Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1976-10-04
1977-10-04
Turer, Richard B.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
204158R, 20415918, 2041592, 204162R, 260 4237, 260 79, 260830S, C08F 246, B01J 110
Patent
active
040522814
ABSTRACT:
An improved process is disclosed for production of sulfhydryl-terminated compounds by reaction of an allene and hydrogen sulfide initiated with ultraviolet light of wavelength above about 2600 Angstroms to obtain a colorless product of improved purity. The invention also includes the polymerization of an unsaturated hydrocarbon with the sulfhydryl-terminated product to prepare a sulfhydryl-terminated polythioether. These compounds are useful as chemical intermediates and precursors of elastomeric sealants, such as architectural sealants.
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patent: 2873239 (1959-02-01), Nummy et al.
patent: 3398200 (1968-08-01), Griesbaum et al.
patent: 3412001 (1968-11-01), Edwards
patent: 3488270 (1970-01-01), Griesbaum et al.
patent: 3992289 (1976-11-01), Dannels et al.
Dannels Bobby F.
Geering Emil J.
Casella Peter F.
Hooker Chemicals & Plastics Corporation
Mudd James F.
Stein David A.
Turer Richard B.
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