Home>ASTM Standards>ASTM D5958-99(R2020) pdf free download

ASTM D5958-99(R2020) pdf free download

ASTM D5958-99(R2020) pdf free download.Standard Practices for Preparation of Oil-Based Ink Resin Solutions
1. Scope
1.1 These practices describe laboratory procedures for pre- paring an oil-based ink resin solution in a high-boiling solvent using four pieces of lab equipment: (1) A hot oil bath (Sections 4 to 11), (2) A stirrer/hot plate (Sections 12 to 16), (3) An industrial blender (Sections 17 to 22), and (4) A hot air gun (Sections 23 to 27). ASTM Subcommittee D01.37 recommends using the hot oil bath procedure (Practice D5597) where possible. 1.2 These practices use laboratory equipment generally available in a normal, well-equipped laboratory. 1.3 One or several of these practices allows for rapid resin solution preparation (under 30 min, typical), can regulate the maximum temperature, can be done under an inert atmosphere, and can prevent the random solvent loss during preparation. 1.4 These procedures are for use with ink resins intended mainly for oil-based offset and letterpress inks. The type of resins are typically, but not limited to C 9 aromatic hydrocarbon resins, modified dicyclopentadiene resins, rosin pentaerythritol or glycerine esters, phenolic modified rosin esters, maleic anhydride modified rosin esters, and naturally occurring resins such as gilsonite. 1.5 The typical high boiling solvents to be used include C 12 to C 16 petroleum distillates, 2,2,4 trimethyl 1,3-pentanediol di-isobutyrate, 2 alkali refined linseed oil, tridecyl alcohol, or combinations of the above. 1.6 To avoid fire or injury, or both, to the operator, these practices should not be used with low flash point solvents such as toluene or xylene. The minimum flash point of the solvents used should be 60°C (140°F) as determined by Test Method (Warning—Users of this practice should be aware that the flash point of many solvents used for this test (as defined in Test Methods D56 and D1310) is exceeded in the heating cycle of this test method. Take safety precautions since there is the potential for vapor ignition. Do the methods outlined in a shielded exhaust hood, where there is access to a fire extin- guisher if needed.) 1.7 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability of regulatory limitations prior to use. For specific hazard statement see 25.11. 1.9 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
13. Apparatus
13.1 Erlenmeyer Flask, 125-mL, fitting the following de- scription: a height of 114 mL, an outside base diameter of 67 mL, and an opening of 27 mL. 13.2 Magnetic Stirring Bar, polytetrafluoroethylene-coated, and 25 mm in length. 13.3 Thermometer, capable of reading 0 to 250°C and conforming to Specification E1. Alternately, temperature mea- suring devices such as liquid-in-glass thermometers, thermistors, thermocouples, or platinum resistance thermom- eters that provide equivalent or better accuracy and precision, that cover the temperature range specified, may be used. 13.4 Cork Stopper, high quality, designed to fit the flask used. This cork is then bored out appropriately to receive the thermometer in 13.3 in a snug fashion. The hole should be drilled at an angle of approximately 25° so the tip of the thermometer comes to rest at the inside edge of the flask. Place a small groove on the side of the cork to prevent pressure build-up. 13.5 Hot Plate Stirrer, capable of a surface temperature of 300°C. 13.6 Stop Watch.

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