Ultrasonic calibration material and method

Details Ultrasonic calibration material and method Ultrasonic calibration material and method

1990-10-04

1993-03-23

Lovering, Richard D.

Chemistry: analytical and immunological testing

Composition for standardization, calibration, simulation,...

73644, 2523152, 2524081, 523137, G01N 2900, G01N 3100, G01N 33483, G21F 110

Patent

active

051963434

ABSTRACT:
Ultrasonic calibration material produced by polymerization of acrylamide with N,N'-methylene-bis-acrylamide in vacuum-degassed liquid solutions such as water, ethylene glycol, emulsions of non-miscible liquids with water and blends of liquids in which a homogeneous and permanent suspension of solid and liquid particles (e.g.: alumina, boron nitride, graphite, water-filled phenolic microspheres, glass microspheres, polyethylene, turpentine oil) is chemically achieved by polymerization of an acrylic acid polymer.

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patent: 4940740 (1990-07-01), Folda et al.
patent: 5053341 (1991-10-01), Companion

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