Chlorinated rubber solubility

Chlorinated rubber is soluble in aromatic solvents, and paints made from it dry by solvent evaporation alone. In contrast to the vinyls, there is less difficulty in formulating systems that are suitable for brush application. It has excellent resistance to a wide range of chemicals and to water, but as it is extremely brittle it needs to be plasticised. To preserve chemical resistance it is necessary to use inert plasticisers such as chlorinated paraffin wax. Due to the presence of ozone depleting solvents, chlorinated rubber coatings are being phased out and largely replaced by vinyl acrylic coatings which have very similar performance and can be formulated from lower aromatic or aliphatic solvents. 

Properties Colorless liquid. D 1.3888 (20/4C), fp -15C, bp 156.17C, refr index 1.4822 (20C), flash p 180F (82.2C) (COC). Slightly soluble in water dissolves oils, fats, waxes, chlorinated rubber, and numerous resins, autoign temp580F (304C). Combustible. 

Beilstein Handbook Reference) AI3-00515 BRN 1889288 CCRIS 6190 DCHP Dicyclohexyl 1,2-benzenedicarboxylate Dicyclohexyl phthalate EINECS 201-545-9 Ergoplast FDC HF 191 Howflex CP HSDB 5246 KP 201 NSC 6101 Phthalic acid, dicyclohexyl ester Unimoll 66. A plasticizer for nitrocellulose, ethylcellulose, chlorinated rubber, PVAc, PVC, and other polymers. Used in formulation of delayed tack heat sealable coatings, it Is a heat activated plasticizer for heat seal applications such as food wrappers/labels, pharmaceutical labels and other applications where delayed heat activated adhesive is required used in manufacture of printing ink formulations for paper, vinyl, textiles, and other substrates. Solid mp = 66° d = 1.383 insoluble in H2O, soluble in EtOH, Et20, CHCI3, Bayer AG Lancaster Synthesis Co. Miles Inc. Morflex Unitex. 

Tetrahydro-2-furanylmethanol Tetrahydro-2-furfuryl alcohol Tetra-hydro-2-furylmethanol Tetrahydrofurfuryl alcohol Tetra-hydrofurfurylalkohol Tetrahydrofuryl carbinol Tetra-hydrofurylalkohol THFA. Solvent for vinyl resins, dyes for leather, chlorinated rubber, cellulose esters, coupling agent, solvent-softener for nylon. Liquid mp <-80° bp = 178° d n 1.0524 miscible with H2O, freely soluble in EtOH, MezCO. Lancaster Synthesis Co, Penta Mfg. QO. 

FIGURE 1.33 Limiting solubility boundary for chlorinated rubber. The solid circle represents the probable solubility parameter of the resin. (After Teas, 1. P. 1968. /. Paint TedinoL, 40, 519.)... 

Dichloromethane [75-09-2] (methylene chloride) is a colorless, highly volatile, neutral liquid with a characteristic odor. It is insoluble in water but miscible with organic solvents. It has a very good solvency for many organic substances, such as fats, oils, waxes, and resins. Bitumen, rubber, chlorinated rubber, polystyrene, postchlorinated poly(vinyl chloride), vinyl chloride copolymers, polyacrylates, and cellulose esters are also soluble. The solubility spectrum can be expanded by adding other solvents. A mixture of methanol or ethanol and dichloromethane is a good solvent for cellulose ethers and acetyl cellulose. Cellulose nitrate is, however, insoluble. 

Diacetone alcohol [123-42-2] (4-hydroxy-4-methyl-2-pentanone) is an almost odorless ketone alcohol that is weakly acidic as a result of rearrangement to the enol form. It is miscible with water and organic solvents except aliphatic hydrocarbons. It acts as a good solvent for cellulose esters and ethers, alcohol-soluble resins, castor oil, and plasticizers. Poly(vinyl acetate) and chlorinated rubber are partially dissolved or swollen. Polystyrene, poly(vinyl chloride), vinyl chloride copolymers, dam-ar resins, resin esters, rubber, bitumen, mineral oils, ketone resins, and maleate resins are insoluble. Diacetone alcohol is used as a high boiler in stoving enamels to improve flow and gloss. 

Butyl formate [592-84-7] is slightly soluble in water. It dissolves cellulose nitrate, fats, oils, many polymers, and chlorinated rubber. It does not, however, dissolve cellulose acetate. 

Isobutyl acetate [110-19-0] is a colorless, neutral liquid with a pleasant, fruity odor. It is miscible with organic solvents, but immiscible with water. Isobutyl acetate has a high solvency for cellulose nitrate, colophony, damar resin, ketone and ketone-formaldehyde resins, maleate resins, urea and melamine resins, and phenolic and alkyd resins. Polymers such as polystyrene, poly(vinyl ethers), poly(vinyl acetate), polyacrylates, chlorinated rubber and vinyl chloride copolymers, as well as fats, greases, and oils are readily dissolved. Postchlorinated poly(vinyl chloride) is less soluble. Polyisobutene, cellulose ethers, polymethacrylates, poly(vinyl butyrals), natural rubber, and manila copal are swollen. Shellac, cellulose acetate, cellulose acetobutyrate, poly(vinyl chloride), and poly(vinyl formal) are insoluble. 

Ethyl triglycol [112-50-5] [2-(2-ethoxyethoxy)ethoxy]ethanol, triethylene glycol monoethyl ether] is an almost colorless, neutral, mild-smelling liquid with a low hygroscopicity. It is soluble in water and most organic solvents, but is only partially miscible with aromatic and aliphatic hydrocarbons. Ethyl triglycol dissolves cellulose nitrate, shellac, colophony, ketone resins, maleate resins, chlorinated rubber, alkyd resins, and many other paint resins. It does not dissolve cellulose acetate, poly(vinyl chloride), vinyl chloride copolymers, fats, oils, and rubber. 

N.N-Dimethylformamide [68-12-2] (DMF) [14.276] is miscible with water and organic solvents except aliphatic hydrocarbons. It is a good high-boiling solvent for cellulose esters, cellulose ethers, poly(vinyl chloride), vinyl chloride copolymers, poly(vinyl acetate), polyacrylonitrile, polystyrene, chlorinated rubber, polyacrylates, ketone resins, and phenolic resins. Alkyd resins and resin esters are partially soluble. Dimethylformamide does not dissolve polyethylene, polypropylene, urea-formaldehyde resins, rubber, and polyamides. It is used as a solvent in printing inks, for polyacrylonitrile spinning solutions [14.277], and as a solvent in the synthesis of acetylene. 

Bolling point/C 408 Melting point/C 78 Relative density (water 1) 2.2 Solubility in water, g/100 ml at 15 ° C 5.6 Relative molecular mass 315.5 Gross formula BaH202.8H20 COLORLESS CRYSTALS OR WHITE POWDER Decomposes when heated, giving off toxic and corrosive vapors. Strong base which reacts violently with acids and corrodes aluminum, zinc etc. Reacts violently with chlorine rubber (when heated), with risk of fire and explosion. ... 

What is a lacquer It is a finish, clear or pigmented, which consists primarily of a hard linear polymer in solution. It dries by simple evaporation of solvents (lacquer dry). It is thus possible to make a lacquer from any soluble linear polymer, such as chlorinated rubber,... 

The most common resins used are vinyls, chlorinated rubber, acrylics, epoxies, urethanes, polyester, autooxidative cross-linking coatings, and water soluble resins. 

FIGURE A3.7 Solubility of chlorinated rubber. Source Parker (1967). 

Chlorinated Rubber (rubber chloride) (1) Natural rubber in which about two-thirds of the hydrogen atoms have been replaced by chlorine atoms. The resin is formed by the reaction of rubber with chlorine at about 100° C in an inert solvent or as a latex. UnHke rubber, the resulting product is readily soluble and yields solutions of low viscosity. It is sold as white powder, fibers, or as blocks. Commercial products generally contain about 65% chlorine. It has good chemical resistance properties, however, it tends to cobweb when sprayed. Now mostly chlorinated polymers are used, as 1-butene, polyethylene, etc. It has adhesive properties and, because of its good fire resistance, is used in paints. (2) Chlorinated natural rubber. Manufactured by Bayer, Germany. 

Two derivatives of NR that have been produced for many years are cyclized rubber and chlorinated rubber. The first of these may be produced in solution by heating with a strong acid such as H2SnCl6. The structure that results resembles a ladder to some extent (Section 12.3). It is still quite soluble and finds use in adhesives and coatings. Chlorinated rubber (structure shown below) also is ladderhke. The product with about 65% chlorine has been used as a coating for many years. 

Water-soluble selenium compounds are poured down the sink in the hood and flushed with much water. Rubber stoppers and gloves can be freed from toxic compounds by soaking them for a few minutes in bromine or chlorine water and then in dilute sodium hydroxide solution. 

Organic solvents are used to make the rubber dough. Natural rubbers are soluble in rubber solvent (a specific petroleum fraction) or naphtha. Nitrile and polychloroprene compounds require aromatic or chlorinated hydrocarbons as solvents. Often mixtures of solvents are used. 

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