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US 11,691,917 B2Granted
Compositions comprising an acrylic polymer and processes of preparing the same
AssigneeCaesarstone Ltd.
InventorsErez Margalit, Boris Gorelik, Alon Golan, Yaacov Ron, Ido Winer
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Abstract
Composites made of a cross-linked acrylic polymer and an inorganic aggregate and/or mineral, with the cross-linked acrylic polymer being present at a concentration of 5% to 17%, by weight, are disclosed. Processes of preparing the composites are also disclosed.
Claims18
A composite comprising:
- (a) an acrylic polymer resin, and (b) an inorganic aggregate, wherein said acrylic polymer resin is present in an amount of 7 to 15% by weight of said composite, and wherein the acrylic polymer resin comprises monomeric units selected from acrylate, methacrylate or any derivative thereof and monomers of at least one of, methacrylic acid or acrylic acid and at least 15% by weight polymethyl methacrylate (PMMA).
A method for obtaining a composite comprising an acrylic polymer and at least one inorganic aggregate, the method comprising the steps of:
- a. mixing a plurality of acrylic monomers, selected from acrylate monomers, methacrylate monomers or any derivative thereof at least one of methacrylic acid monomers or acrylic acid monomers, at least one cross-linker, and a radical initiator;
- b. adding to said mixture at least 15% by weight of polymethyl methacrylate (PMMA), thereby obtaining a mixture of the cross-linked polymer;
- c. adding an inorganic aggregate to said mixture, the inorganic aggregate and/or mineral being present at a concentration of 85% to 93% by weight of said mixture,
- d. pressing said mixture to form a slab and
- e. curing said slab at a temperature of above 80° C., thereby obtaining said composition.
2 more elements
Dependencies are inferred from the claim text.