POLYSILOXANE COMPRISING SUBSTITUENTS HAVING MULTIPLE ARYL GROUPS

A polysiloxane comprising: (a) from 40 to 90 mole% units of formula R1R2SiO2/2, (b) from 10 to 60 mole% units of formula R3SiO3/2, and (c) from 0 to 5 mole% units of formula R1R4SiO2/2; wherein R1 and R2 independently are phenyl or C1-C6 alkyl; R3 represents at least one C1-C30 hydrocarbyl group; R4...

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Bibliographische Detailangaben
Hauptverfasser:	SWIER, Steven, HORSTMAN, John B
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A polysiloxane comprising: (a) from 40 to 90 mole% units of formula R1R2SiO2/2, (b) from 10 to 60 mole% units of formula R3SiO3/2, and (c) from 0 to 5 mole% units of formula R1R4SiO2/2; wherein R1 and R2 independently are phenyl or C1-C6 alkyl; R3 represents at least one C1-C30 hydrocarbyl group; R4 is -Ar1-X-Ar2, where Ar1 and Ar2 independently are C6-C12 aryl and X is O or CH2; provided that the polysiloxane comprises at least one -Ar1-X-Ar2 group. L'invention concerne un polysiloxane comprenant : (a) de 40 à 90 % en moles de motifs de formule R1R2SiO2/2, (b) de 10 à 60 % en moles de motifs de formule R3SiO3/2, et (c) de 0 à 5 % en moles de motifs de formule R1R4SiO2/2 ; R1 et R2 étant d'une manière indépendante des groupes phényle ou alkyle en C1-C6 ; R3 représentant au moins un groupe hydrocarbyle en C1-C30 ; R4 étant -Ar1-X-Ar2, Ar1 et Ar2 étant d'une manière indépendante des groupes aryle en 6-C12 et X étant O ou CH2 ; à la condition que le polysiloxane comprenne au moins un groupe -Ar1-X-Ar2.