Process for the preparation of polyurethane resins using low molecular weight polyhydroxyl compounds prepared by the condensation of formaldehyde
This invention relates to a process for the preparation of polyurethane resins by the reaction of polyisocyanates with a mixture of various low molecular weight hydroxyaldehydes, hydroxyketones and polyhydric alcohols obtained by an improved process for the condensation of formaldehyde with itself.
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Main Author | |
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Format | Patent |
Language | English |
Published |
12.04.1983
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Subjects | |
Online Access | Get full text |
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Summary: | This invention relates to a process for the preparation of polyurethane resins by the reaction of polyisocyanates with a mixture of various low molecular weight hydroxyaldehydes, hydroxyketones and polyhydric alcohols obtained by an improved process for the condensation of formaldehyde with itself. |
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Bibliography: | Application Number: US19810282219 |