Process and apparatus for nucleation control adapted for reactio

Details Process and apparatus for nucleation control adapted for reactio Process and apparatus for nucleation control adapted for reactio

1980-08-21

1982-01-26

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

73 19, 264 453, 264 50, 264DIG83, 425135, B29D 2700, G01N 714

Patent

active

043128203

ABSTRACT:
A novel apparatus and method are provided for monitoring gas entrainment in liquid precursors for reaction injection molding (RIM). In accordance with the invention, a nucleated RIM precursor is sampled and the sample subjected to a controlled volumetric change. The measured pressure of the expanded or compressed sample is compared to that corresponding to the ideal degree of gas entrainment. The comparison is used to control the addition or withdrawal of entrained gas.

REFERENCES:
patent: 3521478 (1970-07-01), Magorien
patent: 3673853 (1972-07-01), Griswold et al.
patent: 4050896 (1977-09-01), Raffel et al.
patent: 4073840 (1978-02-01), Saidla
patent: 4157427 (1979-06-01), Ferber
patent: 4236404 (1980-12-01), Ketchum et al.

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