Polyurethane sealant

• Main Authors: CHEN CHEUN GWO, EMGE ANDREAS, FENG YUEXIA, LIANG JIA
• Format: Patent
• Language: Chinese; English
• Published: 06.07.2016
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention relates to a process for producing a polyurethane sealant, which comprises mixing (a) polyisocyanate, (b) polyetherpolyols, (c) aliphatic, exclusively amine initiated alkoxylation products having an OH-number of 400 to 1000 mg KOH/g and a functionality of 4, (d) blowing agents and optionally (e) chain extenders and/or crosslinking agents, (f) catalysts and (g) auxiliaries and/or additives to give a reaction mixture and reacting the reaction mixture to give the polyurethane sealant. The present invention further relates to a cast in place polyurethane sealant, obtained according to a process according to the present invention. 本发明涉及一种用于制备聚氨酯密封剂的方法，所述方法包括：混合(a)多异氰酸酯、(b)聚醚多元醇、(c)羟值为400?1000mg KOH/g且官能度为4的仅由胺引发的脂肪族烷氧基化产物、(d)发泡剂和任选的(e)扩链剂和/或交联剂、(f)催化剂及(g)助剂和/或添加剂，以得到反应混合物，并使反应混合物反应，以获得所述聚氨酯密封剂。本发明还涉及现场灌注聚氨酯密封剂，其根据本发明的方法获得。