Tetrahydrofuran-containing silicone polyethers

US6117963A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Tammo Boinowitz · Essen, DE
• Georg Burkhart · Essen, DE
• Rolf-Dieter Langenhagen · Hattingen, DE
• Andreas Weier · Essen, DE

Key dates

• Filing date: Jun 5, 1997
• Grant date: Sep 12, 2000
• Expiry date: Jun 5, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/46
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Block copolymers of the general average formula ##STR1## where, A=radical R.sup.1, radical D, or radical E, PA0 D=radical of the formula EQU --R.sup.2.sub.f --O--(C.sub.2 H.sub.4-g R.sup.5.sub.g O--).sub.n (CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2-i R.sup.6.sub.i --O--).sub.m R.sup.3, and E is PA0 a) a radical of the general formula --R.sup.2.sub.f --O--(C.sub.2 H.sub.4-g R.sup.5.sub.g O--).sub.n R.sup.3 and/or PA0 b) an epoxy-functionalized alkyl substituent which may contain heteroatoms and/or PA0 c) a monohydroxylalkyl, dihydroxylalkyl, or trihydroxyalkyl substituent which may also be aromatic or branched and partially or fully etherfied or esterfied and/or PA0 d) a halogen- or pseudohalogen-substituted alkyl, aryl, or aralkyl radical which may also be branched, provided that there are two or more different polyether copolymer units in the block copolymer, the remaining variables being defined herein, are disclosed, as well as their use as surface-active substances, in particular as additives in the production of polyurethane foams.