| 摘要 |
Polyurethane adhesive comprises: (i) a first component comprising (a) at least one triol with a molecular weight of 1000-10000 g/mole, (b) at least one diol with two primary hydroxy groups and a molecular weight of 60-150 g/mole, (c) at least one alkoxylated aromatic diol having a molecular weight of 300-1000 g/mole, and (d) at least one aliphatic polyamine having a molecular weight of 60-500 g/mole; and (ii) a second component comprising (e) at least one polyisocyanate and (f) at least one isocyanate group-containing polyurethane polymer. Polyurethane adhesive comprises: (i) a first component comprising (a) at least one triol with a molecular weight of 1000-10000 g/mole, (b) at least one diol with two primary hydroxy groups and a molecular weight of 60-150 g/mole, (c) at least one alkoxylated aromatic diol having a molecular weight of 300-1000 g/mole, and (d) at least one aliphatic polyamine having a molecular weight of 60-500 g/mole; and (ii) a second component comprising (e) at least one polyisocyanate and (f) at least one isocyanate group-containing polyurethane polymer. The triol, diol and alkoxylated aromatic diol is present in an amount such that (g) the weight ratio of triol to the sum of diol and alkoxylated aromatic diol is = 10, and the weight ratio of triol to diol is = 15. Independent claims are also included for: (1) bonding a first substrate to a second substrate, comprising mixing the two components of a polyurethane adhesive, applying the mixed polyurethane adhesive to at least one of the substrate surfaces to be bonded, joining the substrates to be bonded within the open time, and curing of the polyurethane adhesive; and (2) an article obtained from a process for adhesive bonding. |
