Isocyanate-group-containing polymer having a low content of monomeric diisocyanates
A diisocyanate, isocyanate-based technology, applied in the direction of polyurea/polyurethane adhesive, bonding method, adhesive type, etc., to achieve the effect of good creep resistance, good leveling, high tear propagation resistance
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[0176] Examples are described below, which explain the present invention in more detail. The invention is of course not limited to the described embodiments.
[0177] "Normal climate" ("NK") means a temperature of 23±1° C. and a relative air humidity of 50±5%.
[0178] Chemical reagents used were obtained from Sigma-Aldrich if not stated otherwise.
[0179] Polyols used:
[0180] 5031BT: ethylene oxide-terminated polyoxypropylene triol starting from glycerol with an OH value of 28 mg KOH / g and an OH functionality of about 2.3 (from Covestro);
[0181] Average molecular weight M determined by GPC n is about 6000g / mol
[0182] 6300: polyoxypropylene triol starting from glycerol, OH number 28 mg KOH / g, OH functionality >2.9 (from Covestro);
[0183] Average molecular weight M determined by GPC n is about 6700g / mol
[0184] CP 4755: ethylene oxide-terminated polyoxypropylene triol starting from glycerol with an OH value of 35 mgKOH / g and an OH functionality of about ...
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