Chlorinated siliceous materals as fillers and reactants
AssigneeGerdec
InventorsJean Mercier, Marc Della Faille, Claude Bleiman
Life of this patent
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Abstract
A material having a siliceous framework of a phyllosilicate in which 5--80% by weight of the octahedral layers are removed and chlorine atoms are linked to the framework through Si--Cl bonds are used as fillers in the preparation of polymers or are reacted with organic compounds by substituting the Cl, these organic compounds having a polymerizable portion in the molecule.
Claims15
A process which comprises reacting a chlorinated mineral with at least one polymerizable monomer in the presence of a free radical initiator, said chlorinated mineral having a siliceous framework of a phyllosilicate in which 5-80% by weight of the octahedral layers are removed and chlorine atoms linked to the said framework through Si--Cl bonds.
A process which comprises reacting a chlorinated mineral with at least one organic compound having:
- a. at least one function capable of reacting with the chlorine atoms of the chlorinated mineral so as to graft said organic compound onto said mineral;
- and
- b. at least one polymerizable double bond, said chlorinated mineral having the siliceous framework of a phyllosilicate in which 5-80% by weight of the octahedral layers are removed and chlorine atoms linked to the said framework through Si--Cl bonds.
A material which comprises a siliceous framework of a phyllosilicate in which 5-80% by weight of the octahedral layers are removed with chlorine atoms linked to the said framework through Si--Cl bonds, said material having organic radicals grafted upon the said siliceous framework, said organic radicals having at least one group enabling a later polymerization and grafted onto the framework by substitution of a part of the chlorine atoms.
Dependencies are inferred from the claim text.