Lubricating members for razor cartridges

Patent metadata

Field	Value
Publication number	US-2016177218-A1
Application number	US-201514961954-A
Country	US
Kind code	A1
Filing date	Dec 8, 2015
Priority date	Dec 18, 2014
Publication date	Jun 23, 2016
Grant date	—

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.

First claim

What is claimed is:

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/m 3 to 1200 kg/m 3 .

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.

Assignees

• Gillette Co

Inventors

• Moloney Michael John
• Haines Christopher
• Stephens Alison Fiona
• Lu Bailu

Classifications

• A61K2800/624

  by macromolecular compounds · CPC title

• C10N2050/023

  Multi-layer lubricant coatings · CPC title

• A61K8/31 Primary

  Hydrocarbons · CPC title

• A61K8/86

  Polyethers · CPC title

• A61Q9/02

  Shaving preparations · CPC title