Polyurethane foam
AssigneeFritz Nauer AG
InventorsHenri Mispreuve, Reinold Naescher, Kurt Schoenenberger, Johan Frei, Erik Vogel, Zacharias Grote
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Abstract
Polymer-modified polyol, for use as a starting material for polyurethane foam, is made by reacting an olamine, such as triethanolamine, with an isocyanate in the presence of a metal organic catalyst. The catalyst is a metal salt of an organic acid and the viscosity of the polymer-modified polyol is at least 2250 mPa·s. In one embodiment the catalyst is of the formulat M(O.CO.R.CH3)2 where M is a metal and R is a carbon chain of 6 to 20 carbons. A metal salt of a monohydroxy fatty acid, particularly ricinoleic acid may be used.
Claims25
A method of making a polymer-modified polyol, wherein an olamine is reacted with an organic polyisocyanate in the presence of a polyol and at least one catalyst which is a metal salt of an organic acid, the olamine reacting at least predominantly polyfunctionally with the isocyanate, wherein the, or at least one, catalyst is present in a proportion of 0.006-0.01 mmol/100 grams polyol, and wherein the viscosity of the polymer-modified polyol is at least 2250 mPa·s. when measured at 25° C. using a Brookfield or Brookfield compatible viscometer.
A method of making a polymer-modified polyol, wherein an olamine is reacted with an organic polyisocyanate in the presence of a polyol and at least one catalyst which is present in a proportion of 0.006-0.012 mmol/100 grams polyol and is a metal salt of an organic acid, the olamine reacting at least predominantly polyfunctionally with the isocyanate, wherein the, or at least one, said catalyst is of the formula:
- M(O.CO.R.CH3)2
- where M is a metal
- R is a carbon chain of 6 to 20 carbons.
A method of making a polymer-modified polyol, wherein an olamine is reacted with an organic polyisocyanate in the presence of a polyol and at least one catalyst which is present in a proportion of 0.006-0.012 mmol/100 grams polyol and is a metal salt of an organic acid, the olamine reacting at least predominantly polyfunctionally with the isocyanate, wherein the, or at least one, said catalyst is a metal salt of a monohydroxy fatty acid.
Dependencies are inferred from the claim text.