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US 2016/0108236 A1Published application
Polyurethane composites comprising nanocrystalline cellulose and method for improving properties of polyurethanes thereof
AssigneeCelluforce Inc.
InventorsRichard BERRY, Alain GRANGER
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Abstract
The disclosure relates to polyurethane composites comprising nanocrystalline cellulose and method for improving properties of polyurethanes thereof.
Claims28
A process for preparing a polyurethane composite comprising:
- (i) providing a dispersion of NCC in
- (a) one or more polyols,
- (b) one or more isocyanates, or
- (c) in one or more polyols and one or more isocyanate, separately of mixed together;
- (ii) mixing the dispersion of (i)(a) with an isocyanate or (i)(b) with a polyol and a catalyst to allow polymerization;
- or mixing the dispersion of (i)(c) and a catalyst to allow polymerization;
- and
- (iii) isolating said polyurethane composite.
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A method for modulating at least one property of a polyurethane, said method comprising dispersing NCC into one or both parts of a two part polyol/isocyanate precursors prior to allowing polymerization of said precursors.
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A polyurethane composite comprising NCC.
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Dependencies are inferred from the claim text.