Methylated hydroxypropylcellulose and temperature responsive products made therefrom
AssigneeKimberly-Clark Worldwide, Inc.
InventorsPavneet Singh Mumick, Yihua Chang
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Abstract
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.degree. C. The present invention is also directed to binder compositions, fibrous substrates, water-dispersible products and thermoformable products containing the m-HPC polymer.
Claims38
A binder composition for binding fibrous material into an integral web, said binder composition comprising methylated hydroxypropylcellulose.
A fibrous substrate comprising:
- at least one fibrous material;
- and
- a binder composition for binding said at least one fibrous material into an integral web, said binder composition comprising methylated hydroxypropylcellulose (m-HPC).
A water-dispersible product containing at least one fibrous substrate, wherein the fibrous substrate comprising:
- at least one fibrous material;
- and
- a binder composition for binding said at least one fibrous material into an integral web, said binder composition comprising methylated hydroxypropylcellulose (m-HPC).
A water-dispersible thermoformable article comprising methylated hydroxypropylcellulose (m-HPC).
A method of adjusting the cloud point of hydroxypropylcellulose for use as a water-dispersible binder material, said method comprising:
- substituting methoxy groups for secondary hydroxy groups on the hydroxypropyl groups of the hydroxypropylcellulose polymer chain.
Dependencies are inferred from the claim text.