Patent EP0161898A2 successfully refreshed from Google Patents.
EP0161898A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Dentifrice compositions
Assignee: Unilever PLC
•
Filing: 1985-05-07
•
Granted: —
•
Expires: 2005-05-07
Abstract
Abstract It is disclosed that a dentifrice which includes a surfactant and an anti-plaque agent comprising a substantially water--insoluble non-cationic antimicrobial agent or a zinc salt or a mixture thereof has enhanced activity when the dentifrice comprises at least 0.2% by weight of a lamellar liquid crystal surfactant phase having a lamellar spacing of less than 6.0 nm.
Inventors
- 👤 Roger Michael Lane
- 👤 Derek Michael Clarke Hull
- 👤 Charles Allan Saxton
- 👤 Franciscus J. G. Van Der Ouderaa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 14:20
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61K8/463; A61K8/02; A61K8/0295; A61K8/19; A61K8/27; A61K8/33; A61K8/34; A61K8/347; A61K8/36; A61K8/365; A61Q; A61Q11/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
91 words
A dentifrice composition effective to inhibit the growth of dental plaque comprising a surfactant and an anti-plaque agent consisting of a substantially water-insoluble non-cationic antimicrobial agent or a zinc salt having a water solubility greater than 2x10 -4 g per 100g of water at 25°C and at pH 7, or a mixture thereof, characterised in that there is present in the dentifrice composition a lamellar liquid crystal surfactant phase having a lamellar spacing of less than 6.0 nm in an amount of at least 0.2% by weight of the dentifrice composition.
Claim 2
Dependent Claim
91 words
A dentifrice composition effective to inhibit the growth of dental plaque comprising a surfactant and an anti-plaque agent consisting of a substantially water-insoluble non-cationic antimicrobial agent or a zinc salt having a water solubility greater than 2x10 -4 g per 100g of water at 25°C and at pH 7, or a mixture thereof, characterised in that there is present in the dentifrice composition a lamellar liquid crystal surfactant phase having a lamellar spacing of less than 6.0 nm in an amount of at least 0.2% by weight of the dentifrice composition.
Claim 3
Dependent Claim
25 words
A dentifrice composition as claimed in Claim 1, characterised in that the lamellar spacing of the liquid crystal surfactant phase is less than 4.4 nm.
Claim 4
Dependent Claim
35 words
A dentifrice composition as claimed in Claim 1 or Claim 2, characterised in that the lamellar liquid crystal surfactant phase is present in an amount of at least 0.5% by weight of the dentifrice composition.
Claim 5
Dependent Claim
51 words
A dentifrice composition as claimed in any of the preceding claims, characterised in that in the formulation of the dentifrice there is also included as an ingredient from 0.1 to 3% by weight of sodium chloride or a water-soluble salt, other than a fluorine-containing salt, in an equivalent molar cation concentration.
Claim 6
Dependent Claim
31 words
A dentifrice composition as claimed in any of the preceding claims, characterised in that in the formulation of the toothpaste there is included 0.1 to 1% by weight of sodium chloride.
Claim 7
Dependent Claim
28 words
A dentifrice composition as claimed in any of the preceding claims, characterised in that the anti-plaque agent comprises a mixture of an antimicrobial agent and a zinc salt.
Claim 8
Dependent Claim
19 words
A dentifrice composition as claimed in any of the preceding claims, characterised in that the antimicrobial agent is Triclosan.
Claim 9
Dependent Claim
20 words
A dentifrice composition as claimed in any of the preceding claims, characterised in that the zinc salt is zinc citrate.
Claim 10
Dependent Claim
26 words
A dentifrice composition as claimed in any of the preceding claims, characterised in that the anti-plaque agent consists of a mixture of Triclosan and zinc citrate.
Claim 11
Dependent Claim
34 words
A dentifrice composition as claimed in Claim 9, characterised in that it comprises 0.05 to 0.3% Triclosan, 0.3% to 1.5% zinc citrate, 0.2 to 1% sodium chloride and 1 to 3% sodium lauryl sulphate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.