Methylated hydroxypropylcellulose and temperature responsive...

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 1/28 (2006.01) C08B 11/193 (2006.01) C08B 11/20 (2006.01) C09J 101/28 (2006.01) D04H 1/42 (2006.01) D04H 1/64 (2006.01) D21H 17/26 (2006.01)

Patent

CA 2274674

The present invention is directed to a method of producing methylated hydroxypropylcellulose (m-HPC). By controlling the degree of methylation, one can manipulate the lower critical solution temperature (LCST) of the m-HPC polymer to below room temperature and thereby stabilize the polymer in water above about 30 ~C. The present invention is also directed to binder compositions, fibrous substrates, water-dispersible products and thermoformable products containing the m-HPC polymer.

La présente invention concerne un procédé de production d'hydroxypropylcellulose méthylée (m-HPC). En régulant le degré de méthylation, on peut manipuler la température de solution critique inférieure (LCST) du polymère de m-HPC et l'amener au-dessous de la température ambiante, ce qui permet de stabiliser le polymère dans l'eau au-dessus d'environ 30 ·C. La présente invention concerne également des compositions liantes, des substrats fibreux, des produits dispersables dans l'eau et des produits thermoformables contenant le polymère de m-HPC.

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