ASTM D4676-94(2021) - 1.11.2021
 
Significance and Use

3.1?There are many different antidegradants available for use in the rubber industry.

3.2?This classification of the various materials covers their chemical structure along with a brief reference to their overall use and their properties.

 
1. Scope

1.1?This classification covers antidegradants used in rubber and where appropriate defines their important chemical and physical characteristics for use in rubber.

1.2?The general term antidegradant describes materials used in rubber to protect against the effects of oxygen and ozone. Materials that fall in this general category include both antioxidants and antiozonants.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

D1747-09(2019)

Standard Test Method for Refractive Index of Viscous Materials

E28-18(2022)

Standard Test Methods for Softening Point of Resins Derived from Pine Chemicals and Hydrocarbons, by Ring-and-Ball Apparatus

D1519-95(2023)

Standard Test Methods for Rubber Chemicals—Determination of Melting Range

D1218-21

Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids

D2702-05(2021)

Standard Practice for Rubber Chemicals—Determination of Infrared Absorption Characteristics

D5376-06(2021)

Standard Test Method for Rubber Compounding Materials—Determination of the Basic Nitrogen Content in Rubber Antioxidant: Polymerized TMQ

D4937-96(2021)

Standard Test Method for p-Phenylenediamine Antidegradants Purity by Gas Chromatography

D4574-22

Standard Test Methods for Rubber Compounding Materials—Determination of Ash Content

D4571-22

Standard Test Methods for Rubber Compounding Materials—Determination of Volatile Material

D3461-18

Standard Test Method for Softening Point of Asphalt and Pitch (Mettler Cup-and-Ball Method)