Diensynthesen auf dem Fettgebiet I. Die Dienzahl der Fette

Kaufmann, H. P.; Baltes, J.

doi:10.1002/lipi.19360430605

Cited by 65 publications

(6 citation statements)

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“…This modification was found necessary in order to obtain constant and reproducible results (9). Some modifications used in the Kaufmanrt diene determination (7) as well as the methods for determining the other data listed are described in another paper (10).…”

Section: 3mentioning

confidence: 99%

Bodying of Dehydrated Castor Oil

Mikusch¹

1940

Ind. Eng. Chem.

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Raw dehydrated castor oil and a varnish oil made from it were bodied at various temperatures. The increase of viscosity and the change in acid values were noted. A cook with Bakelite resin BR-2963 was included for comparison. Semilogarithmic plots of viscosity against time which approach straight lines were used to indicate the rate of bodying at different temperatures.The bodying of dehydrated castor oil proceeded three to four times as fast as that of linseed oil; for instance, 3.4 hours were required to obtain a 40-poise viscosity at 5600 F. with raw dehydrated castor oil. The doubling interval for bodying the oil-i. e., the difference in temperature corresponding to the doubling of the bodying rate-was THE steadily increasing importance assumed by dehydrated castor oil as a raw material in the paint and varnish and related industries has made a greater knowledge of its physical and chemical behavior necessary. Although this new drying oil was first believed of merit principally as a partial replacement for tung oil, it is recognized, today as an important independent vehicle and is used more often by itself than with other oils. Its behavior when bodied alone rather than in combination with other oils seems, therefore, of primary interest. However, although only one aspect of the new oil is considered here-i. e., its bodying propertiesits usefulness depends on many other properties as well, such as the longer life of its films, its excellent color retention, its pronounced water resistance and good pigment wetting characteristics, etc. (5).

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Section: 3mentioning

confidence: 99%

Bodying of Dehydrated Castor Oil

Mikusch¹

1940

Ind. Eng. Chem.

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“…Anthracene is determined quantitatively in the presence of other coal tar constituents by oxidation with chromic acid in glacial acetic acid to produce anthraquinone; by Diels -Alder reaction with maleic anhydride [42], [43]; by gas chromatography [44]; by UV spectroscopy [45], [46]; or by luminescence spectroscopy [47].…”

Section: Discussionmentioning

confidence: 99%

Anthracene

Collin¹,

Höke²,

Talbiersky³

2006

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Physical Properties 2. Chemical Properties 3. Production 4. Analysis 5. Uses 6. Toxicology and Environmental Aspects

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“…When Toms (SO) in 1928 calculated the percentage of alpha-eleostearic triglyceride in tung oil from the formula where q and p are the total and partial iodine values, he unwittingly introduced the concept of diene value, although this term was suggested only 8 years later by Kaufmann and Baltes (15). The number 87.7, which he calculated as the difference between the iodine values for the addition of 18 and 12 atoms of iodine, respectively, to the triglyceride is actually the diene value according to the later definition, which was based on the consideration, that for each molecule of maleic anhydride added one double bond less than originally present remains.…”

Section: Quantitative Relationshipmentioning

confidence: 99%