Polydimethylsiloxane containing branch chains as well as preparation method and application thereof

The invention provides polydimethylsiloxane containing branch chains and a preparation method and application thereof. The preparation method comprises the following steps: 1) dropwise adding dimethyl vinyl ethyoxyl silane into methyl trichlorosilane for reaction and removing ethylene chlorohydrin a...

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Bibliographische Detailangaben
Hauptverfasser:	HU GUOXIN, HUANG YONGJUN, YIN BANGZHI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAUNDERING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS SEMICONDUCTOR DEVICES TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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Beschreibung
Zusammenfassung:	The invention provides polydimethylsiloxane containing branch chains and a preparation method and application thereof. The preparation method comprises the following steps: 1) dropwise adding dimethyl vinyl ethyoxyl silane into methyl trichlorosilane for reaction and removing ethylene chlorohydrin after reaction to obtain an intermediate product; 2) carrying out polymerization reaction on the intermediate product and octamethylcyclotetrasiloxane under the action of a catalyst; and 3) firstly decomposing the catalyst and then removing low molecular substances from the product after reaction to obtain the polydimethylsiloxane containing branch chains, wherein the molecular formula of the polydimethylsiloxane containing branch chains is [CH2=CH(CH3)2SiO1/2]a[(CH3)2SiO]b[CH3SiO3/2]c, in which a, b and c which are integers are greater than zero; a=c+2, and a/b is less than 2%. The polydimethylsiloxane containing branch chains has excellent physical and mechanical properties, the flexibility of the polydimethylsiloxane is remarkably improved, the surface of the polydimethylsiloxane is not sticky, and the preparation method is simple and convenient to operate.