Plastics additives polyolefins

Plastics Additives. Many claims have been made for the use of nickel chemicals as additives to various resin systems. By far the most important appHcation is as uv-quenchers in polyolefins (173,174). Among the useful nickel complexes in these systems are dibutyldithiocarbamate nickel [13927-77-0], nickel thiobisphenolates, and nickel amide complexes of bisphenol sulfides (175). The nickel complex of... 

Polyolefins. Interest has been shown in the plasticization of polyolefins (5) but plasticizer use generally results in a reduction of physical properties (12), and compatibiHty can be achieved only up to 2 wt %. Most polyolefins give adequate physical properties without plasticization. There has been use of plasticizers with polypropylene to improve its elongation at break (7) although the addition of plasticizer can lower T, room temperature strength, and flow temperature. This can be overcome by simultaneous plasticization (ca 15 wt % level) and cross-linking. Plasticizers used include DOA. 

Chlorinated polyether is formulated particularly for products requiring, good chemical resistance. Other materials exhibiting good chemical resistance include all of the fluorocarbon plastics, ethylpentenes, polyolefins, certain phenolics, and diallyl phtha-late compounds. Additives such as fillers, plasticizers, stabilizers, colorants, and type catalysts can decrease the chemical resistance of unfilled plastics. Certain chemicals in cosmetics will affect plastics, and tests are necessary in most cases with new formulations. Temperature condition is also very important to include in the evaluation. Careful tests must be made under actual use conditions in final selection studies. 

Thilrmer A (1998) Acid scavengers for polyolefins. In Plastics additives, an A-Z reference, Pritchard G (Ed), Chapman Hall London, pp 43—48. 

Considerable variation is, of course, possible among different grades of the same polyolefin, and useful modifications are obtained by copolymerization, blending with other polymers, and compounding with various additives. As with other crystalline plastics, the polyolefins are not benefited by addition of liquid plasticizers. Such "foreign" molecules are generally not accepted by the crystal lattice, or, if incorporated, cause excessive weakening. 

Plastics additives guidebook for polyolefins, supplier product guide. Chemtura Corp. 2007. 

Zweifel, H. (2001).Plastic additives Handbook, Chl4, Crosslinking and Controlled Degradation of Polyolefin, ISBN 3- pp.723, 446-19579-3, Switzerland... 

Synonyms N,N -Bis (3,5-di-t-butyl-4-hydroxyhydrocinnamoyl) hydrazine Uses Antioxidant for polyolefins, polyesters, polyamides, PVC, PS, rubbers, cellulosics antioxidant/stabilizer for food-grade polymers in food-pkg. adhesives Regulatory FDA 21CFR 175.105, 178.2010 Manuf./Distrib. Ciba Spec. Chems./Plastic Addit. http //www.cibasc.com, Fairmount Trade Name Synonyms BNX MD-1024 [Mayzo http //www.mayzo.com], Irganox MD 1024... 

Uses UV absorber, stabilizer for plastics, coatings, polyolefins, EPDM, SAN, acrylic, flexible PVC, cold-cured polyesters, PU, dyes Manuf./Distrib. Aldrich http //www.sigma-aidrich.com] ChemService http //WWW. chemservice. com Trade Name Synonyms Cyasorb UV 5357 [Cytec lnd./Polymer Addit.] Eversorb 75 [Everlight Chem. Industrial http //www.ecic.com]] Lowilite 27 [Great Lakes http //www.greatiakeschem. com] Runsorb 327 [Runtec http //www.runtec-chem.com]] Seesorb 702 [Shipro Kasei Kaisha http //www.shipro.co.jp]... 

Uses Color and m.w. stabilizer, antioxidant, melt flow aid for polymer processing (polyolefins, polyesters, elastomers, styrenics, engineering thermoplastics), adhesives, coatings antioxidant, UV stabilizer for polyolefins, food-grade polymers Regulatory FDA 21CFR 178.2010 Manuf./Distrib. Aldrich http //www.sigma-aidrich.com, GE Spec. http //www.ge.com/speciaitychemicais Trade Name Synonyms AO-2 f[Ciba Spec. Chems./Plastic Addit. http //www.cibasc.com]-, Doverphos S-680 [Dover http //www.doverchem.com]-, Doverphos S-686, S-687 t[Dover... 

Uses Processing stabilizer, sec. antioxidant for polymers incl. polyolefins, polyesters, polyamides, ABS, PS, polybutylene, PBT, PVC, nitrile barrier resins, food-contact polymers peroxide decomposer for plastics mfg. Reguiatory FDA cleared as indirect food additive Manuf./Distrib. Clariant http //www.ciariant.com, http //WWW. ciariant-northamerica. com Trade Name Synonyms Alkanox 24-44 [Great Lakes http //www.greatiakeschem. com] Phosphite 1 t[Ciba Spec. Chems./Plastic Addit. http //WWW. cibasc. com]... 

Montell Polyolefins, Functional Chemicals, Three Little Falls Centre, 2801 Centerville Road, PO Box 15439, Wilmington, DE 19850-5981, USA Montell Polyolefins, Woluwe Garden, Woluwedal 24, B-1932 Zaventem, Belgium tel +32-2-71 5-8164 fax +32-2-715-8264 Morton International Inc, Morton Plastics Additives, 2000 West Street, Cincinnati, OH 45215-3431, USA tel +1-513-733-2100 fax +1-513-733-213 3 Multibase Inc, 3835 Copley Road, Copley, OH 44321, USA tel +1-216-867-5124 fax +1-216-666-7419... 

EPDM and EPR are used to modify polyolefins, primarily in the automotive industry. The largest volume is in automotive PP bumpers. This application is gradually being replaced by impact-resistant polymers produced by metallocene technology, providing better performance and economics. DuPont Dow and Exxon are leading producers in North America. When used with plastics such as nylon, PET, and PBT, the EPDM and EPR are often modified with a functionalized monomer to allow them to react with the plastic. Additionally, the shell of a core-shell modifier can also be modified to include a reactive group. Suppliers of fimctionalized modifiers include Rohm Haas, AtoFina, Shell, and Exxon. 

During the processing of amorphous plastics and polyolefins, there is an additional risk of fusion or deformation of the moulded item from the hot nozzle face. 

This chapter has provided a general summary of fatigue concepts, measurement techniques or methods, data presentation, and theory. It was meant to be introductory only and additional details should be obtained from the literature cited in this chapter [24-26], Chapters Styrenic Plastics, Polyether Plastics, Polyester Plastics, Polyimide Plastics, Polyamide Plastics (Nylons), Polyolefins and Acrylics, Thermoplastic Elastomers, Fluoropolymers, High-Temperature Polymers contain hundreds of plots of fatigue-related data on hundreds of different plastics. 

Uses Emulsifier, lubricant for hair rinses hand modifier for textiles spreading agent in paste waxes and polishes antistat and emulsifier for SR and polyolefins Properties Off-wh. waxy flake sp.gr. 0.94 m.p. 41-43 C Alrowet D-65 [Ciba Spec. Chems./Plastic Addit.j Chem. Descrip. Dioctyl sodium sulfosuccinate ionic Nature Anionic... 

Tung J-F, Wiles D M, Cermak B E, Gho J G and Hare C W J, Totally degradable polyolefin products . Proceedings of the Fifth International Plastics Additives and Modifiers Conference, paper 17, Prague, 1999. 

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