Polyvinylene sulfide and polyvinylene selenide
AssigneeDirector-General of Agency of Industrial Science and Technology
InventorsShu Kambara, Tatsumi Arakawa, Akio Takahashi
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Abstract
A novel polyvinylene chalcogenide of the formula: --CH.dbd.CH--L).sub.n wherein L is S or Se, is provided. This compound is prepared by reacting an ethylene dihalide of the formula: XHC.dbd.CHX' (X and X' are selected from F, Cl, Br and I) with an alkali metal chalcogenide or bichalcogenide.
Claims9
A polyvinylene chalcogenide represented by the following structural formula (I):
- --CH.dbd.CH--L).sub.n (I)
- wherein L stands for sulfur or selenium.
A polyvinylene chalcogenide represented by the following structural formula (I):
- --CH.dbd.CH--L).sub.n (I)
- wherein L stands for sulfur or selenium, wherein said polyvinylene chalcogenide is prepared by reacting a 1,2-dihaloethylene represented by the following formula (II):
- XHC.dbd.CHX' (II)
- wherein X and X' are F, Cl, Br, or I, with an alkali metal chalcogenide represented by the following formula (III):
- M.sub.2 L
- wherein M is an alkali metal and L is sulfur or selenium or an alkali metal bichalcogenide represented by the following formula (IV):
- MHL
- wherein M and L are the same as defined above and H is hydrogen wherein the molar ratio of the 1,2-dihaloethylene to the chalcogenide or bichalcogenide is in the range of from 0.8 to 2.
A polyvinylene chalcogenide represented by the following structural formula (I):
- --CH.dbd.CH--L).sub.n (I)
- wherein L stands for sulfur or selenium, wherein said polyvinylene chalcogenide is in the form of a powder having a bright black color and having no definite transition point at a temperature of up to 400.degree. C.
A polyvinyl sulfide having the formula (CH.dbd.CH--S).sub.n and said polyvinylene sulfide exhibits, in the infrared spectrum, an absorption due to an olefinic C--H stretching vibration observed at 3.080 cm.sup.-1, an absorption due to a carbon-to-carbon double bond at 1,600 cm.sup.-1 and an absorption inherent in the sulfur-containing compound at 700 cm.sup.-1, exhibits, in the .sup.13 C-NMR spectrum, a signal due to an alkenic carbon observed at 131 ppm;
- contains 40.4% of carbon, 3.65% of hydrogen and 55.94% of sulfur;
- and has diffraction peaks at a value of 1.93, 2.70, 2.84 and 3.98 in the X-ray diffractometry.
A polyvinylene sulfide having the formula (CH.dbd.CH--S).sub.n and said polyvinylene sulfur exhibits, in the infrared spectrum, an absorption due to an olefinic C--H stretching vibration observed at 3,075 cm.sup.-1, an absorption due to a carbon-to-carbon double bond at 1,600 cm.sup.-1 and an absorption inherent in the sulfur-containing compound at 700 cm.sup.-1, exhibits, in the .sup.13 C-NMR spectrum, a signal due to an alkenic carbon observed at 132 ppm;
- has a carbon/hydrogen/sulfur atomic ratio of 1.98/2.04/1.02;
- and has diffraction peaks at values of 1.93, 2.70, 2.84, and 3.98 in the X-ray diffractometry.
A polyvinylene sulfide having the formula (CH--CH--S).sub.n and said polyvinylene sulfide exhibits an absorption due to a carbon-to-carbon double bond at 1,600 cm.sup.-1 in the infrared spectrum;
- exhibits a signal due to an alkenic carbon observed at 131 ppm in the .sup.13 C-NMR spectrum;
- and has a carbon/hydrogen/sulfur of 2.2/1.8/1.
A polyvinylene selenide having the formula selenide having and said polyvinylene chalcogenide exhibits an absorption due to a carbon-to-carbon double bond at 1,600 cm.sup.-1 in the infrared spectrum.
Dependencies are inferred from the claim text.