Patent ID: 11945988
Assignee: SUEZ GROUPE
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  A  B | IPC A  C

Claim 19:
20. A method for producing a flame retardant product as claimed in claim 1, comprising the following successive steps:
a) preparation of an aqueous solution comprising an intumescent agent, a hydroxylated carbon-based component and water, so as to form an intumescent system generating, under the effect of heat, a carbonaceous foam,
b) mixing of a thixotropic agent with the solution obtained in step a), in a quantity such that the weight content of the thixotropic agent in the solution ranges between 5% and 20%,, the solution obtained at the end of step a) being such that the total content by weight of the hydroxylated carbon-based component and the intumescent agent is greater than 95% of the saturation weight content at which saturation is reached,, the thixotropic agent being selected so that an addition of water to the solution obtained at the end of step b) increases the viscosity thereof in the absence of shear, and so that shear applied to the solution obtained at the end of step b) decreases the viscosity thereof.