Additives antistatic chemicals

Obviously, use of such databases often fails in case of interaction between additives. As an example we mention additive/antistat interaction in PP, as observed by Dieckmann et al. [166], In this case analysis and performance data demonstrate chemical interaction between glycerol esters and acid neutralisers. This phenomenon is pronounced when the additive is a strong base, like synthetic hydrotalcite, or a metal carboxylate. Similar problems may arise after ageing of a polymer. A common request in a technical support analytical laboratory is to analyse the additives in a sample that has prematurely failed in an exposure test, when at best an unexposed control sample is available. Under some circumstances, heat or light exposure may have transformed the additive into other products. Reaction product identification then usually requires a general library of their spectroscopic or mass spectrometric profiles. For example, Bell et al. [167] have focused attention on the degradation of light stabilisers and antioxidants... 

Liquid Fabric Softeners. The principal functions of fabric softeners are to minimize the problem of static electricity and to keep fabrics soft (see Antistatic agents). In these laundry additives, the fragrance must reinforce the sense of softness that is the desired result of their use. Most fabric softeners have a pH of about 3.5, which limits the materials that can be used in the fragrances. For example, acetals cannot be used because they break down and cause malodor problems in addition, there is the likelihood of discoloration from Schiff bases, oakmoss extracts, and some specialty chemicals. Testing of fragrance materials in product bases should take place under accelerated aging conditions (eg, 40°C in plastic bottles) to check for odor stabiUty and discoloration. 

ADDITIVES REQUIRED UV [] SUP [] ANTIOX [] FLAME RET [] ANTISTAT [] OTHER [] SPECIAL APPLICATION FDA [] NONTOXIC [] USDA [ ] TOY [ ] CHEMICAL RESISTANT (]... 

Examples of applications determined mainly by chemical properties of the compounds employed are found among resin hardeners 504, flocculants 505, - - com-plexants 506,and ionamines 507, " while the use of additives for lubricant oils and antistatic agents- - 508-510 is more markedly based on physicochemical behavior. 

Another advantage of the silicon oxide network is that it can be modified in various ways as shown in Fig. 18.2. One way is co-condensation of the most nsed tetramethylol silanes with other kinds of metal oxides. Another way is cohydrolysis and co-polycondensation with snbstitnted trimethoxy silanes where this substituent is, for example, a long alkyl chain for hydrophobation, an organic portion with polar structures for antistatic effects, a fluorocarbon for the release of water, oil and soil or a bioactive group. The easiest method of modification is the physical one, the simple addition of the desired chemicals. They are then incorporated in the porous network of the metal oxides and are released in a more or less controlled way. 

Chemical additives on the surfaces of container closure system component fabrication machinery, such as mould release agents, antistatic and antislip agents, etc. 

PE/Other Commodity Polymer Blends PE s are frequently used as impact modifiers for a variety of other thermoplastics. For example, addition of either PE, CPE, or CSR to PVC improved its moldability, stability, impact strength and chemical resistance [Matsuda et al, I960]. Blends of PO/PVAl were developed to improve the antistatic properties [Minekawa et al, 1969]. LDPE was blended with poly(2-ethyl-2-oxazoline) (PEOX) for improved adhesion, e.g., to PET [Hoenig et al, 1984]. Blends of PE, PP, PS or their copolymers with ethylene-fluorinated vinyl ether copolymer... 

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