Aqueous binder composition

摘要

Aqueous binder composition for granular and/or fibrous substrates, where the binder contains i) a copolymer constructed from ethylenically unsaturated monomers; and ii) lignin.

主权项

1. An aqueous binder composition, comprising:
a) at least one polymer P constructed from
≧0.1 and ≦10 wt % of monomer A of at least one monoethylenically unsaturated compound having at least one silicon-containing group, an epoxy, hydroxyalkyl, N-methylol or carbonyl group, and/or of at least one compound which has at least two nonconjugated ethylenically unsaturated groups;≦0 and <5 wt % of monomer B of at least one monoethylenically unsaturated C3 to C6 monocarboxylic and/or C4-C6-dicarboxylic acid and also the salts and anhydrides thereof ; and>85 and ≦99.9 wt % of monomer C of further ethylenically unsaturated compounds, different from the monomers A and B, the nature and amount of these ethylenically unsaturated compounds being selected such that a polymer constructed solely from them in polymerized form would have a glass transition temperature in the range ≧10 and ≦50° C.,in polymerized form, wherein a sum of the amounts of monomer A, B and C is 100 wt %; and b) at least one lignin compound L, the amount of which is determined such that it is ≧10 and ≦60 parts by weight per 100 parts by weight of the polymer P.