Patent · US Expired

Dentifrice

US4102992A · kind A · utility

38Cited by
9References
11Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 17, 1976
Grant dateJul 25, 1978
Priority date—
Expiry dateNov 17, 1996

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61K8/19
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

Dentifrice compositions containing a cleaning agent in particulate form whose abrasivitiy is reduced by incorporating a water-insoluble particulate polymeric material less abrasive than and of lower average density than the cleaning agent which is calcium carbonate. The polymeric material is typically polymethylmethacrylate or polystyrene. The respective proportions are preferably 75-99.9% to 0.1-25%, by weight. The polymeric material is in the form of particles which are not substantially agglomerated and which may be of a variety of geometrical shapes including solid and hollow spheres, cavitied or uncavitied, or composed of a lattice of material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.