Molded shaving aid compositions, components and methods of manufacture

• US 20070110703A1
• Filed: 11/08/2006
• Published: 05/17/2007
• Est. Priority Date: 11/09/2005
• Status: Active Grant

• Current Assignee: The Gillette Company LLC (The Procter & Gamble Company)
• Original Assignee: Gillette Company (The Procter & Gamble Company)
• Inventors: Anderson, John, Xu, Yun, Johnson, Robert, Houlihan, Robert, Westgate, Marilyn, O'Grady, Janet, Corbeil, Coroy, Moloney, Michael, Danti, Gregory, Morrissey, Maureen
• Granted Patent: US 7,811,553 B2
• Time in Patent Office: Days
• US Class Current: 424/73
• CPC Class Codes: A61K 8/0204 Specific forms not provided for by any of groups A61K8/0208 - A61K8/14
• CPC Class Codes: A61K 8/361 Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
• CPC Class Codes: A61K 8/8111 Homopolymers or copolymers of aliphatic olefines, e.g. polyethylene, polyisobutene; Compositions of derivatives of such polymers
• CPC Class Codes: A61K 8/86 Polyethers
• CPC Class Codes: A61K 8/894 modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• CPC Class Codes: A61K 8/895 containing silicon bound to unsaturated aliphatic groups, e.g. vinyl dimethicone
• CPC Class Codes: A61Q 9/00 Preparations for removing hair or for aiding hair removal
• CPC Class Codes: A61Q 9/02 Shaving preparations
• CPC Class Codes: B26B 21/222 with the blades moulded into, or attached to, a changeable unit B26B21/4006 takes precedence
• CPC Class Codes: B26B 21/44 Means integral with, or attached to, the razor for storing shaving-cream, styptic, or the like
• CPC Class Codes: B26B 21/443 Lubricating strips attached to the razor head

Abstract

Razors and components thereof are provided, as well as methods of making such.

Claims

1. A shaving cartridge comprising:

a housing having a front edge and a rear edge;

one or more shaving blades between the front edge and the rear edge;

a shaving aid holder; and

at least one shaving aid portion mounted on the shaving aid holder, the shaving aid portion comprising from about 0.1% to about 10 wt % polyoxyethylene and a soap base.

2. The shaving cartridge of claim 1, wherein the polyoxyethylene has a molecular weight of from about 100,000 to about 5,000,000.

3. The shaving cartridge of claim 1, the shaving aid portion further comprising a silicone cross-polymer.

4. The shaving cartridge of claim 3, further comprising a silicone polymer.

5. The shaving cartridge of claim 4 wherein the silicone cross-polymer is selected from the group consisting of dimethicone PEG-7 panthenyl phosphate, dimethicone PEG-7 phosphate, dimethicone PEG-7 undecylenate, dimethicone/methicone copolymer, perfluoronoylethyl dimethicone methicone copolymer, dimethicone/vinyl dimethicone crosspolymer in dimethicone, vinyl dimethicone/lauryl dimethicone crosspolymer in mineral oil, vinyl dimethicone/lauryl dimethicone crosspolymer in squalane, vinyl dimethicone/methicone silsesquioxane crosspolymer, squalene and lauryl dimethicone/polyglycerin-3 crosspolymer, triethylhexanoin and lauryl dimethicone/polyglycerin-3 crosspolymer, and dimethicone/polyglycerin-3 crosspolymer and dimethicone, PEG/PPG-20/6 dimethicone, behenoxydimethicone, C24-28 alkyl methicone, dimethicone/vinyl dimethucine crosspolymer, and C12-C14 Pareth-12.

6. The shaving cartridge of claim 1, the shaving aid portion further comprising a polyethylene, polybutene, and mineral oil composition.

7. The shaving cartridge of claim 1, the shaving aid portion further comprising from about 0.25 wt % to about 5 wt % silicone cross-polymer, from about 10 wt % to about 60 wt % sodium stearate, from about 0.5 wt % to about 8 wt % semi-solid esters, from about 0.25 wt % to about 10 wt % polyethylene glycol derivatives, and from about 0.3 wt % to about 10 wt % of a polyethylene, polybutene and mineral oil composition.

8. The shaving cartridge of claim 1, wherein the soap base is a poured soap base.

9. The shaving cartridge of claim 1, wherein the soap base is an extruded soap base.

10. A razor component comprising a molded shaving aid portion and a shaving aid holder to which the molded shaving aid portion is mounted, wherein the molded shaving aid portion comprises from about 0.1% to about 10 wt % polyoxyethylene and a soap base and the shaving aid holder is configured to attach to a razor.

11. The razor component of claim 10, wherein the shaving aid holder is configured to releasably attach to a razor blade unit.

12. The razor component of claim 11, wherein the soap base is a poured soap base.

13. The razor component of claim 11, wherein the soap base is an extruded soap base.

14. A method of making a molded shaving aid portion, the method comprising:

heating a soap base to a temperature sufficient to melt the soap base;

adding one or more process-sensitive ingredients to the soap base melt to form a shaving aid composition; and

cooling the shaving aid composition to form a shaving aid portion,

wherein a period of time elapsing between adding the process-sensitive ingredient and cooling the shaving aid composition is sufficiently short to prevent substantial degradation of the wear enhancing ingredient.

15. The method of claim 14, wherein the process-sensitive ingredient is a wear enhancing ingredient.

16. The method of claim 15, wherein the soap base is melted at a temperature of from about 95°

C. to about 105°

C.

17. The method of claim 15, further comprising incorporating the molded shaving aid portion into a razor blade unit.

18. The method of claim 17, further comprising attaching the molded shaving aid to a wing and attaching the wing to the razor blade unit.

19. A composition comprising from about 0.25 to about 10 wt % polyoxyethylene and a soap base.