Two-component polyurethane adhesive for adhesively bonding molded fiber parts

A two-component polyurethane adhesive, comprising

• i) a polyol component containing at least one catalyst, wherein the catalyst in the two component polyurethane adhesive comprises a metal catalyst and:
• a. 2 to 30% by weight at least one oleochemical polyol having a number-average molecular weight (Mn) of at least 500 g/mol;
• b. 5 to 35% by weight at least one polyol that is different from (a) and has 3 to 14 hydroxy groups;
• c. 5 to 35% by weight at least one polyol that is different from (a) and (b) selected from ethoxylated and/or propoxylated polyphenols;
• d. 10 to 50% by weight glass fibers or a mixture of different glass fibers;
• e. 0 to 65% by weight at least one additive or auxiliary that is different from (a) to (d);
• wherein the mass fractions of the components (a) to (e) are relative to the total weight of the polyol component;
• and
• ii) an isocyanate component containing aromatic and/or aliphatic polyisocyanates in an NCO/OH ratio of 0.9:1 to 1.5:1;
• and
• wherein the metal catalyst is a tin compound,
• wherein the catalyst further comprises at least one complexing agent selected from the group consisting of tropolone, maltol, ethylmaltol, 3-hydroxyflavone, salicylhydroxamic acid, N,N′-bis(salicylidene) ethylenediamine, kojic acid, 8-hydroxyquinoline, acetylacetone, acetoacetate, gallic acid ethyl ester, dehydroacetic acid, 2,5-dihydroxy-1,4-benzoquinone, dithizone, and tannin;
• and
• wherein the crosslinked two-component polyurethane adhesive has a glass transition temperature (Tg) of at least 65° C.