IP Library Granted Patent US 7,033,614
Granted Patent B2
US 7,033,614 · App. 10/648,828 · Granted Apr 25, 2006

Bismuth oxychloride compositions and methods of rinsing

Assignee: EMD Chemicals, Inc. (Previously EM Industries)
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Quick Facts
Patent No.
US 7,033,614
App. No.
10/648,828
Granted
Apr 25, 2006
Kind
B2
Abstract

A rinse-off composition comprising in percent by weight 0.10–10.00 of a dispersion of bismuth oxychloride 3.50–90.00 of a surfactant, 0.001–0.050 of a dye, 3.00–15.00 of an emollient and 10.00–80.00 of water; said dispersion of bismuth oxychloride containing bismuth oxychloride platelet particles having a lateral width of 5–25 microns and a thickness of 20–200 nm, said platelet particles being substantially covered a liquid vehicle and said liquid vehicle being present in an amount sufficient to maintain a stable dispersion and to provide for facile resuspension.

Claims (17)

1. A rinse-off composition comprising in percent by weight 0.10–10.00 of a dispersion of bismuth oxychloride, 3.50–90.00 of a surfactant, 0.001–0.050 of a dye, 3.00–15.00 of an emollient and 10.00–80.00 of water; said dispersion of bismuth oxychioride comprising bismuth oxychloride platelet particles having a lateral width of 5–25 microns and a thickness of 20–200 nm, said platelet particles being substantially covered by a liquid vehicle and said liquid vehicle being present in an amount sufficient to maintain a stable dispersion and to provide for a facile resuspension.

2. A rinse-off composition according to claim 1 , wherein said liquid vehicle is present in the dispersion in a concentration of about 10–80% by weight.

3. A rinse-off composition according to claim 1 , wherein the liquid vehicle is present in the dispersion in a concentration of about 20–40% by weight.

4. A rinse-off composition according to claim 3 , wherein the lateral width of the bismuth oxychloride platelet particles is 10–15 microns and the thickness of said platelet particles is 40–80 nm.

5. A rinse-off composition according to claim 4 , wherein the bismuth oxychloride is present in the dispersion in a concentration of about 70% by weight and the liquid vehicle is present in the dispersion in a concentration of about 30% by weight.

6. A rinse-off composition according to claim 1 , wherein the liquid vehicle comprises octyl-hydroxy stearate.

7. A rinse-off composition according to claim 1 , comprising in percent by weight 0.50–2.00 of a dispersion of bismuth oxychloride, 40.00–65.00 surfactant, 0.005–0.20 of dye, 2.00–8.00 of emollient, and 15.00–40.00 of water.

8. A rinse-off composition according to claim 1 , wherein said liquid vehicle has properties of viscosity, emolliency, suspension ability, low oxidation potential, pale color and clarity equivalent to octyl-hydroxy stearate, and is slower evaporating than water, has a boiling point greater than 150° C., is lipophilic, and is liquid at room temperature.

9. A rinse-off composition according to claim 7 , wherein said liquid vehicle has properties of viscosity, emoillency, suspension ability, low oxidation potential, pale color and clarity equivalent to octyl-hydroxy stearate, and is slower evaporating than water, has a boiling point greater than 150° C., is lipophilic and is liquid at room temperature.

10. A rinse-off composition according to claim 2 , wherein the liquid vehicle comprises octyl-hydroxy stearate.

11. A rinse-off composition according to claim 3 , wherein the liquid vehicle comprises octyl-hydroxy stearate.

12. A rinse-off composition according to claim 4 , wherein the liquid vehicle comprises octyl-hydroxy stearate.

13. A rinse-off composition according to claim 1 , wherein said surfactant comprises a combination of anionic surfactant and amphoteric surfactant and said emollient comprises silicone fluids.

14. A rinse-off composition according to claim 4 , wherein said surfactant comprises a combination of anionic surfactant and amphoteric surfactant and said emollient comprises silicone fluids.

15. A rinse-off composition according to claim 6 , wherein said surfactant comprises a combination of anionic surfactant and amphoteric surfactant and said emollient comprises silicone fluids.

16. A rinse-off composition according to claim 7 , wherein the liquid vehicle consists essentially of octyl hydroxystearate.

17. A rinse-off composition according to claim 15 , and wherein the liquid vehicle consists essentially of octyl hydroxysterate.

Assignments (5)
CHANGE OF NAME Recorded Nov 6, 2017
From: MILLIPORE CORPORATION
To: EMD MILLIPORE CORPORATION
Reel/Frame 044377/0790 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2017
From: EMD MILLIPORE CORPORATION
To: MERCK PATENT GMBH
Reel/Frame 044687/0068 →
MERGER Recorded Nov 6, 2017
From: EMD CHEMICALS INC.
To: MILLIPORE CORPORATION
Reel/Frame 044687/0133 →
CHANGE OF NAME Recorded Jan 10, 2006
From: EM INDUSTRIES, INCORPORATED
To: EMD CHEMICALS INC.
Reel/Frame 017444/0069 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 4, 2004
From: LINZ, PHIL; CHAUDHURI, RATAN K.
To: EM INDUSTRIES
Reel/Frame 014949/0650 →
Continuity (1)
Related Publication 20050048014A1 · Mar 3, 2005