane diisocyanate, 5-10 parts of chain extender, 2-5 parts of triethylamine, 1-2 parts of dibutyltin dilaurate, and 300-500 part of water. The component B is prepared from the following ingredients in parts by weight: 10-20 parts of melamine polyphosphate, 20-30 parts of piperazine phosphate, 10-20 parts of piperazine pyrophosphate, 10-20 parts of tetraphenyl pyrophosphate, 30-40 parts of halogen alkyl phosphate, and 10-20 parts of bisphenol A phosphate. The weight mixing ratio of the component A to the component B is 1:(0.5-1). The flame retardant waterborne polyurethane resin, disclosed by the invention, is high in flame retardance and high in film-forming property.

Description

technical field [0001] The invention relates to a flame-retardant waterborne polyurethane resin. Background technique [0002] Existing water-based polyurethane resins have basically no flame retardancy. In order to achieve flame retardancy, a large amount of flame retardants must be added, and adding a large amount of flame retardants will inevitably affect product performance. If the amount of flame retardant added is large, the amount of film-forming resin is relatively small, and the fastness is poor; in order to improve the fastness, the amount of resin must be increased, the amount of flame retardant is relatively reduced, and the flame retardancy is reduced. Contents of the invention [0003] The object of the present invention is to provide a flame-retardant water-based polyurethane resin, aiming at solving the above problems. [0004] In order to achieve the above object, the technical solution of the present invention is to design a flame-retardant water-based p...

AI Technical Summary

Problems solved by technology

[0002] Existing water-based polyurethane resins basically have no flame retardancy. In order to achieve flame retardancy, a large amount of flame retardants must be added, and the addition of a large amount of flame retardants will inevitably affect product performance.

If the amount of flame retardant added is large, the amount of film-forming resin is relatively small, and the fastness is poor; in order to improve the fastness, the amount of resin must be increased, the amount of flame retardant is relatively reduced, and the flame retardancy is reduced