Resin glyptal

Polyesters from polybasic acids and polyhydric alcohols. Alkyd resins. The condensation of polyhydric alcohols and polybasic acids or anhydrides leads to polj esters known as alkyd resins. The most common member of the group is a glycerol - phthahc acid polymer, and this has led to the term glyptal resins being frequently apphed to the whole group. 

Glycolyzed PET waste, polyester polyols from, 559-560 Glyptal resins, 18... 

Glycerin, glycerol. A thick, syrupy, sweetish liquid used as a plasticiser, a mould lubricant and as a raw material for the manufacture of glyptal resins. 

Uses Solvent in nitrocellulose coatings, vinyl films and Glyptal resins paint removers cements and adhesives organic synthesis manufacture of smokeless powders and colorless synthetic resins preparation of 2-butanol, butane, and amines cleaning fluids printing catalyst carrier acrylic coatings. 

The bulk of polyester production in the United States has gone to the synthetic coatings field in the manufacture of glyptal resin coatings and varnishes, with production between 200,000,000 and 300,000,000 pounds in the postwar years. A recent development has been the use of polyester-styrene copolymers reinforced by Fiberglas for the manufacture of items such as low-pressure molded boats, corrugated structural sheet, and plastic pipe. The 1947 requirements for glycerol in the production of polyester resins and... 

Turpentine is used in syntheses by llie chemical and pharmaceutical industries. It also is used as a paint thinner and as a component of polishes and cleaning compounds. Pine oil finds application as a penetrant, wetting agent and preservative, especially by the textile and paper industries, and as an inexpensive deodorant and disinfectant in specialty products. The resin acids are used in the production of ester gum, Glyptal resins and are indispensable in paper sizing,... 

Direct polyesterification can be used to prepare polymer networks for coating applications. In this case it is necessary to increase the reactivity of the system by using anhydrides instead of a diacid (glycero-phthalic or glyptal resins, Eq. 2.11) or activated alcohols (powder coatings, Eq. 2.12). 

Glyptal resin makes a strong, solid polymer matrix for electronic parts. Glyptal is made from terephthalic acid and glycerol. Draw the stmcture of Glyptal , and explain its remarkable strength and rigidity. 

Use Plasticizer and softening agent, solvent for cellulose derivatives, Glyptal resins, shellac. 

Use Solvent in nitrocellulose coatings and vinyl films, Glyptal resins, paint removers, cements and adhesives, organic synthesis, manufacture of smokeless powder, cleaning fluids, printing, catalyst carrier, acrylic coatings. 

Figure 1.10 Equations for preparation of network glyptal resin.

The author has found the carbohydrate binders (e g. starch, dextrin) superior to phenol formaldehyde resins, maleic and phthalate type resins, polyester, glyptal resins, shellac, vegetable rosins, urea formaldehyde resin and melamine resin in all experiments to date. Dextrins and starches combine good binding properties and low cost with simple handling requirements. 

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