Darstellung und polymerisation von ungesättigten 1,3,5‐triphenylbenzolderivaten

Greber, Von Gerd; Egle, Gert

doi:10.1002/macp.1960.020400101

Cited by 10 publications

(1 citation statement)

References 23 publications

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“…This time, the authors have synthesized a new kind of nonionic surfactantants containing dimethylpolysilane, and have compared them with polysilmethylene surfactants (CHa)~Si (OH~Si(OH~>~) n(Om)aO(OH~OH~O)mH [6] and polysiloxane surfactants The effects of the hydrophile on the surface activities in these samples were then investigated.…”

Section: R-och2mentioning

confidence: 99%

Syntheses and properties of surfactants containing organometals: IV. Organo silicone

Maki¹,

Saeki²,

Ikeda³

et al. 1969

J Americ Oil Chem Soc

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The authors synthesized nonionic surfactants containing dimethylpolysilane, dimethylpolysilmethylene and dimethylpolysiloxane as the hydrophobic groups, and investigated their surface activities. In their ability to lower the aqueous surface tension, the polysiloxane surfactants were the most active, and there is little reason to choose between the other two kinds of surfactants. With regard to the ability of lowering the interfacial tension between water and silicone oil, the polysilmethylene surfaetants were most effective when the concentration of aqueous solution was below 0.5 wt %. Above this concentration, however, the polysiloxane surfactants were superior. Also investigated was the lowering of surface tension of nonaqueous polyols and their ability to wet low energy hydrophobic surfaces such as polyethylene.

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Section: R-och2mentioning

confidence: 99%

Syntheses and properties of surfactants containing organometals: IV. Organo silicone

Maki¹,

Saeki²,

Ikeda³

et al. 1969

J Americ Oil Chem Soc

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Darstellung und polymerisation von dithiokohlensäure‐S,S′‐divinylester

Ringsdorf¹,

Overberger²

1961

Makromol. Chem.

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ZUSAMMENFASSUNG:Dithiokohlensaure-S,S'-divinylester wurde durch Anlagenmg von Phosgen an dthylensulfid und anschlieflende Dehydrohalogenierung des Dithiokohlensiiure-S,S'-bis-(@-chlorathy1)esters dargestellt. Die Divinylverbindung la& sich radikalisch polymerisieren. Losungspolymerisation in Benzol fuhrt iiber einen intramolekularen-intermoleknlaren Reaktionsmechanismus zu loslichen Polymeren mit der a-Methylen-trimethylendithiocarbonatGruppe als Hauptketteneinheit. SUMMARY:S,S'-Divinyldithiocarbonate was prepared by the dehydrohalogenation of the reaction product of 1 mole of phosgene and 2 moles of ethylene sulfide. The divinyl compound was susceptible to radical polymerization. Solution polymerization in benzene yielded a soluble polymer, via an intramolecular-intermolecular reaction mechanism, with the a-methylenetrimethylenedithiocarbonate group as main chain unit.

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Crystalline modifications of cationically polymerized poly(3‐methyl butene‐1)

Kennedy

Thomas

1963

Makromol. Chem.

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The low temperature cationic polymerization of 3-methyl butene-1 was studied. Two crystalline polymer modifications (a und @) have been characterized by their X-ray diffraction patterns. The "d" spacings of the a and @ forms are (in 8 ) : 7.8, 5.4, 4.6, 2.8, 2.4, and 2.1; and 9.0, 5.4, 4.8, 3.6, 2.8, and 2.1, respectively. The (x modScation was oriented and the repeat distance in the "c" direction is 7.8 A, This indicates 2 structural units in the repeat unit. The a modification is more stable than the f 3 form e.g., when p specimens were reprecipitated from solutions the a form was obtained. ZUSAMMENFASSUNG:Die kationische Tieftemperaturpolymerisation von 3-Methylbuten-1 wurde untersucht. Zwei kristalline Modifikationen (a und @) wurden durch RoNTGENdiagramme charakterisiert. Die ,,d"-Abstande sind (i .8): 1,8, 5,4, 4,6, 2,8, 2,4, 2,l fiir die a-Form und 9,0, 5,4, 4.8, 3,6, 2,8, 2,l fur die @-Form. Die a-Form ist orientiert,und die Identitiitspenode in der c-Richtung ist 1,8 A; dies deutet auf 2 Grundeinheiten in der Einheitszelle. Die a-Modifikation ist stabiler als die @-Form, d.h. wenn P-Proben aus Losung umgefiillt wurden, erhielt man die a-Form.

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Darstellung und polymerisation von ungesättigten 1,3,5‐triphenylbenzolderivaten

Cited by 10 publications

References 23 publications

Syntheses and properties of surfactants containing organometals: IV. Organo silicone

Syntheses and properties of surfactants containing organometals: IV. Organo silicone

Darstellung und polymerisation von dithiokohlensäure‐S,S′‐divinylester

Crystalline modifications of cationically polymerized poly(3‐methyl butene‐1)

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