US 6,787,575 B1 · Method for processing a mineral fillers with a phosphate, said fillers and their uses

Abstract

The invention relates to the technological sector of mineral fillers used in the sector which manufactures polyurethane foams and in particular fillers of the carbonate, hydroxide, silicate, sulphate type and similar mineral fillers. The invention relates in particular to a method of treating mineral fillers of a specific grain size with the aid of treatment agents of the organic phosphate type, incorporating a de-agglomeration step, and optionally a selection step, with a view to improving the techniques used to manufacture polyurethane foams either by foaming without an auxiliary blowing agent or with a blowing agent such as CO2, and composite polyurethane, whilst reducing the time needed to mix this treated filler treated with the polyol and other reagents. Numerous applications for block foams or moulded foams, for mattresses and similar, the automotive industry, various industrial components, etc . . .

Claims37

Dependent claims

A process for treatment of a mineral charge characterized in that said charge

a) is treated with at least one treatment agent with the general formula (1):
with R1=either H or alkyl with C8 to C40 or aryl or alkylaryl or arylalkyl with C6 to C40,
with R2=either alkyl with C8 to C40 or aryl or alkylaryl or arylalkyl with C6 to C40,
X=—CH2—CH2— or —CH(CH3)—CH2— or —CH2—CH(CH3)— or —(CH2)5—CO—,
Y=—CH2—CH2— or —CH(CH3)—CH2— or —CH2—CH(CH3)— or —(CH2)5—CO—,
X and Y being identical or different,
(m+n) ranging from 0 to 60 (including limits) as well as (p+q) with 0≦m+n≦60 and 0≦p+q≦60 when X=Y=—CH2—CH2— and with (1≦m≦10 and 1≦p≦10) and (0≦n≦59 and 0≦q≦59) when X is different from Y;
b) undergoes a deagglomeration stage;
and
c) is mixed with a polyol.

7 more elements

Dependencies are inferred from the claim text.

Method for processing a mineral fillers with a phosphate, said fillers and their uses

Life of this patent

Method for processing a mineral fillers with a phosphate, said fillers and their uses

Life of this patent

Abstract

Claims37