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US 12,447,649 B2Granted
Method and gasket for producing a polymethyl methacrylate plate
AssigneeTrinseo Europe GmbH
InventorsNikolaj Garnitsch, Simon van der Heijden
Life of this patent
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Abstract
A method for producing a polymethyl methacrylate plate includes the steps of providing a mould that includes at least one gasket which is enclosed between two substantially parallel mould parts, introducing liquid including methyl methacrylate prepolymer and/or methyl methacrylate monomer in the mould and enabling polymerization of the liquid methyl methacrylate. A gasket is used in a mould for producing a polymethyl methacrylate plate.
Claims21
A method for producing a polymethyl methacrylate plate, comprising the steps of:
- a) providing a mould comprising at least two mould parts, each mould part having at least one substantially flat mould surface facing a substantially flat mould surface of an opposing mould part, and wherein said mould comprises at least one gasket, which gasket is clamped in between said substantially flat mould surfaces of opposing mould parts, such that a mould cavity is defined by said mould parts and said gasket,
- b) at least partially filling the mould cavity by introducing liquid comprising methyl methacrylate prepolymer and/or methyl methacrylate monomer into the mould cavity,
- c) enabling polymerization of the methyl methacrylate prepolymer and/or methyl methacrylate monomer introduced in the mould cavity, such that a polymethyl methacrylate plate, enclosed by said gasket, is formed within said mould cavity, and
- d) removal of the assembly of the gasket and said polymethyl methacrylate plate enclosed by said gasket from the mould parts,
- wherein the gasket comprises at least one hydrocarbon-based copolymer, and
- wherein the gasket comprises a copolymer of ethylene and methacrylic acid.
3 more elements
Dependencies are inferred from the claim text.