| 摘要 |
<p>The alkoxysilane group containing polyurethane has general formula (I). The alkoxysilane group containing polyurethane hving general formula (I), is new. PIC : a diisocyanate residue reduced by isocyanates; PES : polyester polyol with 2-3 OH-groups; a : 0 or 1; b : 0-5, preferably 0; c : 1 or 2; X : same or different alkoxy or alkyl residue, where an alkoxy residue is present at Si atom; Q : a difunctional linear or branched aliphatic residue; R : H or organic residue, which is bridged with R 1>; and R 1>H or organic residue, which is bridged with R. Provided that: (A) R=H if a=0 An independent claim is also included for a method for producing polyurethane modified with alkoxysilane group, which involves converting a polyester polyol with diisocyanate to a isocyanate-functional polyurethane prepolymer, which is disguised with an aminosilane. The aminosilane has general formula (II). X,Q : same as variable group of X and Q in general formula (I); and Z : 1-12C alkoxy residue. [Image] [Image] .</p> |
