Gel toothpastes

• US 3,980,767 A
• Filed: 10/15/1974
• Issued: 09/14/1976
• Est. Priority Date: 07/23/1968
• Status: Expired due to Term

• Current Assignee: Beecham Group PLC (GlaxoSmithKline PLC)
• Original Assignee: Beecham Group PLC (GlaxoSmithKline PLC)
• Inventors: Healey, John Maxwell, Chown, James Philip
• Primary Examiner(s): Brust, Joseph Paul
• Assistant Examiner(s): Owens, Cary
• Application Number:
  US05/514,376
• Time in Patent Office: 700 Days
• Field of Search: 424/52, 424/49
• US Class Current: 424/52
• CPC Class Codes: A61K 2800/262 Transparent; Translucent
• CPC Class Codes: A61K 8/0237 Striped compositions
• CPC Class Codes: A61K 8/042 Gels
• CPC Class Codes: A61Q 11/00 Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses

Abstract

The invention relates to a toothpaste having a main body which is a transparent or translucent gel and secondary body of cleaning and polishing toothpaste contained within the main body in the form of a core or cores or stripe or stripes. The secondary body may contain materials, such as compounds of calcium or other polyvalent metals, which are normally incompatible with the transparent or translucent gel state of the main body.

Claims

1. A toothpaste consisting essentially of a first transparent gel body substantially free of dental abrasive and a second gel body or bodies comprising a solid finely divided dentally acceptable abrasive, said second gel body or bodies being partially or wholly disposed within the first gel body, the first gel body and second gel body or bodies having similar rheological properties.

2. A toothpaste according to claim 1 wherein the second gel body or bodies comprising the abrasive is or are disposed as an optically contrasting stripe or stripes extending longitudinally of said first gel body.

3. A toothpaste according to claim 1 wherein the second gel body or bodies comprising the abrasive is or are disposed as an optically contrasting core or cores wholly within the first gel body.

4. A toothpaste according to claim 1 wherein the first gel body and the second gel body or bodies have substantially the same composition except for the abrasive.

5. A toothpaste according to claim 1 wherein the abrasive constitutes 15 to 75% by weight of the second gel body or bodies.

6. A toothpaste according to claim 1 wherein the first gel body constitutes about 99.8 to 90% by weight of the toothpaste and the second gel body constitutes about 0.2 to 10% by weight thereof.

7. A toothpaste according to claim 1 wherein each gel body contains an effective amount of sodium monofluorophosphate less than 1%.