Resin oil varnish

White, R., A review with illustrations of resin/oU varnish mixtures, methods applicable to the analysis of resin/oil varnish mixtures, report 2/16/81, in ICOM Committee for Conservation, 6th Triennial Meeting, Ottawa, 1981. 

The most important coating appHcation for the nonreactive polyamide resins is in producing thixotropy. Typical coating resins such as alkyds, modified alkyds, natural and synthetic ester oils, varnishes, and natural vegetable oils can be made thixotropic by the addition of dimer acid-based polyamide resins (see Alkyd resins). Specialty high performance coating appHcations often requite the properties imparted by dimer acid components. 

Leindl, n. linseed oil. -ersatz, m. linseed-oil substitute, -fettsaure,/. fatty acid of linseed oil. -finds, m. linseed oil varnish, boiled linseed oil. -hsrzlack, m. linseed oil resin varnish. -kuchen, m. linseed cake, oil cake. 

The current practice is to classify as oil varnishes all varnishes and paint media prepared from drying oils and natural or preformed oil-free synthetic resins. Examples of such resins are rosin, rosin-modified phenolics and oil-soluble 100% phenolics. The introduction of the resin results in improved drying and film properties. 

It is easy to measure the potential of this system and it has been found that membranes of polystyrene, linseed oil and a tung oil varnish yielded diffusion potentials of 43-53 mV, the dilute solution being always positive to the concentrated. Similar results have been obtained with films of nitrocellulose, cellulose acetate , alkyd resin and polyvinyl chloride . 

Substituted phenols such as cresols, p-fcrf-butylphenol, / -phcnylphenol, resorcinol, and cardanol (derived from cashew nut shells) have also been used as precursors for phenolic resins. Alkylphenols with at least three carbons in the substituent lead to more hydrophobic phenolic resins that are compatible with many oils, natural resins, and rubbers.7 Such alkylphenolic resins are used as modifying and crosslinking agents for oil varnishes, as coatings and printing inks, and as antioxidants and stabilizers. Bisphenol-A (2,2-p-hydroxyphenylpropane),... 

Alkyd resins Paints, varnishes Drying oils Very low solubility the product becomes irremovable with ageing... 

Phenolic novolacs, 18 760-761 Phenolic resin adhesives, 18 783-784 Phenolic resin can coatings, 18 38 Phenolic resin composites, 18 792-794 Phenolic resin drying-oil varnishes, 18 783 Phenolic resin fibers, 18 797-798 mechanical properties of, 18 798 Phenolic resin foam, 18 795-796 Phenolic resin manufacturers, U.S., 18 774 Phenolic resin polymerization, 18 760-765 alkaline catalysts in, 18 762-765 neutral catalysts in, 18 761-762 strong-acid catalysts in, 18 760-761 Phenolic resin prepregs, 18 793 Phenolic resin production unit, 18 766 Phenolic resins, 10 409 18 754-755, 756-802 22 10 26 763 in abrasive materials, 18 786-787 in air and oil filters, 18 790 additional reactants in, 18 759 analytical methods for, 18 774-779 applications of, 18 781-798 batch processes for, 18 766 from biomass and biochemical processes, 18 769-770... 

Hexanone is not currently manufactured, processed, or used for commercial purposes in the United States (EPA 1987b). 2-Hexanone had been used as a solvent for many materials, primarily in the lacquer industry as a solvent for lacquers and varnish removers. It had also been used as a solvent for ink thinners, resins, oils, fats, and waxes. 2-Hexanone had also been used as an intermediate in the synthesis of organic chemicals (ACGIH 1986 HSDB 1989). 

Naphtenic hydrocarbons yield products similar to paraffins upon oxidation. Aromatic hydrocarbons are che most readily oxidized constituents of lubricating oils. The end products are very complex condensation and polymerization products and tend to be Insoluble in oil. These products constitute the sludges, resins and varnishes which allegedly cause piston ring sticking in the engine. 

Fatty Oil, etc.—Mixtures of colophony (or other resin, especially copal) with resinates, oleates and linseed oil are sold for the preparation of varnishes, and mixtures of colophony with mineral oils, resin oils, fatty oils, solid fats, paraffin wax, ceresine or wax for use as brewers pitch. For the recognition of such mixtures, the following tests may be made. 

They are usually classified as Volatile and Fatty Varnishes. The former, known also as spirit varnishes, lac varnishes, oil of turpentine varnishes, etc., are solutions of resins and similar products in volatile solvents, while the latter, termed also oil varnishes, have as basis drying oils or are solutions of resins or resinates in drying oils, mostly with volatile solvents and often with colouring matters. 

Complete analysis of a varnish is often extremely difficult. The difficulties are greatest with oil varnishes, these containing drying oils and resins which have been heated so that their physical and chemical characters (solubility in different solvents, density, colour reactions, iodine, acid and saponification numbers, etc.) are changed. Even with simpler varnishes it is difficult to ascertain if they are prepared from a single resin or from several. Minor difficulties are encountered in the determination of the nature of the volatile solvents, although these are sometimes complex mixtures. 

Examination of the Residue.—From the appearance of the residue obtained on steam distillation, it is easy to decide whether the product is a volatile varnish or an oil varnish. The former leaves a compact, brittle, resinous residue, whereas the latter gives a more or less dense residue with an oily aspect and the odour characteristic of drying oils. 

B) Oil Varnish. The most important tests to be made on these varnishes are those for resinates, resins, mineral colours and thickeners, and those for establishing the characters of the drying oil. 

Trichloroethene 20d X X Dry cleaning degreasing of fabricated metal parts solvent for fats, waxes, resins, oils, rubber, paints and varnishes inhalation analgesic and anaesthetic... 

Set-off can be avoided by the use of anti-set-off compoimds. These are spray powders that reduce the frictional contact between the sheets. Materials like silica and starch, which have a particle diameter slightly greater than the printed ink film thickness, can be used. Slow setting problems may be reduced by the use of less solvent or by a higher ratio of resin to oil. Varnishing with a formula that utilises polymerisation induced by radiation is another way to avoid set-off. The varnish covers the printed surface and direct contact between the layer of print and the iimer food contact surface of the substrate is avoided. 

Ethyleneglycol Ethylether Acetate, Glycol Monoethylether Acetate or "Ceilosoive" Acetate, CH COO.CHg.CHa.OC Hjj mw 132,16 colorless liq with mild ether-like odor sp gr 0.9748 at 20/20°, njj 1,4030 at 25 fr p -61.7° bp 156.3 , H P 135°F sol in w (20%) and miscible with ale, eth, acet and aromatic hydrocarbons can be prepd by treating ethyleneglycol monoethylether with acetyl chloride. Its toxicity is discussed in Ref 3, p 313. It is used as solvent for NC, oils resins removes varnish and retards blushing in lacquers... 

Use Artificial jasmine and other perfumes, soap perfume, flavoring, solvent and high boiler for cellulose acetate and nitrate, natural and synthetic resins, oils, lacquers, polishes, printing inks, varnish removers. 

Use Plasticizer, carbon softener and remover, heat-transfer medium, solvent for rubber, aniline and other dyes, mineral and vegetable oils, varnish gums and resins, waxes. 

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