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double end capped (PAG oil)

Russian translation: двуконечный

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
English term or phrase:double end capped (PAG oil)
Russian translation:двуконечный
Entered by: Rikki-Tikki

22:19 Jan 11, 2021
English to Russian translations [PRO]
Tech/Engineering - Petroleum Eng/Sci / polymers
English term or phrase: double end capped (PAG oil)
The double end capped PAG is a chemical structure term. PAG lubricant is an ether based polymer made from ethylene oxide and propylene oxide. The polymer can be started (initiated) from water or an alcohol. If it is started from water and no further post polymerization treatment is performed, you will make a PAG diol (no end capping at all, both ends of the polymer are alcohols). The diols are less stable and take up more water than other types of PAG.

If you start the PAG polymer from an alcohol (butanol for example) and do no post polymerization processing, you will get a single end capped PAG (one end is the terminal alcohol and one is the butane / alkyl end of the butanol initiator). The GM PAG is single end capped.

If you take a single end capped PAG and react it with methyl chloride, you can 'cap' the terminal alcohol and make a double end capped PAG, one with no alcohol groups on the ends of the polymer chain. This is the most stable and least water uptaking PAG available. It is also the most expensive due to the extra processing to cap the terminal alcohol group. The Ford PAG is double end capped.
Rikki-Tikki
двуконечный
Explanation:
См. https://cool--system-ru.turbopages.org/cool-system.ru/s/blog...
Selected response from:

Michael Sarni
United Kingdom
Local time: 19:51
Grading comment
Спасибо!
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +1двуконечный
Michael Sarni


  

Answers


9 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +1
двуконечный


Explanation:
См. https://cool--system-ru.turbopages.org/cool-system.ru/s/blog...

Michael Sarni
United Kingdom
Local time: 19:51
Native speaker of: Native in RussianRussian
PRO pts in category: 4
Grading comment
Спасибо!

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