Aqueous binders granulated and/or fibrous substrates
AssigneeBASF SE
InventorsMarkus Braun, Christian Krueger
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Abstract
Aqueous binders for granular and/or fibrous substrates comprising as active constituents: a) at least one polymer which is obtainable by free-radical addition polymerization and comprises in copolymerized form ≧5.5% and ≧20% by weight of an α,β-ethylenically unsaturated monocarboxylic or dicarboxylic acid [polymer A], b) at least one polymer which is obtainable by free-radical addition polymerization and comprises in copolymerized form ≧40% by weight of an α,β-ethylenically unsaturated monocarboxylic or dicarboxylic acid [polymer B], and c) at least one polyol compound having at least two hydroxyl groups [polyol C].
Claims19
An aqueous binder, comprising:
- (a) a polymer which is obtained by free-radical addition polymerization and comprises in a copolymerized form ≧5.5% and ≦20% by weight of at least one of an α,β-ethylenically unsaturated monocarboxylic and an α,β-ethylenically unsaturated dicarboxylic acid,
- (b) a polymer which is obtained by free-radical addition polymerization and comprises 100% by weight of at least one of an α,β-ethylenically unsaturated monocarboxylic and an α,β-ethylenically unsaturated dicarboxylic acid, and
- (c) a polyol compound having at least two hydroxyl groups,
- wherein
- the aqueous binder does not comprise a phosphorus-containing accelerator, and
- the polymer (a) has a glass transition temperature in the range between ≧0 and ≦130° C.
Dependencies are inferred from the claim text.