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Polymerized rosin
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LY/T 1744-2008
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Basic data | Standard ID | LY/T 1744-2008 (LY/T1744-2008) | | Description (Translated English) | Polymerized rosin | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B72 | | Classification of International Standard | 65.050 | | Word Count Estimation | 7,759 | | Date of Issue | 2008-03-31 | | Date of Implementation | 2008-05-01 | | Quoted Standard | GB/T 1722-1992; GB/T 8145-2003; GB/T 8146-2003; LY/T 1145-1993 | | Regulation (derived from) | State Forestry Administration Announcement (Website) | | Issuing agency(ies) | State Forestry Administration | | Summary | This standard specifies the technical requirements of polymerized rosin, test methods, inspection rules, marking, packaging, transport and storage. This standard applies as defined in Chapter 3 polymerized rosin. | LY/T 1744-2008: Polymerized rosin---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Polymerized rosin
ICS 65-050
B72
People's Republic of China forestry industry standards
Polymerization rosin
Posted.2008-03-31
2008-05-01 implementation
State Forestry Administration released
Foreword
This standard was developed on the basis of ZBB72008-1989 "Polymeric Rosin".
This standard compared with the ZBB72008-1989 main changes are as follows.
--- Added terms and definitions;
--- Adjust the technical specifications of the table in the grade and process code location;
--- Removed the technical specifications in the table "C" a modified acid unit symbols;
--- Specified by the original "by the dimer resin acid content of different" to "different by softening point";
--- The color (glass colorimetric), appearance, softening point, acid value, the method of determination of insoluble in ethanol changed to direct reference
GB/T 8146-2003;
--- Increase the factory inspection and type inspection;
--- Polymerization rosin barrel requirements to quote LY/T 1145-1993;
--- Mark in the identification of the specific method of batch numbers, making the product traceable;
--- Increase the relevant provisions of transport.
Appendix A of this standard is an informative annex.
This standard by the Chinese Academy of Forestry Forest Chemical Industry Institute proposed and centralized.
This standard is drafted by the Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry.
The main drafters of this standard. Gao Hong, Song Zhan Qian, Ye Bohui.
This standard replaces the standards previously issued as follows.
--- ZBB72008-1989.
Polymerization rosin
1 Scope
This standard specifies the technical requirements of polymerized rosin, test methods, inspection rules, signs, packaging, transportation and storage.
This standard applies to the polymerization of rosin as defined in Chapter 3.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. All dated references, which are subsequently owned
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to reach an agreement based on this standard research
Whether you can use the latest versions of these files. For undated references, the latest version applies to this standard.
Methods of color determination of varnishes, eighteen oils and thinners GB/T 1722-1992
Gum rosin GB/T 8145-2003
Rosin test methods
LY/T 1145-1993 rosin drums
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
An amorphous transparent solid resin made from gum rosin via catalyst. The main chemical composition is dimeric resin acid, molecule
The formula is C40H60O4.
4 product classification and technical requirements
4.1 Product Classification
According to different softening points, divided into two grades 115 and 140.
By rosin polymerization process is divided into A, B two models. A-type to sulfuric acid as a catalyst to gasoline as the solvent polymerization process;
B-type to sulfuric acid - zinc chloride as a catalyst to gasoline as the solvent polymerization process.
4.2 technical requirements
The technical indicators in line with the provisions of Table 1.
Table 1 Polymerization rosin technical indicators
project
A type B type
115 140 115 140
Colour
Glass color lighter than or equal to two four
Ghana color number is less than or equal to 8 10
Appearance transparent
Softening point (ring and ball method)/° C 110.0 to 120.0 135.0 to 145.0 110.0 to 120.0 135.0 to 145.0
Acid value/(mg/g) ≥ 145.0 140.0 145.0 140.0
Ethanol insolubles /% ≤ 0.050 0.030
Hot water solution /% ≤ 0.20 0.20
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