Coumarone resin

Because of their wide compatibility and solubility, coumarone resins are used considerably in the paint and varnish industry. The resins also find application as softeners for plastics and rubbers such as PVC, bitumens and natural rubber. 

Soon after World War II the hard thermoplastic floor tile was developed. These tiles use coumarone resins as a binder for the other ingredients, which may contain fibrous fillers such as asbestos, inert fillers such as china clay and softeners such as paraffin wax. 

Volodchenko VA. 1968. [Skin damaging and resorptive effect of mastics made from epoxide and coumaron resins.] Vrach Delo 9 95-97. (Russian)... 

Benzo[6 ]furan (2), usually called simply benzofuran, was first prepared by Perkin, who obtained it from coumarin as in Scheme 2 and (not understanding its constitution) called it coumarone, an unsuitable name that still survives in the term coumarone resin , for the compound is now valued for copolymerization purposes. Later the compound was isolated by distillation of bituminous coal, which is also a source of several methyl and hydroxy derivatives and of dibenzofuran (the name diphenylene oxide is now discarded) <75AHC(18)337>. 

Resin as the Disperse Phase. Several kinds of resins (10) have been used to reinforce rubbers—e.g., phenolic or coumarone resins for natural rubber, styrene-butadiene resin for styrene-butadiene rubber, etc. One other important system, pressure-sensitive adhesive, also belongs to this class. These adhesives generally contain a low molecular weight resin functioning as a tackifier. In 1957, Wetzel (68) and Hock (19) found that these adhesives were actually two-phase systems (Figure 1). Under... 

Extraction has been achieved by azeotropic distillation of the benzofuran-indene mixture with diethylene glycol/ through refining with acetonitrile. Industrially, benzofuran in the gases from coke manufacture or from the crude distilled benzene fractions is separated (or eliminated) through refining with sulfuric acid, with formation of coumarone resins or cumar. ... 

Coumarone resins have been the subject of patents, notably for use in building materials and as protectives in paints and varnishes. Coumarone-indene (copolymer) resins are also much used added to rubber, they influence the vulcanizing rate and improve the strength properties of some synthetic rubbers. Coumaronic derivatives are used for bleaching in the textile industry and as inhibitors in the sulfochlorination of Kogasin. ... 

Use Coumarone resins solvent for asphalts, road tars, pitches, etc. cleansing compositions process engraving and lithography rubber cements (solvent) naphtha soaps manufacture of ethylene and acetic acid. 

Various kinds like coumarone resins, petroleum resins, high styrene resins and phenolic resins are used to give excellent flow characteristics during moulding, calendering and extruding. 

Benzo[Z ]furan, a colourless, oily, water-insoluble liquid, bp 173°C, occurs in coal tar. It is probably formed during coal carbonization by cyclodehydration of 2-ethylphenol. Copolymerization of indene in the presence of Bronsted or Lewis acids yields the so-called coumarone resins, which find use in industry (adhesives, paints, binders). 

Synonyms Coumarone/indene copolymer Coumarone resin Indene/ coumarone resin Poly (coumarone-co-indene) Polyindene resin Classification Thermosetting resin... 

Indene/coumarone resin. See Coumarone/indene resin... 

Coumarin, 3(3-(4-biphenylyl)-1,2,3,4-tetrahydro-1-naphthyl)-4-hydroxy-. See Difenacoum, Coumarin, 7-diethylamino-4-methyl-. See 7-Diethylamino-4-methyl coumarin Coumarin, 7-hydroxy. See 7-Hydroxycoumarin Coumarin, 4-hydroxy-3-(1,2,3,4-tetrahydro-1-naphthyl)-. See Coumatetralyl cis-o-Coumarinic acid lactone Coumarinic anhydride. See Coumarin Coumarone. SeeCumarone Coumarone/indene copolymer. See Coumarone/indene resin Coumarone/indene resin CAS 35343-70-5 63393-89-5 Synonyms Coumarone/indene copolymer Coumarone resin Indene/coumarone resin Poly (coumarone-co-indene) Polyindene resin Classification Thermosetting resin Properties Brn. solid soft and sticky at R.T. hardens on heating to solid sol. in hydrocarbon soivs., pyridine, acetone, carbon disulfide, CCU insol. in water, alcohol dens. 1.140 soften, pt. 

IH-Indene. Seeindene Indene/coumarone resin. See Coumarone/indene resin 1 H-lndene-1,3(2H)-dione, 2-(2-quinolinyl)-, sulfonated, sodium salts. See Cl 47005 Acid yellow 3... 

Indan can be recovered by distillation of the heavy gasoline from coal tar refining. Indene, which is present in pyrolysis gasoline and in coal tar heavy gasoline, is of particular technical importance. It is polymerized with coumarone and other olefins to produce indene/coumarone resins. 

Indene/coumarone resins find extensive application, especially in the production of adhesives, as reinforcers and tackifiers in the production of commerical rubber products, and in paint manufacture. Production of indene-derived resins in Western Europe is around 110,000 tpa. 

Coumarone (2,3-benzofuran, cumarone) n. C8H60. Bicyclic ring compound. Parent substance for the coumarone resins. Properties colorless liquid, aromatic odor Sp gr of 1.078 mp of —18°C (—0.4°F) p of 177°C (351°F) insoluble in water soluble in alcohol and ether derived from the coal tar naphtha fraction boiling between 150 and 200°C (302-392°F), and having the structure as shown in the image. Syn ben-zofuran and cumarone. 

Coumarone resins n. Any of the group of thermosetting resins derived by the polymerization of mixtures of coumarone and indene. 

Diethyl phthalate (ethyl phthalate) n. A plasticizer and solvent for nearly all thermoplastics and coumarone resins. It has been approved by FDA for use in food packaging. 

Terpene resins n. Neutral hydrocarbon resins made by polymerization of j6-pinene. They possess all the advantages of coumarone resins, e.g., neutrality, resistance to alkalis, etc., without the disadvantages of yellowing. They have excellent compatibility. 

The Desmocoll polymers show compatibility with some or all of the following polymers to the extent that they give clear solutions and films phthalic resins, xylene-formaldehyde resin, cyclohexanone-formaldehyde resin, highly chlorinated terphenyl, terpene-phenolic resin, acetyl cellulose, nitrocellulose, nitrile rubber, chlorinated PVC, vinyl chloride-vinyl acetate copolymer, rosin esters and coumarone resin. 

These resins are generally grouped into three main categories depending on the source of the raw material (1,203,204). The indene-coumarone resins are coal tar based. Aliphatic, aromatic, and dicyclopentadiene resins are made from distillate fractions of cracked petroleum. Polyterpene resins are produced using monomers isolated from turpentine oil (a- or jS-pinene) or etheral oils of lemon, orange, mandarin, or caraway (d,Z-limonene or dipentene and d-limonene). 

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