HG/T 2706-1995 Nomenclature of polyester polyols

HG/T 2706-1995 Polyester polyol nomenclature HG/T2706-1995 standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Nomenclature of Polyester Polyols
Subject Content and Scope of Application
HG/T2706-95
This standard specifies the composition and expression method of the nomenclature of adipic acid-based polyester polyols. This nomenclature method is based on the type of raw materials used, characteristic properties, and main uses of polyester polyols. This standard is applicable to the classification and nomenclature of saturated ester polyols for urethane. 2 Naming method
The naming method of polyester polyols consists of abbreviations and models. 2.1 Abbreviation code
The abbreviation code of polyester polyols is specified as "PES\, and the abbreviation code of polyester polyols is specified as *PESM\. 2.2 Model
The model of polyester polyols consists of the blue part:-
Code for low molecular weight polyols
Code for hydroxyl value of polyester polyols
Code for main use
2.2.1 The codes of low molecular weight polyols are shown in Table 1 and are expressed in Arabic numerals. For more than two low molecular weight polyols, the numbers representing the polyol codes are in the order of the primary and secondary polyols used; arranged from left to right. When only one polyol is used, the second digit is replaced by "0".
Polyol
Ethylene glycol
Propanediol
1, 4-Butanediol
Propylene glycol
Neo-butylene glycol
Diethylene glycol
1, 6-Hexanediol
Trimethylolpropane
Dipropylene glycol
Approved by the Ministry of Chemical Industry of the People's Republic of China on May 5, 1995
Implementation on January 1, 1996
HG / T 2706 — 95
2.2.2 The code for the hydroxyl value of polyester polyols is represented by three Arabic numerals according to the average value of the actual hydroxyl value range. If the hydroxyl value is a two-digit number, the first digit is replaced by "0". 22.3 The code for the main use of polyester polyols is represented by English letters, see Table 2. Table 2
Main uses
Urethane adhesives
Urethane coatings
Urethane adhesivesWww.bzxZ.net
Soft polyurethane Ester foam beads
Hard short fat concentrated foam
3 Naming examples
3. A polyester polyol is a polyester polyol produced with adipic acid and ethylene glycol as the main raw materials, with a hydroxyl value of 53~59mgKOH/g, and is used for coating polyurethane resin, and is named: PES-10056C, 32 a polyester polyol is a polyester polyol produced with adipic acid, ethylene glycol and diethylene glycol as the main raw materials, with a hydroxyl value of 71~7 9m KOH/polyol: For the soles of the nitrile resin, it is named: PES-16075E, 3.3 A kind of ester polyol, which is a ester polyol produced with adipic acid, ethylene glycol and propylene glycol as the main raw materials, with a hydroxyl value of
530~550mgKOH/g, used for rigid foam plastics, it is named: PES-14540R. 3.4 A certain polyester polyol, which is a polyester polyol produced with adipic acid, ethylene glycol and propylene glycol as the main raw materials, with a hydroxyl value of 53~59mgXOH/g, used for elastomers, it is named: PES-12056E. Additional remarks:
This standard is proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China, and this standard is under the jurisdiction of the Plastic Resin Products Branch of the National Plastic Standardization Technical Committee (TC15/SC4). This standard was drafted by Yantai Synthetic Apple General Factory, and the main drafters of this standard are Zhu Xiuying, Shan Qing, and Deng Bingqiao.
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