C - Chemistry – Metallurgy – 09 – C
Patent
C - Chemistry, Metallurgy
09
C
C09C 3/08 (2006.01) B29C 44/46 (2006.01) C08G 65/26 (2006.01) C08G 65/335 (2006.01) C08K 9/04 (2006.01) C08L 75/04 (2006.01) C09C 1/02 (2006.01) C09D 17/00 (2006.01)
Patent
CA 2336169
The invention concerns mineral fillers used for making polyurethane foams, and in particular carbonate, hydroxide, silicate, sulphate fillers, and similar mineral fillers. The invention concerns in particular a method for processing mineral fillers with specific particle size distribution using treating agents such as organic phosphate, including a disaggregation step, an optionally a selection step, so as to improve the techniques for manufacturing polyurethane foams either by foaming without swelling auxiliary or with swelling auxiliary, such as CO2, and composite polyurethane, by reducing the time for mixing said processed filler with polyol and other reagents. The invention has numerous uses such as for making block foams or moulded foams, for mattresses and the like, in the car manufacturing industry, for making various industrial parts, etc.
L'invention concerne le secteur technique des charges minérales utilisées dans le secteur de la fabrication des mousses de polyuréthanne, et notamment les charges de type carbonate, hydroxydes, silicates, sulfates, et charges minérales analogues. L'invention concerne notamment un procédé de traitement de charges minérales de granulométrie particulière à l'aide d'agents de traitement de type phosphate organique, incluant une étape de désagglomération, et éventuellement une étape de sélection, dans le but d'améliorer les techniques de fabrication de mousses de polyuréthanne soit par moussage sans auxiliaire de gonflement ou avec auxiliaire de gonflement comme le CO2, et de polyuréthanne composites, réduisant le temps de mélange de la charge ainsi traitée avec le polyol et les autres réactifs. Nombreuses applications pour les mousses bloc ou mousses moulées, pour matelas et analogues, à l'industrie automobile, diverses pièces industrielles, etc.
Blanchard Pierre
Fichou Jean-Pierre
Husson Maurice
Ravet Georges
Omya Sa
Omya Sas
Robic
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