Synthetic resins classification

A somewhat crude though convenient classification can be made on the basis of the principal ingredients, thus. (1) Portland cement, (2> high alumina cemenl. (3) sodium silicate. (4 magnesium oxychloride plus copper powder, (5) litharge or red lead plus glycerol. (6) rubber latex, and (7) synthetic resins. Supplementary materials to be considered are asbestos, white lead, plaster of Paris, sulfur, graphile, sand, pilch, tar, rosin, and boiled linseed oil. 

The polymer concretes are distinguished by the nature of the binder e.g., furan, polyester, epoxy, phenol formaldehyde, carbamide, and so on. The classification of the main types of polymer concrete according to the kind of synthetic resins involved is shown in Figure 1.2 [7],... 

The Artificial Muscle Project draws people from a variety of disciplines. Indeed, the field of electroactivity is extremely interdisciplinary. Case in point for my first patent in this area, the examiner from the USPTO called me. Evidently, they had several meetings trying to decide which patent classification code it came under—chemistry or electrical engineering So they resolved the matter by putting the question to me. We chatted and I agreed that it was on the fence between the two areas, but since my background was stronger in chemistry, the main classification was placed in class 523/113, synthetic resins, subclass composition suitable for use as tissue or body member replacement, restorative, or implant. 

POLYAMIDE RESINS. These are synthetic polymers that contain an amide group, —CONH-. as a recurring part of the chain. Poly-alpha-aminoacids, i.e., proteins, whether natural or synthetic, are not normally included in this classification. 

In a first classification, we can distinguish (i) boards made with an external synthetic binder, such as urea-formaldehyde or phenol-formaldehyde resins for thermosets, and (ii) boards with internal natural binders. The products cited below do not constitute an exhaustive list. 

The broadest classification for plastics is the old thermoplastic and thermosetting . Examples of the former group are polyethylene, polystyrene, and poly-(methyl methacrylate) examples of the latter are urea-formaldehyde condensation polymers, powder coatings based on polyesters, epoxy resins, and vulcanized synthetic elastomers. 

Synonyms Benzene, ethenyi-, polymer with 1,3-butadiene B/S Butadi-ene/styrene copolymer 1,3-Butadiene/styrene copolymer Butadiene/ styrene polymer 1,3-Butadiene/styrene polymer Butadiene/styrene resin 1,3-Butadiene/styrene resin Butadiene/styrene rubber Ethenylbenzene polymer with 1,3-butadiene Polybutadiene/polysty-rene copolymer Poly (styrene-co-butadiene) S/B SBR Styrene/butadiene Styrene/butadiene copolymer Styrene/1,3-butadiene copolymer Styrene polymer with 1,3 butadiene Classification Polymer synthetic rubber Formula pCH2CH(C6H5)],(CH2CH=CHCH2),... 

We will conform to Carothers classification in the sections devoted to the preparation of synthetic polymers. However, when considering the application of polymers it is more useful to consider the following three categories (1) plastics, which include thermosetting resins, such as urea resins, polyesters, or epoxies, and thermoplastic resins, such as poly-... 

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