Claims
- 1. Apparatus for use with a polymerizable composition comprising in combination:
- container means to be filled with a polymerizable composition for forming a liquid column therein and along a length thereof;
- reciprocating means for applying a reciprocating motion to said liquid column within said container means;
- gelling means for gelling said polymerizable composition within said container means;
- means for determining when said reciprocating motion of said liquid column stops due to gelation of the liquid column across a diameter thereof anywhere along the length of said liquid column.
- 2. The apparatus of claim 1, wherein said means for applying reciprocating motion to said liquid column comprises a pulsed energy source.
- 3. The apparatus of claim 2, wherein said pulsed energy source comprises air compressed between a first pressure and a second pressure being applied to the liquid column within said container means.
- 4. The apparatus of claim 1, wherein said gelling means comprises a white light source.
- 5. The apparatus of claim 1, wherein said gelling means comprises an ultraviolet light source.
- 6. The apparatus of claim 1, wherein said gelling means comprises a monochromatic light source.
- 7. The apparatus of claim 1, wherein said gelling means comprises a heat source.
- 8. The apparatus of claim 1, wherein said gelling means comprises an electron beam source.
- 9. The apparatus of claim 1, wherein said gelling means comprises a catalytic hardener.
- 10. The apparatus of claim 1, wherein said container means comprises a tube.
- 11. The apparatus of claim 1, wherein said container means is closed at one end with an air pocket between the closed end and the liquid column and open at a second end with said open end being filled with a column of air, said column of air being fluid connected to said reciprocating means.
- 12. A method for determining the gel time of a polymerizable composition comprising the steps of:
- placing a polymerizable composition within a container forming a liquid column;
- subjecting said liquid column to axial reciprocating motion within said container;
- applying a motion sensor to said liquid column;
- applying a polymerizing means to said liquid column thereby causing gelation and causing stoppage of said reciprocating motion of said liquid column; and determining gel time by noting the difference in time between initiation of polymerization and the stopping of reciprocating motion.
Parent Case Info
This application is a continuation, of application Ser. No. 07/558,587, filed Jul. 27, 1990, now abandoned.
US Referenced Citations (8)
Non-Patent Literature Citations (4)
Entry |
Perkin Elmer Corporation: Thermal Analysis User Newsletter (Feb. 1990). |
Perkin Elmer Corporation: Thermal Analysis DPA7 (Oct. 1988). |
Perkin Elmer Corporation: DMA Dynamic Mechanical Analyzer (Feb. 1990). |
Perkin Elmer Corporation: Price List (Jun. 1989). |
Continuations (1)
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Number |
Date |
Country |
Parent |
558587 |
Jul 1990 |
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