Results 211 to 220 of about 4,534 (262)
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1976
The chemistry of Thiokol LP® liquid polysulfide polymers and their ambient temperature vulcanization to rubbery products is presented. Compounding, chemical and physical properties, testing, and specification data for polysulfide building sealants are also included.
EA Peterson +3 more
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The chemistry of Thiokol LP® liquid polysulfide polymers and their ambient temperature vulcanization to rubbery products is presented. Compounding, chemical and physical properties, testing, and specification data for polysulfide building sealants are also included.
EA Peterson +3 more
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Rubber Chemistry and Technology, 1950
Abstract The chemistry of the condensation polymerization is reviewed briefly. The structures of the polymeric products as well as the effects of copolymerization, cross-linking, end groups, and molecular weight upon polymer properties are discussed.
E. M. Fettes, J. S. Jorczak
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Abstract The chemistry of the condensation polymerization is reviewed briefly. The structures of the polymeric products as well as the effects of copolymerization, cross-linking, end groups, and molecular weight upon polymer properties are discussed.
E. M. Fettes, J. S. Jorczak
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Polysulfide Coordination Clusters of the Lanthanides
Angewandte Chemie International Edition, 2017AbstractThe reaction of [(DippForm)2Ln(thf)2] with an excess of elemental sulfur in toluene resulted in the formation of the trinuclear polysulfide coordination clusters [(DippForm)3Ln3S12] (Ln=Sm, Yb; DippForm=N,N′‐bis(2,6‐diisopropylphenyl)formamidinate).
Ying‐Zhao Ma +4 more
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1977
Disulfides and polysulfides have the structure R1SSnR2, in which chains of sulfur atoms are terminated by two groups that may be the same, different, or connected in a ring. Chapter 7 considers only substances where the S-R bond involves a carbon linkage; a review is available of structures such as ROSnOR and R2NSnNR2) Disulfides (n = 1) and their ...
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Disulfides and polysulfides have the structure R1SSnR2, in which chains of sulfur atoms are terminated by two groups that may be the same, different, or connected in a ring. Chapter 7 considers only substances where the S-R bond involves a carbon linkage; a review is available of structures such as ROSnOR and R2NSnNR2) Disulfides (n = 1) and their ...
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Polysulfide utilization by Thiocapsa roseopersicina
Archives of Microbiology, 1990The purple sulfur bacterium Thiocapsa roseopersicina, being the dominant anoxygenic phototroph in microbial mats, was tested for growth on polysulfide as the electron donor for carbon dioxide fixation. Data collected in continuous cultures revealed μmax to be 0.065 h-1 and the saturation affinity constant K s to be 6.7 μM.
VISSCHER, PT +2 more
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Cyclic polysulfides fused to polyaromatics
Tetrahedron, 2007AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ashraful Alam +3 more
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1976
The paper deals briefly with the chemistry and formulation of polysulfide liquid polymers. It is primarily concerned with areas of application and performance of compounds based on the various liquid polymers. Criteria for the use of polysulfide sealants in the aircraft, automotive, building, and marine industries are given along with some case ...
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The paper deals briefly with the chemistry and formulation of polysulfide liquid polymers. It is primarily concerned with areas of application and performance of compounds based on the various liquid polymers. Criteria for the use of polysulfide sealants in the aircraft, automotive, building, and marine industries are given along with some case ...
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Unusual Thermolysis of Diisobutyl Polysulfides.
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
N. A. Korchevina +2 more
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Disulfide interchange in polysulfide polymers
Journal of Polymer Science, 1956AbstractA study has been made on the effect of thiols and disulfides on lowering the molecular weight of polysulfide polymers. It was shown that in the presence of aqueous sodium disulfide there is an interchange of chain segments. This effect is observable if a simple organic disulfide is present in the system, resulting in a lower molecular weight ...
E. R. Bertozzi +2 more
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Hydrogen Sulfide and Polysulfide Signaling
Antioxidants & Redox Signaling, 2017Hydrogen sulfide (H2S) has been demonstrated to have physiological roles such as neuromodulation, vascular tone regulation, cytoprotection, oxygen sensing, inflammatory regulation, and cell growth. Recently, hydrogen polysulfides (H2Sn) have been found to be produced by 3-mercaptopyruvate sulfurtransferase and to regulate the activity of ion channels ...
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