About Polyol Esters
In our family of polyol ester, you find high purity dipentaerythritol, pentaerythritol and trimethylolpropane esters for use in applications where thermal stability, high viscosity index and lubricity are essential. Typical usages include raw material for spin finishers and oiling agents, lubricants, lubricating oil, and as jet engine lubricants.
The term "polyol esters" is short for neopentyl polyol esters which are made by reacting monobasic fatty acids with polyhedric alcohols having a "neopentyl" structure. The unique feature of the neopentyl structure of polyol alcohols molecules is the fact that there are no hydrogens on the beta-carbon. As a result, polyol esters usually have added polarity, reduced volatility and enhanced lubricity characteristics. This makes polyol esters ideally suited for the higher temperature applications where the performance of diesters and PAOs may fade.
Hatco uses many different acids and alcohols for manufacturing polyol esters and an even greater number of permutations are possible due to the multiple ester linkages. The difference in ester properties as they relate to the alcohols are primarily those related to molecular weight such as viscosity, pour point, flash point, and volatility. The versatility in designing these fluids is mainly related to the selection and mix of the acids esterified onto the alcohols.
The major application for polyol esters is jet engine lubricants where they have been used exclusively for more than 30 years. In this application, the oil is expected to flow at -54 C, pump readily at -40 C, and withstand sump temperature approaching 200 C with drain intervals measured in years. Only polyol esters have been found to satisfy this demanding application.
Polyol esters are also the ester of choice for blending with PAOs in passenger car motor oils. This application reduces fuel consumption and lowers volatility in modern specifications. They are used in 2-cycle oils for the same reasons plus biodegradability.
Polyol esters are used extensively in synthetic refrigeration lubricants due to their miscibility with non-chlorine refrigerants. They are also widely used in a variety of very high temperature applications such as industrial oven chains, stationary turbine engines, high temperature grease, fire resistant transformer coolants, fire resistant hydraulic fluids, and textile lubricants.
For more information about our extensive line of trimethylolpropane, pentaerythritol esters and dipentaerythritol, we encourage confidential consultation with our technically trained Business Managers who can guide you to the best products or development programs. Given of the complexity involved in balancing the physical, chemical, and performance characteristics of our extensive range of ester products with the exact application and market needs, this preliminary consultation allows for the selection of the best product based on properties determined by you or defined by your application.
You can email us at hatcoinfo@chemtura.com, or submit your requirements using our Ester Design Sheet. Either way you can count on prompt and confidential service.
In general, polyol esters represent the highest performance level available for high temperature applications at a reasonable price.
The primary benefits include extended life, higher temperature operation, reduced maintenance and downtime, lower energy consumption, reduced smoke and disposal, and biodegradability.
在多元醇酯的家人您找到純度高 dipentaerythritol、 季戊四和 trimethylolpropane 酯在應用程式中使用的熱穩定性高粘度指數、 潤滑性是必要。 用於數字顯示名將和加油代理,潤滑劑,潤滑油,和 Jet(噴射機) 引擎潤滑劑,典型的用法包括原料。
"多元醇酯"一詞是縮寫 neopentyl 多元醇酯,由反應一元脂肪酸但有一個"neopentyl"結構的 polyhedric 醇。 聚合醇醇分子 neopentyl 結構的特色是測試碳有沒有 hydrogens。 而導致多元醇酯通常有添加極性、 減少波動性和增強潤滑性特性。 這使得 ideally suited for 較高的溫度應用程式的多元醇酯 diesters 和 PAOs 的性能可能淡的如。
Hatco 使用很多不同的酸及醇醇酯生產和的排列的一個更大的一些可能由於多個酯聯繫。 酯屬性中的差異,有關該醇主要是那些有關分子量粘度、 降點、 閃點,和波動。 與選擇和組合到該醇酯化的酸的主要相關設計這些液體的多功能性。
主要的應用程式的多元醇酯是 Jet(噴射機) 引擎潤滑劑,他們已使用專為三十多年。 在此應用程式中,油預計流量-54 C,很容易在-40 C,泵和耐水倉溫度接近 200 C 與人才流失的時間間隔以年來衡量。 只有多元醇酯找到滿足此要求苛刻的應用程式。
(多元醇酯也是選擇配料 PAOs 與乘客汽車發動機油酯。 此應用程式降低了燃料的消耗量,並降低了現代的規範中的波動。 他們在 2 週期油使用相同的原因加生物降解)。
在綜合製冷潤滑劑,即將其與無氯製冷劑的相容性廣泛使用多元醇酯。 他們亦廣泛用於各種工業烘箱鏈、 固定渦輪引擎、 高溫油脂、 防火變壓器冷卻劑、 防火的液壓油和紡織潤滑劑等很高的溫度應用程式。
我們廣泛的行,trimethylolpropane、 季戊四酯 dipentaerythritol 的更多有關我們鼓勵我們技術上曾受訓練的業務經理可以指導您最好的產品或發展計畫的人機密諮詢。 初步諮詢工作允許選擇最好的產品,根據由您或您的應用程式定義的屬性的提供在平衡我們廣泛酯產品的確切的應用程式和市場需求的物理、 化學和性能特徵的複雜性。
您可以電郵我們在 hatcoinfo@chemtura.com,或您使用我們酯設計工作表的要求提交。 任何一種方式可以計算迅速及保密的服務。
一般情況下,多元醇酯表示最高的性能級別可用於以合理的價格的高溫應用程式。
主要優點包括延長的壽命、 較高的溫度操作、 降低的維護停機時間、 降低能量消耗、 減少的煙霧和處理及生物降解。 |