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, 20415922, 2041592, 20415924, 204162R, 260 4237, 260 79, 260830S, C08F 246, B01J 110
Patent
active
040522830
ABSTRACT:
An improved process for production of sulfhydryl-terminated compounds by reaction of an allene compound and hydrogen sulfide is disclosed wherein the reaction is carried out in the presence of ultraviolet light of wavelength substantially above 2600 Angstroms and of an organic photosensitizing reagent to obtain a substantially colorless product of improved purity at an increased reaction rate. The invention also includes polymerization of the crude sulfhydryl-terminated product with an unsaturated compound to prepare sulfhydryl-terminated polythioethers which are useful as chemical intermediates and precursors of elastomeric sealants, such as architectural sealants.
REFERENCES:
patent: 2398481 (1946-04-01), Vaughan
patent: 2411983 (1946-12-01), Vaughan
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: 3992274 (1976-11-01), Dannels
Casella P. F.
Hooker Chemicals & Plastics Corporation
Mudd J. F.
Stein D. A.
Turer Richard B.
LandOfFree
Sensitized production of sulfhydryl compounds using ultraviolet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sensitized production of sulfhydryl compounds using ultraviolet , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensitized production of sulfhydryl compounds using ultraviolet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1773421