Titrationen mit freiem Rhodan

Kaufmann, H. P.; Gaertner, Peter

doi:10.1002/cber.19240570609

Cited by 17 publications

(3 citation statements)

References 3 publications

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“…REACTION WITH THIOCYANOGEN Kaufmann and G&rtner (8) showed that thiocyanogen may be used to determine ethylenic bonds. In applying this reagent to natural rubber Pummerer and Stark (14) found no advantages .…”

Section: T H Imentioning

confidence: 99%

Unsaturation of Polyisobutylenes and Butyl Rubber

Rehner¹

1944

Ind. Eng. Chem.

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The reactions of polyisobutylenes and of isoprene-isobutylene copolymers with nitrosobenzene, thiocyanogen, iodine monochloride, and ozone have been utilized for determining the low degrees of unsaturation of these polymers. Values based on the use of nitrosobenzene appear to be high because the addition reaction is accompanied by oxidation phenomena; those with thiocyanogen are complicated by the simultaneous formation of polymerized thiocyanogen and by apparently incomplete reaction. The iodine monochloride reactions tend to give high values through the occurrence of substitution reactions. Values based on ozone degradation at the double bonds appear to be reliable, the unsaturation based on the limiting viscosity of the degraded polymer being in reasonably good agreement with that determined by end group analyses.

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Section: T H Imentioning

confidence: 99%

Unsaturation of Polyisobutylenes and Butyl Rubber

Rehner¹

1944

Ind. Eng. Chem.

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“…Kaufmann and Gaertner (19) have worked out a series of thiocyanometric determinations, which make it possible to titrate solutions of thiocyanogen in organic solvents with aqueous solutions of potassium iodide, hydrogen sulfide, and sodium thiosulfate.…”

Section: Properties Of the Halogensmentioning

confidence: 99%

Free Inorganic Radicals.

Walden¹,

Audrieth²

1928

Chem. Rev.

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“…Rehner (14) has shown that nitrosobenzene, which was found to react quantitatively with natural rubber by Bruni and Geiger (8) requires more than 100 hours for complete reaction. The thiocyanogen procedure described by Kaufmann and Gaertner (7) requires in the neighborhood of 72 hours. Rehner (14) found also that Marshall reagent (iodine monochloride in carbon tetrachloride) used by Boeseken and Gelber (8) requires a reaction time of approximately 24 hours to approach completion.…”

mentioning

confidence: 99%