LUBRICATING MEMBERS FOR RAZOR CARTRIDGES

• US 20160177218A1
• Filed: 12/08/2015
• Published: 06/23/2016
• Est. Priority Date: 12/18/2014
• Status: Abandoned Application

• Current Assignee: The Gillette Company LLC (The Procter & Gamble Company)
• Original Assignee: Gillette Company (The Procter & Gamble Company)
• Inventors: Stephens, Alison Fiona, Lu, Bailu, Moloney, Michael John, Haines, Christopher
• Application Number:
  US14/961,954
• Publication Number:
  US 20160177218A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61K 2800/624 by macromolecular compounds
• CPC Class Codes: A61K 8/022 Powders; Compacted Powders
• CPC Class Codes: A61K 8/0241 Containing particulates characterized by their shape and/or structure see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes
• CPC Class Codes: A61K 8/31 Hydrocarbons
• CPC Class Codes: A61K 8/585 Organosilicon compounds
• CPC Class Codes: A61K 8/86 Polyethers
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61Q 9/02 Shaving preparations
• CPC Class Codes: B26B 21/443 Lubricating strips attached to the razor head
• CPC Class Codes: C10M 107/32 Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
• CPC Class Codes: C10M 145/40 Polysaccharides, e.g. cellulose
• CPC Class Codes: C10M 155/02 Monomer containing silicon
• CPC Class Codes: C10M 169/041 the additives being macromolecular compounds only
• CPC Class Codes: C10M 2209/1045 used as base material
• CPC Class Codes: C10M 2229/02 Unspecified siloxanes; Silicones
• CPC Class Codes: C10N 2050/023 Multi-layer lubricant coatings

Abstract

The invention relates to a solid compressed lubricating member for a razor cartridge comprising from 10% to 90% by weight of a particulate material comprising water soluble polymer and from 1% to 40% by weight of a silicone polymer or mixtures thereof; wherein at least a portion of said water soluble polymer particulate is spray coated with said silicone polymer and methods of manufacture thereof.

Claims

1. A solid compressed lubricating member for a razor cartridge comprising:

i) from 10% to 90% by weight of a particulate material comprising a water soluble polymer and

ii) from 1% to 40% by weight of a silicone polymer or mixtures thereof;

wherein at least a portion of said water soluble polymer is spray coated with said silicone polymer compound.

2. The solid compressed lubricating member for a razor cartridge according to claim 1, wherein said lubricating member comprises from 10% to 40%, by weight of said silicone polymer or mixture thereof.

3. The solid compressed lubricating member for a razor cartridge according to claim 1, wherein said silicone polymer or mixtures thereof are selected from dimethicones, cyclomethicones, phenyl trimethicones, trimethyl pentaphenyl trisiloxane, phenylated silicones and or mixtures thereof.

4. The solid compressed lubricating member for a razor cartridge according to claim 1, further comprising a hydrophobic compound or mixtures thereof, wherein said hydrophobic compound or mixtures thereof is selected from natural oil or wax, synthetic oil or wax, trigylcerides, skin active agents, senates and mixtures thereof.

5. The solid compressed lubricating member for a razor cartridge according to claim 4, wherein said hydrophobic compound or mixtures thereof comprises capric and or caprylic triglycerides, grape seed oil, olive oil, shea butter, cocoa butter, lanolin, essential oils, peppermint oil, isohexadecane, petrolatum and mixtures thereof.

6. The solid compressed lubricating member for a razor cartridge according to claim 1, wherein said silicone polymer has a surface tension of 35 mN/m or less.

7. The solid compressed lubricating member for a razor cartridge according to claim 1, wherein said silicone polymer has a melting point of less than 45°

C.

8. The solid compressed lubricating member for a razor cartridge according to claim 1, wherein said lubricating member has a bulk density of 1000 kg/m³ to 1200 kg/m³.

9. The solid compressed lubricating member for a razor cartridge according to claim 1, wherein said particulate, has an average particle size of from 50 microns to 1250 microns.

10. The solid compressed lubricating member for a razor cartridge according to claim 1, wherein said water soluble polymer comprises polyethylene oxide polymer.

11. The solid compressed lubricating member for a razor cartridge according to claim 1, wherein at least 95%, preferably substantially 100% of said water soluble polymer is spray coated with said silicone polymer.

12. The solid compressed lubricating member according to claim 1, for a razor cartridge in the form of a tablet.

13. The hair removal cartridge comprising a lubricating member according to claim 1.

14. The method of manufacturing a lubricating member according to claim 1, comprising the steps of

i) Providing a particulate of said water soluble polymer,

ii) Spray coating said silicone polymer onto said water soluble polymer particulates and

iii) Applying pressure onto said spray coated particulates to form a tablet.

15. The method according to claim 14, further comprising the steps of forming a liquid of said silicone polymer prior to said spray coating step.

16. The method according to claim 14, further comprising the steps of filling a pre-form with said particulates prior to the application of pressure and removing said compressed form from said pre-form.