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US 2006/0052505 A1Published application
Water soluble polyamide compositions, solutions thereof, films and sheets therefrom and process of making films and sheets therefrom
OwnerRolando Pagilaganinventor
Life of this patent
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Abstract
Novel water soluble compositions of at least one polyamide and at least one nanoclay are provided which are suitable for casting into films, sheets, packaging materials and the like. Process for making such articles and a variety of end uses are also disclosed.
Claims18
A water-soluble polyamide composition comprising
- (a) about 70 to about 99.5 weight percent of at least one polyamide having a solubility in water at 23° C. of at least 1 weight percent and derived from monomers comprising adipic acid and at least one ether diamine of the general formula (I) and/or (II) having a molecular weight of between 148 and 396
- H2N—R1—O—R2—O—R3—NH2 (I)
- H2N—R4— (O—CH2—CH2)x—O—R5—NH2 (II)
- wherein R1, R2, R3, R4, and R5 are independently either (CH2—CH2) or (CH2—CH2—CH2) and x is an integer between 2 and 6, inclusive;
- and
- (b) about 0.5 to about 30 weight percent of at least one nanoclay.
3 more elements
A solution for use in casting into films, comprising
- (a) about 40 to about 99 weight percent of a solvent comprising about 80 to 100 weight percent water and 0 to about 20 weight percent of one or more alcohols;
- (b) about 1 to about 60 weight percent of at least one polyamide having a solubility in water at 23° C. of at least 1 weight percent and derived from monomers comprising adipic acid and at least one ether diamine of the general formula (I) and/or (II) having a molecular weight of between 148 and 396
- H2N—R1—O—R2—O—R3—NH2 (I)
- H2N—R4—(O—CH2—CH2)x—O—R5—NH2 (II)
- wherein R1, R2, R3, R4, and R5 are independently either (CH2—CH2) or (CH2—CH2—CH2) and x is an integer between 2 and 6, inclusive;
- and
- (c) about 0.5 to about 30 weight percent, based on the weight of the water-soluble polyamide, of at least one nanoclay;
- wherein the polyamide is dissolved in the solvent and the nanoclay is dispersed in the solvent.
5 more elements
Dependencies are inferred from the claim text.