Bis-stearamide wax

Primary amides for slip/antiblock agents in LDPE, LLDPE, PP films. Lubricants can tie up catalyst residues, usually calcium stearate stearates and ethylene bis-stearamide waxes are sometimes used in processing of fine powdered polyolefins erucamides preferred for films and mouldings fluoropolymer alloys give better use of machinery methacrylate-reactive silicones... 

Applications The method is in use for the determination of water extractable organics in PA6 and PA4.6, and for alkane extraction of waxes from HDPE (in nitrogen atmosphere to prevent oxidation) [156]. Ethylene-bis-stearamide (EBA) can be extracted from ABS in 30 min using intermittent extraction in this case quantitative Soxhlet extraction was not possible. Nelissen [157] has used intermittent extraction with MTBE for the analysis of the flame retarder system of Tribit 1500 GN30. 

Nopcowax. [Henkel] Ethylene bis-stearamide synthetic wax, binder, thickener fm latex fmmulation, coatings, adhesives used in powd. metallurgy as intmnal lubricant... 

Fatty amide waxes (erucic, oleic, ethylene-bis-stearamide)... 

Polystyrene andABS. Average lubricant concentration 0.35 percent. One to 3 percent mineral oil, butyl oleate or stearate as internal lubricants for melt flow 0.1 to 0.5 percent stearic acid, Zn stearate, or fatty amides for mold release. Polyethylene wax, montan wax, ethylene-bis-stearamide, or glycerol monostearate for ABS. 

Mold release agents Prevent adhesion between two surfaces (e.g., sticking of polymer and metal mold) Derivatives of fatty acids. Montan wax, silicones, diethylene glycol monostearate, ethylene bis (stearamide)... 

Slip agents often consist of amide waxes with about 22 carbon atoms, containing a cA-double bond to prevent them from crystallising. Erucamide, oleamide, stearamide and ethylene bis-stearamide are preferred. They do not usually perform very well as antiblocking agents, although a few substances can perform both roles. 

Lubricants can be fatty acids such as stearic acid or hydroxy stearic acid, esters such as stearates, amides or alcohols. Copolymers of styrene and an acrylate can be used. Paraffin and the montan waxes, ethylene bis-stearamide (EBS, or amide wax ), the oxidised polyethylene waxes, and other polyolefin waxes are also employed. 

A few companies have reduced their commitment to polymer additives. The Swiss company Lonza places increasing emphasis on pharmaceutical intermediates in its European operations, but also makes oleochemicals for plastics. Other additive products include plasticisers, both general-pm tose types and linear phthalates, together with polymeries and trimellitates. It is a leading supplier in the US of polymer lubricants such as EBS (ethylene bis-stearamide) and other amide waxes. First half profits overall were down 16% in 2004. Research and development expenditure in 2003 amoimted to US 65 M. A new CEO, Stefan Borgas, has been appointed from BASF. 

A general class of lubricants is alkyl acids and their derivatives (esters, amides, alcohols, and metallic salts). Esters, including fatty esters, polyol esters, and wax esters, are reasonably compatible with PVC. They are also used in polystyrene and acrylic polymers. High-molecular-weight esters are used as external lubricants, and low-molecular-weight esters are used as internal lubricants. Simple primary fatty amides possess unique mold-release properties and are used as slip and mold-release agents for polyolefins and other polymers. The more complex bisamides, such as ethylene bis-stearamide, offer mold release as well as internal and external lubricity in materials such as PVC and ABS. Fatty alcohols are used primarily in rigid PVC. They are used as both internal and external lubricants, and they are useful when clarity is important. 

In view of the above, it is apparent that specific recommendations for lubricating particular polymers are difficult to make and may be misleading. Nevertheless, it is common practice to use the lubricants shown in Table 1 in the polymer systems indicated. Fatty amides, waxes and silica compounds are often used as slip additives in polyolefins. Typical examples are oleamides, bis stearamides and stearic acid esters. 

Stearamide OEA Stearic acid diethanolamide Stearoyi diethanolamide N,N-Bis(hydroxyethyl)octadecanamide N,N-Bis(2-hydroxy-ethyl)octadecanamide N,N-Bis(2-hydroxyethyl)stear-amide N,N-Bis(p-hydroxyethyl)stearamide Clindroi 868 Clindrol 200-S Cyclomide SD Diethanoiamine stearic acid amide Diethanolstearamide Onyxol 42 Schercomid ST Stearamide DEA Stearic acid diethanolamide Stearic diethanolamide Stearoyi Diethanolamide N-Stearoyi diethanolamine Unamide S. Thickener, emulsifier for mineral and vegetable oils, microcrystalline wax. Heterene Taiwan Surfactants. 202-280-1... 

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