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US 11,952,455 B2Granted
Foam and composition for foam
AssigneeAlcare Co., Ltd.
InventorsTakabumi Kubo, Tomoya Tanaka, Ryota Watanabe
Life of this patent
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Abstract
The present invention provides a foam having a surface which solates or gelates after absorption of water and appropriately absorbs the water. The foam is prepared by a foam reaction of a mixture comprising at least one polyol, a compound having at least one isocyanate group, and a hydrophilic polymer.
Claims16
A foam prepared by foaming and reacting a mixture comprising:
- at least one polyol;
- a compound having at least one isocyanate group;
- and
- a hydrophilic polymer, wherein the hydrophilic polymer contains at least calcium alginate and 10 to 20.5 mass % water, wherein:
- the foam is generated due to the reaction of water contained in the hydrophilic polymer,
- the foam does not contain any surfactant, and
- the mixture comprises:
- 25 to 80 mass % of the at least one polyol;
- 5 to 30 mass % of the compound having at least one isocyanate group;
- and
- 5 to 50 mass % of the hydrophilic polymer.
8 more elements
A composition for a foam comprising:
- at least one polyol;
- a compound having at least one isocyanate group;
- and
- a hydrophilic polymer, wherein the hydrophilic polymer contains at least calcium alginate and 10 to 20.5 mass % water, wherein:
- the foam is generated due to the reaction of water contained in the hydrophilic polymer,
- the composition does not contain any surfactant, and
- a content of the at least one polyol is 25 to 80 mass %;
- a content of the compound having at least one isocyanate group is 5 to 30 mass %;
- and
- a content of hydrophilic polymer is 5 to 50 mass %.
7 more elements
Dependencies are inferred from the claim text.