Related Experiment Videos
[Application of isocyanate separating agent for acrylic resin]
Shika Zairyo, Kikai = Journal of the Japanese Society for Dental Materials and Devices
|July 1, 1989
Summary
A novel isocyanate-based coating agent offers superior acrylic resin separation from gypsum molds. This new agent creates a glossier, smoother resin surface compared to traditional water-soluble alginates.
Area of Science:
- Materials Science
- Polymer Chemistry
Context:
- Traditional water-soluble alginates are standard for separating acrylic resin from gypsum molds.
- These alginates form a thin, insoluble film on the gypsum surface.
Purpose:
- To develop and investigate a new isocyanate-type coating agent for improved acrylic resin separation.
- To evaluate the properties and performance of this novel separating agent.
Summary:
- A new separating agent was formulated using trimethylol-propane-tolylenediisocyanate, ethyl-acetate, and bis-tributyl-tin oxide catalyst.
- The agent forms a thin film, followed by alkyl-phosphate application, facilitating easy resin separation.
- Molds treated with this agent exhibited a glossy, hard surface, resulting in glossier, smoother cured resins.
Impact:
- Provides a superior alternative to conventional alginate separating agents.
- Enhances the surface finish of cured acrylic resins.
- Potentially improves efficiency and aesthetics in dental and other resin molding applications.