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CYCLIC SILOXANE [1 record]
Record 1 - internal organization data 2002-01-15
Record 1, English
Record 1, Subject field(s)
- Chemical Elements and Compounds
Record 1, Main entry term, English
- cyclic siloxane
1, record 1, English, cyclic%20siloxane
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The thermal degradation behavior of silicone oil\slash aromatic polyamide insulation system was studied. It was found that the flash and fire points decreased due to the formation of low molecular weight by-products of such cyclic siloxane oligomers as D\sub3, D\sub4 and D\sub5. 2, record 1, English, - cyclic%20siloxane
Record number: 1, Textual support number: 1 CONT
After distillation, the dimethyldechlorosilanes are hydrolyzed to form silanols which rapidly condense to cyclic siloxanes and low molecular weight linear siloxanes. The latter are reacted with caustic to produce cyclic siloxanes, specifically dimethyl tetramer or D4 which is the primary input for all dimethyl silicone rubber polymer and which is a clear, low viscosity liquid. Ring opening polymerization of the cyclic D4 is then accomplished via strong base resulting in linear polymer whose molecular weight (viscosity) is controlled by the addition of monofunctional siloxanes which function as chain stoppers. 3, record 1, English, - cyclic%20siloxane
Record 1, French
Record 1, Domaine(s)
- Éléments et composés chimiques
Record 1, Main entry term, French
- siloxane cyclique
1, record 1, French, siloxane%20cyclique
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le caractère hybride des matériaux est sans ambiguité mis en évidence par l'existence des vibrations caractéristiques de la liaison Si-C. La partie purement minérale est caractérisée par les vibrations de valence symétriques du pont Si-O-Si situées à 1115 cm-1(espèces siloxanes cycliques) et 1070 cm-1(espèces siloxanes linéaires). 2, record 1, French, - siloxane%20cyclique
Record number: 1, Textual support number: 1 OBS
siloxane (n.m.) : Produit de condensation avec perte d'eau des silanols. 3, record 1, French, - siloxane%20cyclique
Record 1, Spanish
Record 1, Textual support, Spanish
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