GB/T 12008.7-2025 Active National standards

GB/T 12008.7-2025 Plastics—Polyether polyols for use in the production of polyurethane—Part 7:Determination of basicity

Publish Date: 2025-03-28 Implement Date: 2025-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 12008.7-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Thermosetting plastics

Publish Date: 2025-03-28

Implement Date: 2025-10-01

Pages: 16 pages

Scope

This document describes a method for determining the content of trace alkaline substances in polyether polyols used in the production of polyurethane. Understanding the content of trace alkaline substances in polyether polyols is crucial for preventing the gelation of reaction materials during the production of polyurethane prepolymers. Controlling the content of alkaline substances in polyether polyols used in polyurethane production is also important for ensuring the sustainability and reproducibility of the reaction. This document is applicable to the quality control of polyether polyols used in polyurethane production, and can also be used as a detection method in research. It is suitable for detecting the content of alkaline substances in polyether polyols with a range of 0 CPR units to 26.7 CPR units. The final result value is expressed in CPR (controlled polymerization rate) units. The method described in this document is not applicable to amine-based polyols.