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Preparation of aqueous (meth)acrylate copolymer dispersions in two stages and their use as impregnating materials, coating materials and binders for sheet-like fibrous structures
Preparation of aqueous (meth)acrylate copolymer dispersions in two stages and their use as impregnating materials, coating materials and binders for sheet-like fibrous structures
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机译:分两步制备(甲基)丙烯酸酯共聚物水分散体,并将其用作片状纤维结构的浸渍材料,涂料和粘合剂
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摘要
Aqueous (meth)acrylate copolymer dispersions can be prepared by polymerization of the monomers in two stages having different monomer compositions and with the concomitant use of crosslinking monomers in aqueous emulsion at the usual temperatures in the presence of the conventional emulsifiers and polymerization initiators, from 40 to 99.5% by weight of the total monomers being polymerized in the first stage and from 60 to 0.5% by weight of the total monomers being polymerized in the second stage, by a process in which from 0.5 to 10% by weight, based on the total monomers, of (meth)-acrylamidoglycollic acid and /or its methyl ester and/or its methyl ether are polymerized in the second stage and from 0 to 1.8% by weight, based on the total monomers, of the amidoglycollic acid compounds are polymerized in the first stage, and the resulting copolymer dispersions are used as binders for sheet-like textile fibrous structures.
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