ASTM D1725-04

Standard Test Method for Viscosity of Resin Solutions

ABSTRACT
This test method details the standard procedure for measuring the viscosity of resin solutions. The apparatuses required here are constant-temperature water bath, wide-mouthed screw capped bottles, cellophane sheets, No. 2 short taper corks, viscosity tube holder, bottle shaker, timing device, and viscosity tubes. Solid resins are dissolved in organic solvents by cold-cut or hot-cut methods in the laboratory. The viscosity of such prepared solutions, or of commercial solutions of resins is then determined by the bubble time method. The bubble seconds are approximately equal to stokes.
SCOPE
1.1 This test method covers the measurement of the viscosity of resin solutions.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 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

• Status: Historical
• Publication Date: 29-Feb-2004
• ICS: 87.060.20 - Binders
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.33 - Polymers and Resins

Relations

• Replaces: ASTM D1725-62(1996)e1 - Standard Test Method for Viscosity of Resin Solutions
• Effective Date: 01-Mar-2004
• Replaced By: ASTM D1725-12 - Standard Practice for Preparing Resin Solutions for Viscosity Measurement by Bubble Time Method
• Effective Date: 15-Jul-2012
• Referred By: ASTM D5062-09(2020) - Standard Test Method for Resin Solution Dilutability by Volumetric/Gravimetric Determination
• Effective Date: 01-Mar-2004
• Referred By: ASTM D5165-12(2020) - Standard Practice for Laboratory Preparation of Gelled Vehicles Using a Resin Kettle
• Effective Date: 01-Mar-2004
• Referred By: ASTM D5958-99(2020) - Standard Practices for Preparation of Oil-Based Ink Resin Solutions
• Effective Date: 01-Mar-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D1725–04
Standard Test Method for
1
Viscosity of Resin Solutions
This standard is issued under the fixed designation D1725; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope prepared solutions, or of commercial solutions of resins is then
determined by the bubble time method (Test Method D1545).
1.1 This test method covers the measurement of the viscos-
The bubble seconds are approximately equal to stokes.
ity of resin solutions.
1.2 The values stated in SI units are to be regarded as the
5. Apparatus
standard. The values given in parentheses are for information
5.1 Bath, constant-temperature, consisting of a cylindrical
only.
glass jar of about 5-gal capacity, or an aquarium tank with
1.3 This standard does not purport to address all of the
controls capable of maintaining the temperature at 25 6 0.1°C
safety concerns, if any, associated with its use. It is the
with water as the bath medium.
responsibility of the user of this standard to establish appro-
5.2 Bottles, 225-mL (8-oz), wide-mouth, screw cap.
priate safety and health practices and determine the applica-
5.3 Cellophane, sheet, cut into 102 or 127- mm (4 or 5-in.)
bility of regulatory limitations prior to use. For specific hazard
squares.
statements, see Section 7.
5.4 Corks, No. 2 short taper, to fit viscosity tubes.
2. Referenced Documents 5.5 Holder for Viscosity Tubes, preferably a mechanical
4
2
holder withrackandpinionforinvertingthetubes.Theholder
2.1 ASTM Standards:
should be checked with a small level and T-square to make
D154 Guide for Testing Varnishes
certain it holds the tubes in an exact vertical position after
D1545 Test Method forViscosity ofTransparent Liquids by
being placed in the constant-temperature bath.
Bubble Time Method
5.6 Bottle Shaker, preferably one which will give end-over-
D6440 Terminology Relating to Hydrocarbon Resins
end agitation.
E691 Practice for Conducting an Interlaboratory Study to
5.7 Timing Device, such as a stopwatch or electric stop
Determine the Precision of a Test Method
clock capable of being read to a precision of 0.1 s.
2.2 Other Document:
5.8 Viscosity Tubes, of clear glass and flat bottoms, having
OSHA Regulations, 29 CFR, paragraphs 19.10.1000 and
3 10.65 6 0.025-mm inside diameter and 114 6 1-mm outside
1910.1200
length. Plainly legible lines shall be located on the tubes as
3. Terminology follows:
27 6 0.5 mm
3.1 For definitions related to hydrocarbon resins see Termi-
100 6 0.5 mm
nology D6440.
108 6 0.5 mm
4. Summary of Test Method
All distances shall be measured from the bottom outside of
the tube. The distance between the first and second lines shall
4.1 Solid resins are dissolved in organic solvents by cold-
be 73 6 0.5 mm.
cut or hot-cut methods in the laboratory. The viscosity of such
6. Solvent
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
6.1 The solvent used should be mutually agreed upon
and Related Coatings, Materials, andApplications and is the direct responsibility of
between the purchaser and the manufacturer. Toluene, xylene,
Subcommittee D01.33 on Polymers and Resins.
mineral spirits, alcohols, etc., are used for the preparation of
Current edition approved Mar. 1, 2004. Published March 2004. Originally
´1
approved in 1960. Last previous edition approved in 1962 as D1725 – 62 (1996) .
solutions of resins. For a given resin, the viscosity obtained
DOI: 10.1520/D1725-04.
will depend on the solvent used. In case of dispute, both
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
laboratories should use portions of the same batch of solvent.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments, A suitable mechanical holder is available from the Gardner Laboratory, Inc.,
732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401. 5521 Landy Lane, Washington, DC, Item 660.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1725–04
7. Hazards with swirling as necessary to prevent any charring or scorching
of the resin. Usually, the solution will be complete in 15 or 20
7.1 Consult current OSHA regulations, supplier’s Material
min.
Safety Data Sheets, and local regulations for all materials used
8.3.3 When the solution is complete, cool the flask, discon-
in this test method.
nect, and weigh. If ove
...