They make:
-Adipates
Wiki: Adipate (-OOC-(CH2)4-COO-) is the ionized form of adipic acid.
As food additives, adipates are used as acidity regulators. Examples are sodium adipate (E356) and potassium adipate (E357).
-Phthalates
Wiki: Phthalates are used in a large variety of products, from enteric coatings of pharmaceutical pills and nutritional supplements to viscosity control agents, gelling agents, film formers, stabilizers, dispersants, lubricants, binders, emulsifying agents, and suspending agents. End applications include adhesives and glues, agricultural adjuvants, building materials, personal care products, medical devices, detergents and surfactants, packaging, children's toys, modelling clay, waxes, paints, printing inks and coatings, pharmaceuticals, food products and textiles. Phthalates are also frequently used in soft plastic fishing lures, caulk, paint pigments, and sex toys made of so-called "jelly rubber." Phthalates are used in a variety of household applications such as shower curtains, vinyl upholstery, adhesives, floor tiles, food containers and wrappers, and cleaning materials. Personal care items containing phthalates include perfume, eye shadow, moisturizer, nail polish, liquid soap, and hair spray. [1] They are also found in modern electronics and medical applications such as catheters and blood transfusion devices. The most widely-used phthalates are the di-2-ethyl hexyl phthalate (DEHP), the diisodecyl phthalate (DIDP) and the diisononyl phthalate (DINP). DEHP is the dominant plasticizer used in PVC, due to its low cost. Benzylbutylphthalate (BBzP) is used in the manufacture of foamed PVC, which is mostly used as a flooring material. Phthalates with small R and R' groups are used as solvents in perfumes and pesticides.
-Trimellitates
Trimellitate Esters
These materials are produced by the esterification of a range of alcohols with trimellitic anhydride (TMA), which is similar in structure to phthalic anhydride with the exception of a third functionality on the aromatic ring. Consequently, esters are produced in the ratio of three moles of alcohol to one mole of anhydride. Common esters in this family are Tris-2-ethyhexyl trimellitate (Tri-octyl trimellitate - TOTM), L79TM (an ester of mixed semi-linear C7 and C9 alcohols, and L810TM, an ester of mixed C8 and C10 linear alcohols.
The principle features of these esters, when processed with PVC, is their low volatility, and consequently large volumes of trimellitate esters are used in high specification electrical cable insulation and sheathing. The extraction and migration resistance of these materials are also significantly improved relative to the phthalates. The low volatile loss also results in usage in automotive interior applications where the issue of windscreen fogging is important. In this respect they often compete with the linear high molecular weight phthalates such as 911P.
-Neopolyols
A preferred synthetic lubricant is neopolyol esters which are formed from the esterification of neopolyols and monocarboxylic acids. Thus, for example, use of neopolyols such as neopentyl glycol, trimethylolethane, trimethylolpropane, monopentaerythritol, technical grade pentaerythritol, dipentaerythritol, tripentaerythritol and the like can be esterified with carboxylic acids ranging from formic acid, acetic acid, propionic acid, up through long chain carboxylic acids both linear and branched. Typically, the acids employed range from C5 to C22.
One typical method of production of polyol esters would be to react a neopolyol with a carboxylic acid at elevated temperatures in the presence or absence of an added catalyst. Catalysts such as sulfuric acid, p-toluene sulfonic acid, phosphorous acid, and soluble metal esterification catalysts are conventionally employed.
While the method of production of neopolyol esters as outlined above is well known, the method produces materials with a set of standard properties. For a given combination of neopolyol and acid (or mixtures thereof) there is a set of product properties such as viscosity, viscosity index, molecular weight, pour point, flash point, stability, polarity, and biodegradability which are inherent to the compositions formed by the components in the recipe. To get out of the box of viscosity and other properties imposed by structure, attempts have been made to increase the viscosity of neopolyol esters by means of a second acid, a polybasic acid, in addition to, or instead of, the monocarboxylic acids described above. Thus, employing a polybasic acid such as, e.g., adipic acid, sebacic acid, azelaic acid and/or acid anhydrides such as, succinic, maleic and phthalic anhydride and the like enables one to have the components of a polymeric system when reacted with a neopolyol. By adding a poly- or di-basic acid to the mix, one is able to achieve some degree of cross-linking and/or oligomerization, thereby causing molecular size growth such that the overall viscosity of the system is increased.
High viscosity oils (greater than 100 cSt at 40° C.) are desirable for two reasons: alone, in certain end use applications such as greases, heavy duty engine oils, certain hydraulic fluids and the like, and in blends with lower viscosity oils to achieve a wide viscosity range of products for various iso grades. Complex acid esters like those described above (i.e., esters produced using a polyol, a polybasic acid for cross-linking, and a monobasic acid for end-capping), however, have inherent problems such as high acid numbers and high cost.
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From the PDF's for their "basic" lists (obviously does not include custom blends which they advertise making), they market the Esterex Adipate line thusly:
Quote:
Esterex™ Adipate Esters can be used as sole basestocks or blendstocks with other synthetic fluids in many automotive and industrial
lubricant applications. These esters are ideal in high-temperature conditions, such as reciprocating air compressors, where discharge
valve cleanliness is required.
That is the only line that is listed with "cleanliness" as an advertising feature. Whether this is maintained cleanliness as in the product does not leave deposits, or that it has the ability to prevent and remove deposits? I don't know.
They also produce AN's as well as custom chemicals.
Quote:
For nearly half a century, we have been a leading manufacturer in synthetic base fluids and additive packages. Our products provide outstanding performance and have been developed with, and tested and evaluated for, compliance with globally recognized industry standards. And, to meet today’s growing demand for synthetic base fluids and additives, we offer tailored solutions that meet your unique requirements.
We have a distinguished record for the ongoing development of high-performance fluids for new applications. Available worldwide and backed by global technical support, our products excel in applications such as automotive, biodegradable and industrial
