Protective coatings phenolics

Glycol Ethers. Glycol ethers are produced by reaction of propylene oxide with various alcohols such as methanol, ethanol, butanol, and phenol. The products are the mono-, di-, and tripropylene glycol ethers. These products are used in protective coatings, inks, textile dyeing, cleaners, antiicing additives for jet fuel, and as chemical intermediates (276). 

Two-piece food cans may be made by a draw-redraw process, in which lacquer is first applied to and cured on sheet. Blanks are then cut from the sheet and the can is drawn from the blank in two or three stages. The lacquer deforms with the drawing process and lubricates the draw. It then becomes the interior protective coating. Although epoxy-phenolic solvent-borne lacquers are used, even better drawing properties are obtained from organosols. These are dispersions of colloidal polyvinyl chloride powder in solutions of other mixed resins in solvent, e.g. chosen from epoxy, polyester, vinyl and phenolic. 

Protective coatings and lacquers may be applied as a roller or spray coating, usually based on vinyl, epoxy, polyester, phenol-alkyd resin, or wax coatings. 

Phenolic resins also find use in varnishes, electrical insulation, and in other protective coatings. Heat-settings adhesives which are based on phenolics find use in producing plywood. These also find use in the production of ionexchange resins having amine, sulphonic acid, hydroxy or phosphoric acid functional groups. 

Protective coatings are the fourth major user of rosin, either directly or in a modified or derivative form. Varnishes and alkyds are the most common types of protective coatings using rosin. Rosin is combined with a heat-reactive phenol-formaldehyde resin to produce a widely used varnish. Printing inks also use substantial amounts of rosin. 

Amberol [Rohm Haas]. TM for maleic-resin and resin-modified and unmodified phenol-formaldehyde-type polymers in solid form. They react with various oils to produce fast-drying, high-gloss protective coatings and vehicles for printing inks. 

Epon resins [Shell], TM for a series of condensation products of epichlorohydrin and bis-phenol-A having excellent adhesion, strength, chemical resistance, and electrical properties when formulated into protective coatings, adhesives, and structural plastics. 

Phenolic and Other Tar Acid Resins Protective Coatings. Figures on phenolic protective coating resins are given on an annual basis for 1947 (5) and on an annual basis from 1949 through 1951 11). Unmodified phenolic resins are broken out from 1948 to 1950 11). 

In the breakdown by chemical composition, phenol-formaldehyde protective coating resins are broken out from 1941 through 1946. Cresol-formaldehyde (cresylic acid-formaldehyde) protective coating resins are broken out for 1941 through 1943. p-tert-Amy -phenol-formaldehyde is shown separately for 1945 and 1946. Phenol and cresol-aldehyde resins are shown in 1941 and 1952. Mixed phenolic resins are shown for protective coatings in 1945 and 1946 (71). 

Monthly phenolic and other tar acid resins figures for protective coatings are available in 1949 and 1950. They are classed as 100% types containing less than 10% modifiers. In 1951 the class was changed to protective coating resins modified and unmodified except by rosin (9). 

Styrene Resins. This class includes modifications with phthalic alkyds, maleic alkyds, and other monomers, and excludes modifications with phenolics. In the monthly figures, total styrene resins are shown from 1945 to the present date (4, 9), They are now headed Styrene Resins.Originally they were called Styrene and Styrene Derivative Polymer and Copolymer Resins. From July 1945 through 1948, the monthly figures were shown for polystyrene and excluded protective coating resins. Since that time surface coatings are included. 

Epoxy resins form a durable protective coating only when polymerized with amine, polyamide, or esterified fatty acids. Coal-tar epoxies are modified with coal-tar fiUer to improve moisture resistance. Coatings highly resistant to solvents, acids, and alkahs are based on phenoHc cross-linked epoxies. These coatings are used to protect process equipment. When the phenolformaldehyde constituent of phenol is used to cross-hnk epoxy resin instead of amine, the coating has improved resistivity to alkahs. 

Chem. Descrip. Polypropoxy quat. ammonium acetate Uses Antislat conditioner for hair rinse preparations emulsifier tor cosmetics and textile flame retardants solvent for phenolic-type germiddes for cosmetics and toiletries antistat for syn. fibers and plastics tabric conditioner lubricant for textile and industrial formulations solvent dean-ing and scouring agent corrosion inhibitor in protective coatings pigment dispersant in nonaq. media o/w emulsifier Properties Lt. amber oily liq. sol. 25% in ethanol, IPA, acetone, MEK water-disp. sp.gr. 1.02 flash pt. > 93 C (PMCC) pH 6.5 cationic 99% solids... 

Uses Phenolic for heat-curable phenolic/epoxide resin combinations, can coatings, chemically resist, protective coatings Properties Dilutable with MEK, MIBK, ethyl acetate, butyl acetate, methoxypropyl acetate, methoxypropanol dens. = 1.05 g/cm (20 C) dynamic vise. 180-300 mPa S flash pt. = 43 C 63-67% NV Storage 6 mos min. shelf life stored in original containers below 25 C Phenodur PR 260/68B [Solutia]... 

Chem. Descrip. Phenolic resin (55%) in isobutanol/butanol Uses Phenolic for internal/external coating of pkg. containers, can coatings, high-adhesion chemically resist, protective coatings for apparatus, vessels, pipelines, and for heat-curing phenolic/epoxide combinations Features Unplasticized... 

Chem. Descrip. Rosin/phenolic-modified alkyd resin in xylene Uses Alkyd, modifier for coatings, vehicle refinish primers, air drying 1-part metal protective coatings... 

Dimethylaminomethyl phenol curing agent, R.T. 2-pkg. protective coatings... 

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