Olin polymers

Figure 2 Schematic representations of the Olin polymers 2 (with —P—O—P— linkages), 3 and 4 (DEXSIL carborane polymers), and 5 (carborane polymers with tin bridges). (Adapted from ref. 7.)...

Inks. Refined kaolin is a common ingredient in a large variety of printing inks (qv). In addition to extending the more expensive polymers present, ka olin also contributes to improved color strength, limits the penetration of the ink into the paper, controls rheology, and improves adhesion. Kaolin for this appHcation must usually be as white as possible and free from oversize particles. Surface treated clays are used to improve compatibiHty with oil-based ink. Clays can also be an ingredient in the newer water-based or uv-cured inks. 

Substantial improvements in the heat-resisting capability of silicone rubbers were achieved with the appearance of the poly(carborane siloxanes). First described in 1966, they were introduced commercially by the Olin Corporation in 1971 as Dexsil. The polymers have the essential structure... 

In Olin s attempts to derivatize dilithiated products of o-carborane with chlorosilanes for further reaction with ammonia, it was observed that cyclic compounds, instead of polymers, were produced by the interaction of the substituents on the adjacent carbon atoms in the o-carborane units.11 However, when a linear dimethoxy intermediate of m-carborane was reacted as an equimolar mixture with dichlorosilane in the presence of the catalyst FeCl3, the quantitative evolution of CH3C1 was observed... 

While the Olin efforts on the production of high-temperature polymers were centered mainly on FeCl3-catalyzed condensation reactions, subsequent efforts from Union Carbide, Inc. utilized an aminosilane route and a ureidosilane route (Fig. 3) to synthesize carboranylenesiloxane polymers of high molecular weights. Using the former route, the polymer was produced by a condensation reaction between a carborane-disilanol and bis(dimethylamino)dimethylsilane, during which an expulsion of a... 

Another relatively nonpolar liquid, but one with a very high temperature limit, is a carborane silicone polymer called Dexsil, first synthesized by Olin Chemical in 1964 and now manufactured by Analabs and by a company bearing the Dexsil name. Its structure is shown in Figure 8.16. Three polymers are available that differ in the substitution on the methyl silicone backbone in a way similar to the silicones discussed above Dexsil 300 is dimethyl silicone, as shown in the figure Dexsil 400 is the methyl-phenyl analog and Dexsil 410 is the methyl-cyanopropyl analog. The temperature range over which they can be used is approximately 50 to 400°C. 

Olin Corporation s product portfolio also went full circle, but it differed from Grace in that Olin transitioned out of chemicals only to later reenter. Olin was one of the very few explosive companies that did not join Du Pont in 1903-1904 to form the B. 1. du Pont de Nemours Powder Company (see Chapter 3). Unlike Du Pont, it remained a producer of explosives and ammunition, buying in the 1930s Winchester Firearms Company (at much the same time that Du Pont obtained Remington Arms). Olin did not participate in the polymer revolution. But in 1947 Du Pont, to satisfy the government s antitrust division, granted Olin the licenses and technologies to produce cellophane. ... 

Poly-Tergent . [Olin] Alkoxylated linear alcohol or EO/PO block polymers surfactant wetting agent defoamer, emulsifier, dedusting dispersant for household and industrial detergents. 

UraUoy Hybrid Polymer. [Olin] Pdy-uiethane polymer in styrene monomer used in fiber-reinforced unsat. polyester composites. 

Promising positive-tone bilayer resists based on silicon-containing methacrylate polymers bearing acid labile side groups (Scheme 7.49), and designed for ArF lithography, were reported in 1996 by researchers at Olin Ceiba-Geigy... 

Manuf/Distrib. Aastrid Inti Aldrich Allchem Ind. Arch Chems. BCH Bruhl Boith China Brown Burlington Chem. Celanese Clariant Cognis/Coatings Inks Coyne Dastech Inti FMC Foret Farleyway Chems. Ltd Fluka ICC Ind. Independent Chem. Inti Chem. Inc LaRoche Ind. Monomer-Polymer Dajac Labs Morton Inti Nissan Chem. Ind. Olin/Chlor Alkali PPG Ind. Parchem Trading Robeco Schaefer Tech. Sigma Spectrum Quality Prods. Stanchem Sumitomo Chem. Vulcan Perf. Chems. Whyte Chems. Ltd... 

A series of carborane silicone polymers (see Fig. 4.8) has been designed especially for high temperature work. They were first synthesized in 1964 by Olin Chemical and are sold under the trade name Dexsil. Dexsil 300 is the least polar, having all methyl groups in the chain. It can be used up to 400°C. 

FUNGO, F, SAMSON, A. JENEKHE, BARD, A., Plastic electrochromic devices electrochemical characterization and device properties of aphenothiazine-phenylquin-oline donor acceptor-polymer, J. Chem. Mater., 2003,15,1264-72. 

Fused deposition modeling (FDM) is an additive solid-based process as shown in Figure 15.6. A solid thermoplastic polymer is heated to the melting temperature and deposited through a nozzle in narrow strips in the y-direction. The nozzle is moved in the x-direction as subsequent strips are laid down (or the platform can be moved in the -X direction). The thickness t of each layer can be as small as 0.(X)4 in. (0.10 mm) and the width as small as O.Olin. (0.25 mm). The jc, y motion of the process for each layer is similar to that of an inkjet printer and thus the extension of this to RP is also known as 3D printing. 

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