T,3-dioxan-2-one group-containing oligourethanes
AssigneeBayer Aktiengesellschaft
InventorsWieland Hovestadt, Hans-Josef Buysch, Lutz Schmalstieg, Harald Blum, Norbert Schon
Life of this patent
Estimating the term…
Abstract
Described herein is a process for the preparation of 1,3-dioxan-2-one group-containing oligourethanes by reacting a) hydroxy-functional 1,3-dioxan-2-ones with b) compounds having an average of at least two isocyanate groups per molecule; the oligourethanes obtainable by this process; and their use, optionally in combination with compounds containing active hydrogen atoms, for the preparation of plastics or as a binder or binder component in coating compositions.
Claims13
A process for the preparation of a 1,3-dioxan-2-one group-containing oligourethane which comprises reacting
- a) one or more hydroxy-functional 1,3-dioxan-2-ones corresponding to the formula ##STR3## wherein R.sup.1 represents a hydroxyalkyl radical and
- R.sup.2 represents an alkyl radical with
- b) a polyisocyanate component having an average of at least two isocyanate groups per molecule and containing one or more polyisocyanates
- to form urethane groups.
A 1,3-dioxan-2-one group-containing oligourethane which is the urethane group-containing reaction product of
- a) one or more hydroxy-functional 1,3-dioxan-2-ones corresponding to the formula ##STR4## wherein R.sup.1 represents a hydroxyalkyl radical and
- R.sup.2 represents an alkyl radical with
- b) a polyisocyanate component having an average of at least two isocyanate groups per molecule and containing one or more polyisocyanates.
Dependencies are inferred from the claim text.