| 摘要 |
Two-component polyurethane adhesive comprising an OH-polyurethane prepolymer made from 2- to 5-functional oil-derived polyols and a polyisocyanate (A), plus a crosslinker based on a polyisocyanate (B), in which (A) may have a linear or angled form and (B) has the opposite form, 20-85 mol% of (A) plus (B) must be linear, linear isocyanates are only in one component and the crosslinked adhesive shows a change in elastic modulus of less than 4000 MPa between -60 and +30[deg] C. Two-component polyurethane adhesive (I) comprising an OH-polyurethane prepolymer, optionally with other polyols and additives, obtained by reacting 2- to 5-functional oil-derived polyol(s) (II) with a polyisocyanate (A) at an NCO:OH ratio of (1:2)-(1:5), and a crosslinker component based on a polyisocyanate (B), in which (A) has a linear or angled configuration and (B) is an isocyanate with the opposite form, 20-85 mol% of (A) plus (B) must be linear, the linear isocyanates are only in one component and the crosslinked adhesive shows a change in elastic modulus of less than 4000 MPa between -60 and +30?C. |
