ASTM D3642-13

Standard Test Method for Softening Point of Certain Alkali-Soluble Resins

SIGNIFICANCE AND USE
4.1 In general, with materials of this type, softening does not take place at a definite temperature. As the temperature rises, these materials gradually and imperceptibly change from brittle solids to soft, viscous liquids. For this reason, the determination of the softening point must be made by a fixed, arbitrary, and closely defined methods if the results are to be comparable.
SCOPE
1.1 This test method covers the determination of the softening point of certain alkali-soluble resins having uniform plastic flow characteristics as the melting point is approached.  
1.2 The resin manufacturer should specify whether or not this test method may be used for his product(s).  
1.3 This test method is not suitable for styrene-maleic anhydride resins. Note 1—For testing rosin and other resins, see Test Method E28. For testing asphalts, tars, and pitches, see Test Method D2398.  
1.4 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: 30-Sep-2013
• ICS: 83.080.10 - Thermosetting materials
• Technical Committee: D21 - Polishes
• Drafting Committee: D21.02 - Raw Materials

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D3642 − 13
Standard Test Method for
1
Softening Point of Certain Alkali-Soluble Resins
This standard is issued under the fixed designation D3642; 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 4. Significance and Use
1.1 This test method covers the determination of the soft- 4.1 In general, with materials of this type, softening does
ening point of certain alkali-soluble resins having uniform not take place at a definite temperature. As the temperature
plastic flow characteristics as the melting point is approached. rises, these materials gradually and imperceptibly change from
brittle solids to soft, viscous liquids. For this reason, the
1.2 The resin manufacturer should specify whether or not
determination of the softening point must be made by a fixed,
this test method may be used for his product(s).
arbitrary, and closely defined methods if the results are to be
1.3 This test method is not suitable for styrene-maleic
comparable.
anhydride resins.
5. Apparatus
NOTE 1—For testing rosin and other resins, see Test Method E28. For
testing asphalts, tars, and pitches, see Test Method D2398. 5.1 Ring—A brass-shouldered ring conforming to the di-
mensions shown in Fig. 1(a).
1.4 This standard does not purport to address all of the
3
safety concerns, if any, associated with its use. It is the
5.2 Ball—Asteel ball, 9.53 mm ( ⁄8 in.) in diameter, weigh-
responsibility of the user of this standard to establish appro-
ing between 3.45 and 3.55 g.
priate safety and health practices and determine the applica-
5.3 Ball-Centering Guide—A guide for centering the ball,
bility of regulatory limitations prior to use.
constructed of brass and having the general shape and dimen-
sions illustrated in Fig. 1(c).
2. Referenced Documents
2 5.4 Container—Aglass vessel, capable of being heated, not
2.1 ASTM Standards:
less than 85 mm (3.34 in.) in diameter and not less than 127
D2398 Test Method for Softening Point of Bitumen in
3 mm (5 in.) in depth from the bottom of the flare. (An 800-mL,
Ethylene Glycol (Ring-and-Ball) (Withdrawn 1984)
low-form Griffin beaker of heat-resistant glass meets this
E28 Test Methods for Softening Point of Resins Derived
requirement.)
from Pine Chemicals and Hydrocarbons, by Ring-and-
Ball Apparatus 5.5 Support for Ring and Thermometer, as shown in Fig.
E2251 Specification for Liquid-in-Glass ASTM Thermom- 1(d). Note the following requirements:
eters with Low-Hazard Precision Liquids 5.5.1 The ring shall be supported in a horizontal position.
5.5.2 The bottom of the ring shall be 25.4 mm (1 in.) above
3. Terminology
the horizontal plate below it.
5.5.3 The bottom surface of the horizontal plate shall be at
3.1 Definitions:
least 12.5 mm (0.5 in.) and not more than 19 mm (0.75 in.)
3.1.1 softening point—thetemperatureatwhichadiskofthe
above the bottom of the beaker.
sample held within a horizontal ring is forced downward a
5.5.4 The depth of liquid in the beaker shall be not less than
distance of 1 in. (25.4 mm) under the weight of a steel ball as
102 mm (4 in.).
the sample is heated at a prescribed rate in a glycerin bath.
5.5.5 The thermometer shall be suspended so that the
bottom of the bulb is level with the bottom of the ring and
1
This test method is under the jurisdiction ofASTM Committee D21 on Polishes
within 12.7 mm (0.5 in.) but not touching the ring.
and is the direct responsibility of Subcommittee D21.02 on Raw Materials.
5.6 Thermometer—An ASTM High Softening Point
Current edition approved Oct. 1, 2013. Published October 2013. Originally
approved in 1978. Last previous edition approved in 2010 as D3642 – 98
Thermometer, having a range from 30 to 200°C, and conform-
(2010).DOI: 10.1520/D3642-13
ing to the requirements for Thermometer 16C as prescribed in
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Specification E2251.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
5.7 Mechanical Stirrer—A variable-speed, motor-driven
the ASTM website.
3
stirrer attached to the bottom of a true-vertical shaft must be
The last approved version of this historical standard is referenced on
www.astm.org. used to ensure uniform heat distribution. The stirrer shall be
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3642 − 13
FIG. 1 Shouldered Ring, Ring Holder, Ball-Centering Guide, and Assembly of Apparatus Showing Two Rings
pos
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D3642 − 98 (Reapproved 2010) D3642 − 13
Standard Test Method for
1
Softening Point of Certain Alkali-Soluble Resins
This standard is issued under the fixed designation D3642; 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
1.1 This test method covers the determination of the softening point of certain alkali-soluble resins having uniform plastic flow
characteristics as the melting point is approached.
1.2 The resin manufacturer should specify whether or not this test method may be used for his product(s).
1.3 This test method is not suitable for styrene-maleic anhydride resins.
NOTE 1—For testing rosin and other resins, see Test Method E28. For testing asphalts, tars, and pitches, see Test Method D2398.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
3
D2398 Test Method for Softening Point of Bitumen in Ethylene Glycol (Ring-and-Ball) (Withdrawn 1984)
E1 Specification for ASTM Liquid-in-Glass Thermometers
E28 Test Methods for Softening Point of Resins Derived from Naval Stores by Ring-and-Ball Apparatus
E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids
3. Terminology
3.1 Definitions:
3.1.1 softening point—the temperature at which a disk of the sample held within a horizontal ring is forced downward a distance
of 1 in. (25.4 mm) under the weight of a steel ball as the sample is heated at a prescribed rate in a glycerin bath.
4. Significance and Use
4.1 In general, with materials of this type, softening does not take place at a definite temperature. As the temperature rises, these
materials gradually and imperceptibly change from brittle solids to soft, viscous liquids. For this reason, the determination of the
softening point must be made by a fixed, arbitrary, and closely defined methods if the results are to be comparable.
5. Apparatus
5.1 Ring—A brass-shouldered ring conforming to the dimensions shown in Fig. 1(a).
3
5.2 Ball—A steel ball, 9.53 mm ( ⁄8 in.) in diameter, weighing between 3.45 and 3.55 g.
5.3 Ball-Centering Guide—A guide for centering the ball, constructed of brass and having the general shape and dimensions
illustrated in Fig. 1(c).
5.4 Container—A glass vessel, capable of being heated, not less than 85 mm (3.34 in.) in diameter and not less than 127 mm
(5 in.) in depth from the bottom of the flare. (An 800-mL, low-form Griffin beaker of heat-resistant glass meets this requirement.)
1
This test method is under the jurisdiction of ASTM Committee D21 on Polishes and is the direct responsibility of Subcommittee D21.02 on Raw Materials.
Current edition approved May 1, 2010Oct. 1, 2013. Published May 2010October 2013. Originally approved in 1978. Last previous edition approved in 20042010 as
D3642 – 98 (2004).(2010).DOI: 10.1520/D3642-98R10.10.1520/D3642-13
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3642 − 13
FIG. 1 Shouldered Ring, Ring Holder, Ball-Centering Guide, and Assembly of Apparatus Showing Two Rings
5.5 Support for Ring and Thermometer, as shown in Fig. 1(d). Note the following requirements:
5.5.1 The ring shall be supported in a horizontal position.
5.5.2 The bottom of the ring shall be 25.4 mm (1 in.) above the horizontal plate below it.
5.5.3 The bottom surface of the horizontal plate shall be at least 12.5 mm (0.5 in.) and not more than 19 mm (0.75 in.) above
the bottom of the beaker.
5.5.4 The depth of liquid in the beaker shall be not less than 102 mm (4 in.).
5.5.5 The thermometer shall be suspended so that the bottom of the bulb is level with the bottom of the ring and within 12.7
mm (0.5 in.) but not t
...