| 摘要 |
<P>PROBLEM TO BE SOLVED: To develop an aqueous composition containing alginic acid or its derivative used for various products requiring tackiness, especially, a dental alginate impression material composition used in combination with a hardening agent, and capable of keeping viscosity stably for a long period. <P>SOLUTION: The aqueous composition containing alginic acids contains 1-2,000 pts.mass water including ≥10 mass% (B) heavy water (generally D<SB POS="POST">2</SB>O) to 1 pt.mass (A) alginic acid or its derivative (for example, an alginate, an ester derivative of alginic acid, or an ether derivative of alginic acid). <P>COPYRIGHT: (C)2012,JPO&INPIT |
