Polymeric composition
US5718586A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1997 |
| Grant date | Feb 17, 1998 |
| Priority date | — |
| Expiry date | Jan 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymeric composition is provided, comprising: PA1 a base component, comprising a first alkenyl-terminated short chain polydiorganosiloxane and a cross-linker; and PA1 a catalytic component, comprising a second alkenyl-terminated short chain polydiorganosiloxane and a catalyst, wherein: PA1 at least one of the base component and the catalytic component further comprises a filler; PA1 said first and second alkenyl-terminated short chain polydiorganosiloxanes together comprise from about 15 wt % to about 40 wt %, PA1 said cross-linker comprises from about 1 wt % to about 15 wt %, PA1 said catalyst comprises from about 0.005 wt % to about 5 wt %, and PA1 said filler comprises from about 30 wt % to about 80 wt %, based on the total weight of the composition; and PA1 wherein the composition sets to a solid elastomeric state at about room temperature following mixing of said base component and said catalytic component. Also provided is a method of making a solid die dental model, comprising the steps of: PA1 preparing an impression of a dental structure, and PA1 fabricating a dental model using said impression by depositing therein a flowable modeling composition as described. A dental…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.