ASTM D6038-05
(Test Method)Standard Test Methods for Determining the Compatibility of Resin/Solvent Mixtures by Precipitation Temperature (Cloud Point
Standard Test Methods for Determining the Compatibility of Resin/Solvent Mixtures by Precipitation Temperature (Cloud Point
SIGNIFICANCE AND USE
These test methods provide a means of determining the compatibility of a resin (or vehicle), at low concentrations, in a high boiling ink solvent.
Resin-solvent mixtures that exhibit a high precipitation temperature are less compatible than those exhibiting a low precipitation temperature.
Resin-solvent mixtures that exhibit precipitation temperatures at or close to the cloud point of the pure solvent are considered infinitely compatible or the resin is infinitely soluble in that solvent.
SCOPE
1.1 These test methods cover the manual and automatic procedures for testing the compatibility of lithographic ink resins in high boiling ink solvents by precipitation temperature (cloud point) in a range from 35 to 210C.
1.2 The manual procedure in this test method uses laboratory equipment generally available in a normal, well-equipped laboratory. The automated procedure uses the Chemotronic Cloudpoint Tester.
1.3 This test method is for use with ink resins intended mainly for oil-based offset and letterpress inks. The type of resins are typically, but not limited to C9 aromatic hydrocarbon resins, modified dicyclopentadiene resins, rosin pentaerythritol or glycerol esters, phenolic modified rosin esters, maleic anhydride modified-rosin esters, and naturally occurring resins such as gilsonite.
1.4 A resin solution or ink vehicle could also be used in this test instead of the resin.
1.5 The typical high boiling solvents to be used are C12 to C16 petroleum distillates.
1.6 To avoid fire or injury, or both, to the operator, this test method 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° (140°F) as determined by Test Method D 56. Users of this test method should be aware that the flash point of many solvents used for this test (as defined in Test Methods D 56 and D 1310) is exceeded in the heating cycle of this test method. Safety precautions should be taken since there is the potential for vapor ignition. The method outlined should be done in a shielded exhaust hood, where there is access to a fire extinguisher if needed.
1.7 The values stated in SI units are to be regarded as the 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
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Designation:D6038–05
Standard Test Methods for
Determining the Compatibility of Resin/Solvent Mixtures by
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Precipitation Temperature (Cloud Point)
This standard is issued under the fixed designation D 6038; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
The method outlined should be done in a shielded exhaust hood, where
1. Scope*
there is access to a fire extinguisher if needed.
1.1 These test methods cover the manual and automatic
1.7 The values stated in SI units are to be regarded as the
procedures for testing the compatibility of lithographic ink
standard. The values given in parentheses are for information
resins in high boiling ink solvents by precipitation temperature
only.
(cloud point) in a range from 35 to 210°C.
1.8 This standard does not purport to address all of the
1.2 The manual procedure in this test method uses labora-
safety concerns, if any, associated with its use. It is the
tory equipment generally available in a normal, well-equipped
responsibility of the user of this standard to establish appro-
laboratory. The automated procedure uses the Chemotronic
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priate safety and health practices and determine the applica-
Cloudpoint Tester.
bility of regulatory limitations prior to use.
1.3 This test method is for use with ink resins intended
mainly for oil-based offset and letterpress inks. The type of
2. Referenced Documents
resins are typically, but not limited to C aromatic hydrocarbon
9
3
2.1 ASTM Standards:
resins, modified dicyclopentadiene resins, rosin pentaerythritol
D56 Test Method for Flash Point byTag Closed CupTester
or glycerol esters, phenolic modified rosin esters, maleic
D 1310 Test Method for Flash Point and Fire Point of
anhydride modified-rosin esters, and naturally occurring resins
Liquids by Tag Open-Cup Apparatus
such as gilsonite.
E1 Specification forASTM Liquid-in-Glass Thermometers
1.4 Aresin solution or ink vehicle could also be used in this
E 180 Practice for Determining the Precision of ASTM
test instead of the resin.
Methods for Analysis and Testing of Industrial and Spe-
1.5 The typical high boiling solvents to be used are C to
12
cialty Chemicals
C petroleum distillates.
16
E 691 Practice for Conducting an Interlaboratory Study to
1.6 To avoid fire or injury, or both, to the operator, this test
Determine the Precision of a Test Method
method should not be used with low flash point solvents such
as toluene or xylene. The minimum flash point of the solvents
3. Terminology
used should be 60°C (140°F) as determined by Test Method
3.1 Definitions:
D56.
3.1.1 cloud point, n—(precipitation temperature) the tem-
NOTE 1—Users of this test method should be aware that the flash point
perature at which a resin/solvent mixture changes from clear to
of many solvents used for this test (as defined in Test MethodsD56 and
turbid and opaque.
D 1310) is exceeded in the heating cycle of this test method. Safety
3.1.2 compatibility, n—resin and solvent mixture forms a
precautions should be taken since there is the potential for vapor ignition.
clear, homogeneous, and stable solution.
3.1.3 incompatibility, n—resin and solvent mixture does not
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These test methods are under the jurisdiction of ASTM Committee D01 on
form a uniform solution and may be in two phases or opaque.
Paint and Related Coatings, Materials, and Applications and are the direct
3.1.4 precipitation, n—resin separates from the resin/
responsibility of Subcommittee D01.37 on Ink Vehicles.
solvent mixture.
Current edition approved July 1, 2005. Published August 2005. Originally
approved in 1996. Last previous edition approved in 1996 as D 6038 – 96.
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The sole source of supply of the apparatus is Testprint B. V., Zilverweg 10, PO
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Box 127, 8440 AC Heerenveen, The Netherlands. If you are aware of alternative For referenced ASTM standards, visit the ASTM website, www.astm.org, or
suppliers, please provide this information to ASTM International Headquarters. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Your comments will receive careful consideration at a meeting of the responsible Standards volume information, refer to the standard’s Document Summary page on
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technical committee, which you may attend. the ASTM website.
*A Summary of Changes section appears at the end of this standard.
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D6038–05
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3.1.5 solubility, n—the degree of resin compatibility in a 7.5 Hot Air Gun , 260 to 399°C, 120 volts, alternating
give
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