JPS6216922B2 - - Google Patents

Description

[Detailed description of the invention]

TECHNICAL FIELD The present invention relates to a toothpaste that has a ridge when extruded. Sodium carboxymethyl cellulose (hereinafter abbreviated as CMC) or natural polysaccharides have traditionally been used as a binding agent for toothpaste, but the quality and price are stable, and the quality of toothpaste can be designed by selecting the grade. CMC is becoming more important from the point of getting used to it. Since the abrasive material used in toothpaste is generally an electrolyte, CMC is a grade with low salt sensitivity.
That is, those having a relatively high degree of etherification are used. In addition, it is better to use CMC, which has a relatively high degree of etherification on the surface of the toothpaste extruded from the tube. On the other hand, for the shape retention of extruded toothpaste, it is better to use CMC with a low degree of etherification. Also,
CMC with a high degree of etherification, with a degree of etherification of 1.5 or more
is more expensive to manufacture than those with a low degree of etherification. As a result of various comparative tests, the inventors found that CMC with a degree of etherification in the range of 0.8 to 1.5 is suitable as a toothpaste binder in terms of cost performance.
As long as CMC was used, the amount of toothpaste extruded was insufficient. As a result of research into improving this method, it was found that the surface condition of toothpaste could be dramatically improved by using particularly finely pulverized CMC, leading to the present invention. That is, the present invention relates to a toothpaste using as a binder a finely powdered CMC of which 90% by weight or more passes through a 300 mesh. CMC used as a binder is added to toothpaste as an aqueous solution, and the particle size of CMC seems to be unrelated. ,
The condition of the dough is significantly improved. CMC generally contains microgels and microfibers, and their presence is thought to have had a negative impact on the surface condition of toothpaste.
It is considered that these effects were substantially eliminated by pulverization. The present invention will be explained below with reference to Examples, but the present invention is not limited thereto. Example 1 and Comparative Example 1 Toothpastes were manufactured using the same formulation using CMC as a binder. The CMC used in the comparative examples was a commercially available powdered CMC, and the one used in the examples was a commercially available product that was further finely ground. The particle size distribution of the commercially available product and the finely ground product is shown.

[Table] The toothpaste prescription is shown below. Calcium pyrophosphate 42.0% Glycerin 15.0〃 Sorbit 70% 10.0〃 CMC Etherification degree 1.30 1.4〃 1% aqueous solution viscosity 200 cps, 25℃ Stannous fluoride 1.4〃 Fragrance (wintagrin type) 1.0〃 Satucalin sodium 0.2〃 Sodium lauryl sulfate 2.0〃 Butyl paraoxybenzoate 0.1〃 Water 27.9〃 100.0〃 When the prepared toothpaste was put into a tube and extruded, Example 1 was superior to Comparative Example 1 in terms of good texture, smoothness of the dough, fineness of the skin, etc. However, no differences were observed in other physical properties such as shape retention and water retention. Example 2 and Comparative Example 2 Similar to Example 1 and Comparative Example 1, commercially available CMC
A toothpaste was prepared using the same formulation using the finely ground product. The particle size distribution of the commercially available product and the finely ground product is shown.

[Table] The toothpaste prescription is shown below. Heavy calcium carbonate 40.00% by weight Silicic anhydride 2.00 〃 Glycerin 17.35 〃 CMC Etherification degree 0.90 1.75 〃 1% aqueous solution viscosity 150 cps, 25℃ Satucharin sodium 0.20 〃 Butyl paraoxybenzoate 0.02 〃 Sodium lauryl sulfate 2.00 〃 Sodium lauroyl sarcosine 0.02 〃 Fragrance 1.15 〃 Water 35.51 〃 100.00 〃 When the prepared toothpaste was put into a tube and extruded, the extruded product of Example 2 had better enamel and other surface conditions than Comparative Example 2.

Claims (1)

[Claims] 1. A toothpaste characterized by using as a binder finely powdered sodium carboxymethylcellulose, of which 90% by weight or more passes a 300 mesh.