Claims
- 1. A shaving aid for use with a wet razor:
- (a) said shaving aid comprising about 15%-40% of a water-insoluble matrix wherein:
- (i) about 30%-70% of said water-insoluble matrix comprises a polystyrene compound;
- (ii) about 25%-70% of said water-insoluble matrix comprises a polypropylene compound; and
- (b) said shaving aid further comprises at least 50% of at least one water-soluble active ingredient.
- 2. A shaving aid according to claim 1 comprising about 18%-35% of said water-insoluble polymer wherein said water-insoluble polymer comprises about 40%-65% polystyrene compound and about 35%-60% polypropylene compound.
- 3. A shaving aid according to claim 1 comprising about 20%-25% of said water-insoluble matrix and wherein said water-insoluble matrix comprises:
- (a) about 50%-60% polystyrene compound; and
- (b) about 40%-50% polypropylene compound.
- 4. A shaving aid according to claim 1 wherein said active ingredient comprises polyethylene oxide.
- 5. A shaving aid according to claim 4 wherein said active ingredient comprises polyethylene oxide.
- 6. A shaving aid according to claim 1 wherein said active ingredient comprises at least 90% polyethylene oxide.
- 7. A shaving aid according to claim 6 wherein said active ingredient comprises at least 90% polyethylene oxide.
- 8. A shaving aid according to claim 1 comprising:
- about 10% of a polypropylene compound;
- about 10% of a polystyrene compound;
- at least 75% of a blend of high molecular weight polyethylene oxide having an average molecular weight of about 5 million and a low molecular weight polyethylene oxide having an average molecular weight of about 300,000.
- 9. A shaving aid according to claim 8 comprising approximately equal amounts of said high molecular weight polyethylene oxide and said low molecular weight polyethylene oxide.
- 10. A shaving aid according to claim 8 comprising
- about 10% of a polypropylene compound;
- about 10% of a polystyrene compound;
- about 20% high molecular weight polyethylene oxide having an average molecular weight of about 5 million; and
- about 60% of a low molecular weight polyethylene oxide having an average molecular weight of about 300,000.
- 11. A shaving aid according to claim 8 wherein said polystyrene compound comprises medium impact polystyrene and about 10% titanium dioxide pigment, and
- wherein said polypropylene compound comprises about 10% titanium dioxide pigment.
- 12. A shaving aid according to claim 1 comprising about 0.05-1% aloe vera.
- 13. A shaving aid according to claim 1 comprising at least one coloring agent.
- 14. A shaving aid for use with a wet razor:
- (a) said shaving aid comprising about 15%-40% of a water-insoluble matrix:
- (i) about 30%-70% of said water-insoluble matrix comprises an ABS compound; and
- (ii) about 25%-70% of said water-insoluble matrix comprises a polypropylene compound; and
- (b) said shaving aid further comprises at least 50% of at least one water-soluble active ingredient.
- 15. A shaving aid according to claim 14 comprising about 18%-35% of said water-insoluble matrix and wherein said water-insoluble matrix comprises:
- (i) about 40%-65% ABS compound; and
- (ii) about 35%-60% polypropylene compound.
- 16. A shaving aid according to claim 14 comprising about 20%-25% of said water-insoluble matrix and wherein said water-insoluble matrix comprises:
- (i) about 50%-60% ABS compound; and
- (ii) about 40%-50% polypropylene compound.
- 17. A flexible razor head comprising:
- a flexible blade support comprising polypropylene;
- a shaving aid attached to said flexible razor head:
- (a) said shaving aid comprising about 15%-40% of a water-insoluble matrix wherein:
- (i) about 30%-70% of said water-insoluble matrix comprises a polystyrene compound; and
- (ii) about 25%-70% of said water-insoluble matrix comprises a polypropylene compound; and
- (b) said shaving aid also comprising at least 50% of at least one active ingredient.
- 18. A flexible razor head according to claim 17 wherein said shaving aid comprises about 18%-35% of said water-insoluble matrix and wherein said water-insoluble matrix comprises:
- (i) about 40%-65% polystyrene compound; and
- (ii) about 35%-60% polypropylene compound.
- 19. A flexible razor head according to claim 18 wherein said shaving aid comprises about 18%-35% of said water-insoluble matrix and wherein said water-insoluble matrix comprises:
- (i) about 40%-65% polystyrene compound; and
- (ii) about 35%-60% polypropylene compound.
- 20. A shaving aid according to claim 17 wherein said active ingredient comprises polyethylene oxide.
- 21. A shaving aid according to claim 17 wherein said active ingredient comprises at least 90% polyethylene oxide.
- 22. A flexible razor head according to claim 17 wherein said blade support comprises at least 75% polypropylene.
- 23. A flexible razor head according to claim 17 wherein said blade support comprises at least 90% polypropylene.
- 24. A process for insert molding a flexible razor head comprising the steps of:
- securely positioning at least one blade in a mold cavity;
- molding a flexible razor head by injecting at least one first polymer into said mold cavity;
- modifying said mold cavity to receive a shaving aid on said flexible razor head; and
- subsequently injecting a polymeric blend into said modified mold cavity wherein said polymeric blend comprises:
- a polypropylene compound,
- at least one polymer from the group consisting of an ABS compound and a polystyrene compound, and
- at least one water-soluble active ingredient.
- 25. A process according to claim 24 wherein said first polymer comprises polypropylene.
- 26. A process according to claim 25 wherein said water-soluble active ingredient comprises polyethylene oxide.
- 27. A razor head comprising at least one blade supported by a support structure;
- wherein said support structure comprises a first water-insoluble polymeric material;
- said razor head comprising a shaving aid;
- said shaving aid comprising a water-insoluble matrix comprising said first water-insoluble polymeric material and a second water-insoluble material which is different from said first water-insoluble polymeric material; and
- said shaving aid also comprising at least one water-soluble active ingredient.
- 28. A razor head according to claim 27 wherein said first water-insoluble polymeric material comprises polypropylene.
- 29. A razor head according to claim 28 wherein said second water-insoluble polymeric material comprises polystyrene.
BACKGROUND
This is a continuation of 07/832,207, filed Feb. 6, 1992 abandoned Dec. 13, 1993.
US Referenced Citations (11)
Foreign Referenced Citations (2)
Number |
Date |
Country |
828084 |
Feb 1960 |
GBX |
2024082 |
Jan 1980 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
832207 |
Feb 1992 |
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