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GB/T 29493.6-2013 English PDF

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US$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 29493.6-2013: Determination of harmful substances in textile dyeing and finishing auxiliaries -- Part 6: Determination of isocyanate groups in polyurethane prepolymers
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 29493.6-2013	189	Add to Cart	3 days	Determination of harmful substances in textile dyeing and finishing auxiliaries -- Part 6: Determination of isocyanate groups in polyurethane prepolymers	Valid

Similar standards

GB/T 29493.3 GB/T 29493.4 GB/T 29493.1 GB/T 29493.9 GB/T 29493.5

Basic data

Standard ID: GB/T 29493.6-2013 (GB/T29493.6-2013)
Description (Translated English): Determination of harmful substances in textile dyeing and finishing auxiliaries -- Part 6: Determination of isocyanate groups in polyurethane prepolymers
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G70
Classification of International Standard: 71.100.40
Word Count Estimation: 8,863
Quoted Standard: GB/T 601-2002; GB/T 6682; GB/T 8170-2008
Adopted Standard: ISO 11909-2007, MOD
Regulation (derived from): National Standards Bulletin 2013 No. 10
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies: Determination of acid group content textile dyeing and finishing auxiliaries polyurethane prepolymer vary. This standard applies to the toluene diisocyanate (TDI), methylene diphenyl diisocyanate (MDI) and other diisocyanate monom

GB/T 29493.6-2013: Determination of harmful substances in textile dyeing and finishing auxiliaries -- Part 6: Determination of isocyanate groups in polyurethane prepolymers

---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.
Determination of harmful substances in textile dyeing and finishing auxiliaries Part 6.. Determination of isocyanate groups in polyurethane prepolymers ICS 71.100.40 G70 National Standards of People's Republic of China Determination of the textile dyeing and finishing auxiliaries harmful substances Part 6. polyurethane prepolymer isocyanate Determination of ester group content -Part 6. Determinationofisocyanategroupsinpolyurethaneprepolymers (ISO 11909.2007, Bindersforpaintsandvarnishes-Polyisocyanateresins -Generalmethodsoftest, MOD) Issued on. 2013-07-19 2013-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 29493 "textile dyeing and finishing auxiliaries of harmful substances Determination" is divided into nine sections. --- Part 1. Determination of polybrominated biphenyls and polybrominated diphenyl ethers by gas chromatography - mass spectrometry; --- Part 2. perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) High performance liquid chromatography - mass Spectroscopy; --- Part 3. organotin compounds by gas chromatography - mass spectrometry; --- Part 4. polycyclic aromatic compounds (PAHs) by gas chromatography - mass spectrometry; --- Part 5. Determination of the formaldehyde content of the emulsion polymer free; --- Part 6. polyurethane prepolymer isocyanate determination of the ester group content; --- Part 7. polyurethane coating finishing agent diisocyanate determination ester monomer; --- Part 8. Determination of acrylic products in the residual monomers; --- Part 9. Determination of acrylamide. This is Part 6 GB/T 29493 of. This section drafted in accordance with GB/T 1.1-2009 given rules. This section uses redrafted Law Amendment uses ISO 11909.2007 "Paints and varnishes polyurethane resin binder Common test method". This part of ISO 11909.2007, compared with more adjustment in the structure, listed in Appendix A of this standard and ISO 11909.2007 The reg number control list. This part of ISO 11909.2007 technical differences exist compared to the terms of these differences has been involved through its outer margin bits Opposed to a single vertical line (|) have been marked, in Appendix B gives the corresponding list of technical differences and their causes. This section also made the following editorial changes. --- Use the "standard" instead of "this International Standard"; --- Deleted international standards foreword. This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Standardization Technical Committee of dye auxiliaries Technical Committee (SAC/TC134/SC1) centralized. This section is drafted. Biography of Hangzhou Fine Chemical Co., Ltd. Zhejiang Chuan, Donghua University. The main drafters of this section. Zhao Ting, Charles Liu Sheng, Zhao Lihui, Cengfan Wen, Luo Jutao. Determination of the textile dyeing and finishing auxiliaries harmful substances Part 6. polyurethane prepolymer isocyanate Determination of ester group content

1 Scope

GB/T 29493 provisions of this part of the textile dyeing and finishing auxiliaries polyurethane prepolymer isocyanate ester group content determination. This section applies to the toluene diisocyanate (TDI), methylene diphenyl diisocyanate (MDI) and other diisocyanate monomer synthesis Polyurethane prepolymer isocyanate ester group content determination.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Preparation of GB/T 601-2002 Chemical Reagent standard titration solution GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) GB/T 8170-2008 revised value represents about rules and limit values \u200b\u200band judgment Principle 3 Urethane prepolymer with an excess of di-n-butylamine. An excess of di-n-butylamine with hydrochloric acid standard solution titration to do bromophenol blue indicator Display the titration end point. Reaction is as follows. R-NCO (C4H9) 2NH → RNHCON (C4H9) 2 (C4H9) 2NH HCl → (C4H9) 2NH · HCl

4 Reagents and solutions

Unless otherwise specified, use water only confirm three analytical grade reagents and GB/T 6682 stipulated. 4.1 toluene, dried calcium sulfate and filtered. 4.2 ethanol. 4.3 di-n-butylamine solution, c [(C4H9) 2NH] = 2.0mol/L or 0.2mol/L. Weigh 6.5g or 65g redistilled anhydrous di-n-butyl Amine, (when 1.033kPa, a boiling point of 157 ℃ ~ 162 ℃), diluted with anhydrous toluene to 250mL, and mix. 4.4 hydrochloric acid standard solution, c (HCl) = 1mol/L or 0.1mol/L. according to GB/T 601-2002 requirements Preparation and calibration. 4.5 bromophenol blue indicator. Weigh 1g of bromophenol blue in a mortar, add 1.5mL concentration of 1mol/NaOH solution of finely L, then Added 20mL of ethanol and 10mL of water to dissolve. 5. Apparatus 5.1 electronic balance, a sense of the amount of 0.0001g. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 29493.6-2013_English be delivered?

Answer: Upon your order, we will start to translate GB/T 29493.6-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 29493.6-2013_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 29493.6-2013_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.