GB/T 25802-2017 in English
VALIDDisperse brilliant blue E-4R(C.I.Disperse blue 56)
- Issued on:2017-11-01
- Implemented on:2018-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$107.00
| Standard No: | GB/T 25802-2017 |
| Document status: | VALID |
| Title in English: | Disperse brilliant blue E-4R(C.I.Disperse blue 56) |
| Title in Chinese: | 分散艳蓝E-4R（C.I.分散蓝56） |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-11-01 |
| Implemented on: | 2018-05-01 |
| Superseding: |
GB/T 25802-2010 Disperse brilliant blue E-4R (C.I.Disperse blue 56)
|
| Professional Classification: | GB-National Standard |
| Related Keywords: | disperse blue e-4r
brilliant blue e-4r ci disperse blue dispersion index dispersion index colorimetric color light index |
| Related Topics: | e-4r+
blue dispersion gorgeous day Disperser Disperser Molecular weight 56 Shang Yan'e Molecular weight more than 56 disperse blue Before and after particle size dispersion GBT25802 GB/T 25802-2010 GB/T 25802-2017 Zong Yanmin |
《GB/T 25802-2017分散艳蓝E-4R（C.I.分散蓝56）》由TC134（全国染料标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
Introduction
1. Standard background and technology evolution analysis
GB/T 25802—2017 is an important standard for the dye industry of the People's Republic of China, replacing the old standard GB/T 25802—2010. This standard mainly specifies the quality requirements, test methods and inspection rules for Disperse Blue E-4R (CI Disperse Blue 56).
2. Comparison table of standard frameworks
| Old version of the standard (GB/T 25802—2010) | New version of the standard (GB/T 25802—2017) | Main changes |
|---|---|---|
| Colorimetric color light index is not clearly specified | Colorimetric color light index is newly added (see 3.1) | Standardized test dimensions are added |
| Brief description of dispersion index | Dispersion index is modified, and it is clearly required to be A/3 grade | Product performance requirements are improved |
3. Implementation suggestions and practical applications
Case analysis: In the textile dyeing process, Disperse Blue E-4R is often used for dyeing polyester fabrics. According to the standard requirements, it is necessary to ensure that its color fastness meets the technical indicators specified in Table 2.
- It is recommended to use the high temperature dyeing color uptake determination method in GB/T 9337-2009 to ensure the dyeing effect.
- In practical applications, it is necessary to pay attention to controlling the dyeing bath ratio (1:40 is the recommended value) to ensure that the dispersibility and high temperature dispersion stability meet the A/B grade requirements.
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