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US 9,803,038 B2Granted
Method for solution-polymerising (meth)acrylic acid
AssigneeCoatex
InventorJean-Marc Suau
Life of this patent
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Abstract
The present invention relates to a novel method for preparing a (meth)acrylic acid polymer in an aqueous solution, said polymer having a molecular mass lower than 8000 g/mol, for example using copper carbonate and iron sulphate (or the derivatives thereof).
Claims17
A process for preparing a (meth)acrylic acid polymer in aqueous solution, the process comprising:
- continuously and simultaneously introducing:
- at least one (meth)acrylic acid monomer to be polymerized, and
- a polymerization initiator into a reactor heated to a temperature temperature of at least 60° C. and comprising an iron salt or a hydrated derivative thereof and at least one of copper acrylate, copper methacrylate or copper maleate,
- to obtain a (meth)acrylie acid polymer having a molecular mass of less than 8000 mol.
1 more element
Dependencies are inferred from the claim text.