Back to results
US 10,240,071 B2Granted
Aqueous adhesive dispersion containing polyurethanes and ethoxylated fatty alcohols
AssigneeBASF SE
InventorsKarl-Heinz Schumacher, Gemma Sanders, Kimberly Simancas, Oliver Hartz
Life of this patent
Estimating the term…
Abstract
Described are aqueous adhesive dispersions comprising dispersed polyurethanes and also ethoxylated fatty alcohols as emulsifiers. The polyurethanes are constructed from certain organic diisocyanates, dihydroxy compounds selected from certain polyester diols and polyether diols, and compounds having groups reactive toward isocyanate groups and having at least one ionic group. The adhesive dispersions can be used as laminating adhesives, for example for composite film lamination or for the lamination of rigid moldings with flexible decorative foils.
Claims19
An aqueous adhesive dispersion, comprising:
- a) 30 to 55 weight % of at least one dispersed polyurethane, based on the aqueous adhesive dispersion, constructed from
- a1) at least one organic diisocyanate of the formula:
- X(NCO)2, where X is a noncyclic aliphatic hydrocarbon radical having 4 to 15 carbon atoms, a cycloaliphatic hydrocarbon radical having 6 to 15 carbon atoms, an aromatic hydrocarbon radical having 6 to 15 carbon atoms, or an araliphatic hydrocarbon radical having 7 to 15 carbon atoms,
- a2) at least one dihydroxy compound selected from the group consisting of a polyester diol and a polyether diol, the polyester diol being formed from at least one aliphatic dicarboxylic acid and at least one alkanediol, and the polyether diol being selected from the group consisting of a polypropylene oxide and a polytetrahydrofuran,
- a3) at least one compound having at least one group reactive toward isocyanate groups, and additionally carrying at least one ionic group or one group which can be converted into an ionic group, and
- a4) optionally at least one further compound different from a1) to a3);
- and
- b) 0.5 to 2 weight % of at least one nonionic emulsifier, based on a total amount of solids, comprising an ethoxylated fatty alcohol.
5 more elements
An aqueous adhesive dispersion, comprising:
- a) at least one dispersed polyurethane constructed from
- a1) at least one organic diisocyanate of the formula:
- X(NCO)2, where X is a noncyclic aliphatic hydrocarbon radical having 4 to 15 carbon atoms, a cycloaliphatic hydrocarbon radical having 6 to 15 carbon atoms, an aromatic hydrocarbon radical having 6 to 15 carbon atoms, or an araliphatic hydrocarbon radical having 7 to 15 carbon atoms,
- a2) at least one dihydroxy compound selected from the group consisting of an adipic acid-butanediol polyester and an adipic acid-hexanediol polyester,
- a3) at least one compound having at least one group reactive toward isocyanate groups, and additionally carrying at least one ionic group or one group which can be converted into an ionic group, and
- a4) optionally at least one further compound different from a1) to a3);
- and
- b) at least one nonionic emulsifier comprising an ethoxylated fatty alcohol.
5 more elements
An aqueous adhesive dispersion, comprising:
- a) at least one dispersed polyurethane constructed from
- a1) at least one organic diisocyanate of the formula:
- X(NCO)2, where X is a noncyclic aliphatic hydrocarbon radical having 4 to 15 carbon atoms, a cycloaliphatic hydrocarbon radical having 6 to 15 carbon atoms, an aromatic hydrocarbon radical having 6 to 15 carbon atoms, or an araliphatic hydrocarbon radical having 7 to 15 carbon atoms,
- a2) at least one dihydroxy compound selected from the group consisting of a polyester diol and a polyether diol, the polyester diol being formed from at least one aliphatic dicarboxylic acid and at least one alkanediol, and the polyether diol being selected from the group consisting of a polypropylene oxide and a polytetrahydrofuran,
- a3) at least one compound having at least one group reactive toward isocyanate groups, and additionally carrying at least one ionic group or one group which can be converted into an ionic group, and
- a4) optionally at least one further compound different from a1) to a3);
- and
- b) at least one nonionic emulsifier comprising an ethoxylated fatty alcohol, wherein the ethoxylated fatty alcohol is a C16 to C18 fatty alcohol with a degree of ethoxylation of 8 to 50.
5 more elements
Dependencies are inferred from the claim text.