GB/T 12008.1-2026Plastics — Polyether polyols for the production of polyurethane — Part 1: Designation system (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

This document is Part 1 of GB/T 12008 "Polyether Polyols for the Production of Polyurethane in Plastics". GB/T 12008 has been published. The following section.

---Part 1: Naming System;

---Part 2: Specifications;

---Part 3: Determination of hydroxyl value;

---Part 4: Determination of Sodium and Potassium Content;

---Part 6: Determination of Unsaturation;

---Part 7: Determination of alkaline substance content.

This document supersedes GB/T 12008.1-2009 "Plastics - Polyether Polyols - Part 1: Nomenclature System" and is consistent with GB/T 12008.1- Compared to 2009, aside from structural adjustments and editorial changes, the main technical changes are as follows.

a) Added terms and definitions for polyether polyols, bio-based polyether polyols, and polyether carbonate polyols (see Chapter 3);

b) The standard naming system pattern has been changed (see 4.2, 2009 version 2.1.2);

c) Added identifier characters to the standard naming system pattern (see 4.3.2);

d) The number of digits in character group 1 and the types of commonly used starting agents have been changed (see Table 4, Table 1 in the 2009 edition);

e) The meaning of character group 2 has been changed, and a numerical code has been added indicating the bio-based content in polyether polyols or the CO2 mass content in polyether products. Code (see 4.3.3.3, 2.2 of the 2009 edition);

f) The meaning of character group 3 and the number of digits used to represent the nominal molecular weight have been changed (see 4.3.3.4, 2.3 in the 2009 edition);

g) The meaning of character group 4 and the special character codes have been changed (see 4.3.3.5, 2.4 and 2.5 of the 2009 version).

Introduction

GB/T 12008 "Polyether Polyols for Polyurethane Production in Plastics" is a standard concerning the naming system and product technology of polyether polyols for polyurethane production.

The series of standards, which include technical requirements and testing methods, will consist of eight parts.

---Part 1: Nomenclature System. The aim is to establish a nomenclature system for polyether polyols used in polyurethane production.

---Part 2: Product Specifications. The purpose is to specify the testing items, test methods, inspection rules, and markings for commonly used polyether polyols. This includes signing, packaging, transportation, and storage.

---Part 3: Determination of hydroxyl value. The purpose is to describe a method for determining the hydroxyl value of polyether polyols.

---Part 4: Determination of Sodium and Potassium Content. The purpose is to describe a method for determining the sodium and potassium content in polyether polyols.

---Part 5: Determination of Acid Value. The purpose is to describe a method for determining the acid value of polyether polyols.

---Part 6: Determination of Unsaturation. The purpose is to describe a method for determining the degree of unsaturation of polyether polyols.

---Part 7: Determination of alkaline content. The purpose is to describe a method for determining the alkaline content in polyether polyols.

---Part 8: Determination of Aldehyde and Ketone Content. The purpose is to describe a method for determining the aldehyde and ketone content in polyether polyols.

1 Scope

This document establishes a naming system for polyether polyols used in polyurethane production, and provides a standard naming system model, name code table, and identifier.

Character code table, descriptions of each character group in the feature item group, and naming examples.

This information can also serve as the basis for classifying the product.

2 Normative references

This document has no normative references.

3 Terms and Definitions

The following terms and definitions apply to this document.