Polymers, indene

Indene polymer can be identified from IR spectra and the indene picrate which melts at 98° a pink color is imparted to a CC14 soln of the indene polymer by SbCls (Ref 6)... 

Besides its usage in foods, indene polymer is used in the coatings industry, inks, floorings and in rubber applications. Some use has been made of the nitrated polymer as an ingredient in fuze powder (substituting for charcoal), but because of the sensy to impact this use is discontinued (Ref 3)... 

D. Hart, "Investigation of the Use of Nitro-indene Polymer in Powder for M54 Time Fuze PATR 1525 (May 1945)... 

Initiation by protonic acids is relatively inexpensive. The major applications of such processes are for reactions of simple olefins like propylene or butenes or olefinic derivatives of aromatics such as coumarone (9-15) and indene (9-16). The products of these reactions have very low molecular weights because of transfer reactions which are discussed below (Section 9.4.4). The low polymers of olelins are used as lubricants and fuels while the coumarone-indene polymers are employed in coatings and as softeners for rubbers and bitumens. 

Indene Polymers. Since the commercial resins contain a high content of indene, a commercial coumarone indene resin, Piccoumaron 450-L,... 

Flooring. Indene polymers were the first resins used in asbestos filled floor tile, and they continue to be used although they have been extended by petroleum resins and reinforced with polystyrene. The tile binder consists of 70% indene resin and 30% mineral oil plus a gelled oil. The filler is a mixture of limestone and asbestos. Aromatic oils give soft sticky mixes, paraffinic oils gave dry, crumbly mixes, and neither made satisfactory tiles. 

Resins with solubility close to that of rubber (I, 14), the terpene, and olefin polymers have a softening effect on rubber. Indene polymers... 

Plastics of less dermatological importance are cou-marone-indene polymers, cellulose polymers and cyclohexanone resins. It is not entirely known if the monomers, additives or impurities are the cause of dermatitis in the reported cases (Bruze et al. 1988 Heine and Laubstein 1990). 

Coumarone-indene polymers are chemically inert and are used as binders in cheaper grades of floor tiles. They are also used as additives in various surface coating formulations. 

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