Fluorosilicone

Anti-foaming agents polydimethylsiloxanes, fluorosilicones, acrylates. [Pg.279]

FLUORINECOMPOUNDS,ORGANIC - POLY(FLUOROSILICONES)] (Volll) Cyclotriveratrylene [1180-60-5]... [Pg.274]

Preparation of other fluorosilicone monomers follows methods similar to that described above. For example, 2,4,6-trimethyl-2,4,6-tris(3,3,4,4,5,5,6,6,6-nona- uorohexyl)cyclotrisiloxane [38521-58-3] is produced from 3,3,4,4,5,5,6,6,6-nona-fluorohexene [19430-93 ] and methyldichlorosilane in three steps (3). [Pg.400]

Silicone—Fluorosilicone Lenses. Sdicone mbber has long been considered a unique contact lens material (55), and the development of sdicone mbber lenses has been reviewed in earHer editions of the Eniyclopedia. The oxygen permeabdity of sdicone mbber, >300 barrers, is virtually unsurpassed by any other polymeric material considered for contact lens appHcations. [Pg.105]

Ethylene-vinyl acetate mbbers (EAM)—this chapter Ethylene-acrylate mbbers (AEM)—this chapter Fluorombbers (FKM, CFM, FFKM, FZ, AFMU etc.)—Chapter 13 Silicone and fluorosilicone mbbers (MQ, VMQ, PMQ, PVMQ and FVMQ)— Chapter 29... [Pg.309]

Fluorosilicones LS53 etc. Dow Coming Good strength at elevated temperatures... [Pg.381]

Whilst exhibiting the excellent low-temperature flexibility (with a Tg of about -80°C) and very good heat resistance (up to 200°C) typical of a silicone rubber, the fluorosilicones also exhibit good aliphatic oil resistance and excellent aging resistance. However, for some applications they have recently encountered a challenge from the polyphosphazenes (see Section 13.10). [Pg.833]

FVMQ Silicone rubbers having fluoro and methyl substituent groups on the polymer chain (the fluorosilicones)... [Pg.834]

Silicone rubbers find use because of their excellent thermal and electrical properties, their physiological inertness and their low compression set. Use is, however, restricted because of their poor hydrocarbon oil and solvent resistance (excepting the fluorosilicones), the low vulcanisate strength and the somewhat high cost. [Pg.838]

Auto uses are said to account for about one-third of the 30000 tonnes of silicone rubber consumed annually around the world (in turn about 10% of total silicone consumption). Specific uses include shaft sealing rings, spark plug caps, O-rings (the major market for the fluorosilicones), gaskets, coolant and heater hoses for buses and trucks, and ignition cables. [Pg.839]

One of the important breakthroughs in the silicone PSA industry has been the development of new release liners based on fluorosilicones [116]. These new materials significantly improve the release characteristics of the silicone PSAs, something that has been difficult to achieve because of the high adhesion silicone PSAs show to low energy substrates, including silicone rubbers and liners. [Pg.509]

Fluorosilicones consist of PDMS backbones with some degree of fluoro-aliphatic side chains. The fluorinated group can be trifluoropropyl, nonafluorohexylmethyl, or fluorinated ether side group [78,28,79]. These polymers differ not only in substituent group, but also in the amount of fluoro-substitution relative to PDMS, the overall molecular weight and crosslink density, and the amount of branching. In most commercially available cases, these polymers are addition cure systems and the reactions are those discussed previously for silicone networks. [Pg.550]

Chemical or medium Percent volume change Fluorosilicone Silicone mbber rubber (FVMQ) (VMQ) ... [Pg.183]

Chemical resistance Fluorosilicone Seals, gaskets, hose linings for liquid fuels... [Pg.119]

The submitters used a 2.1 m. x 0.64 cm. column with 5% fluorosilicone (FS-1265) supported on Diatoport S as stationary phase. With a column temperature of 170° and a helium flow rate of 60 ml. per minute, 2-ethoxypyrrolin-5-one has a retention time of 2.2 minutes. The analysis was carried out at 160° by the checkers, using a column of 5% diethylene glycol succinate-Bentone supported on Diatoport S. The starting material had a retention time of 3.9 minutes under these conditions. Bentone is available from Applied Sciences Laboratory, Box 440, State College, Pennsylvania 16801. [Pg.204]

Based on the extensive work, Ghosh and De have concluded that fluoroelastomer and silicone mbber form technologically compatible blends of micro-heterogeneous stmcture with thermal stability between those for the blend components. The blend could be used as a replacement for fluorosilicone mbber. [Pg.308]

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