Polyolefins composition

The 2-imino-4-thiazolines may be used as ultraviolet-light stabilizers of polyolefin compositions (1026). 2-Aminothiazole improves adhesive properties of wood to wood glue (271). Cbmpound 428 exhibits antioxidant properties (Scheme 242) (1027). Ammonium N-(2-thiazolyl)dithio-carbamate (429) is a bactericide and fungicide used in industrial products such as lumber, paint, plastics, and textiles (1037). Compound 430 is reported (1038) to form an excellent volume of foam coating in aluminum pans when ignited with propane. 

E. F. McCarthy, Talcj Polyolefin Composites fior Exceptional Cost Pefiormance in Automotive Applications, Schotland Business Research, Princeton, N.J.,... 

A material, such as (a) a terpolymer of propylene, ethylene and butene-1, (b) a polyolefin composition, which includes about 31 to 39% of a copolymer of propylene and ethylene and about 58 to 72% of a terpolymer of propylene, ethylene and butene-1 or (c) a polyolefin composition, which includes about 30 to 65% of a copolymer of propylene and butene-1 and about 35 to 70% of a copolymer of propylene and ethylene, is irradiated and extruded through a die in the presence of a physical expanding agent and a cell nucleating agent to produce a structure having a density, which is at least 10 times less than the initial density of the material. The foam articles exhibit improved flexibility and low temperature toughness compared to conventional propylene polymer materials. 

Patent Number EP 585148 A1 19940302 ULTRA LOW DENSITY POLYOLEFIN FOAM HAVING A DENSITY OF ABOUT 0.6 TO 1.5 POUNDS PER CUBIC FOOT, FOAMABLE POLYOLEFIN COMPOSITIONS AND PROCESS FOR MAKING THE SAME Rogers J E Kisner R D Astro-Valcour Ine. 

Conductive composites are obtained when powdered metal fillers or metal-plated fillers are added to resins. These composites nave been used to produce forming tools for the aircraft industry. Powdered lead-filled polyolefin composites have been used as shields for neutron and gamma radiation, and metal-filled plastics have been used to prevent interference from stray electrons (EMI). 

Rogers J-V, Kisner RD (1993) Ultra low density polyolefin foam, foamable polyolefin compositions and process for making same. US Patent 5,290,822... 

Hitachi Cable Ltd., Fire-resistant electrically insulating polyolefin compositions, Japanese Patent 04253748, 1992. 

Seltzer R, Ravichandran R and Patel R A (1989) Polyolefin compositions stabilized with long-chain N,N-dialkylhydroxylamines, Eur Pat Appl EP 323 409 Chem Abstr (1990) 112 21791. 

Process temperature, as well as waste polyolefin composition and type of catalyst used are then the most important process parameters. It is evident that a process temperature below 500°C is the most suitable range for refinery fractions while 600°C and higher are appropriate for olefins production. 

During recent years an increasing evidence has accumulated that discernible types of centers exist in Z—N catalysts, particularly in their heterogeneous versions. The centers may differ in their kp values, monomer coordination abilities, stereospecificities and reactivities in copolymerization. This concept can explain — at least qualitatively — wide MWD of polyolefins, composition heterogeneity of copolymers and specific responses of the catalyst performance to electron-donor additives. The origin of the differently behaving centers should be seen in a diversity of chemical processes... 

Japanese Patent 61,204,244, Preparation of a Polyolefin Composition With High Voltage Resistance by Blending a Polyolefin With Mica and a Foaming Agent. 

Balatinecz, M. I. Khavkine, S. Law, and V. Kovac. Properties of polyolefin composites with blends of wood flour and coal ash. In Fifth International Conference on Woodfiber-Plastic Composites, Forest Products Society, Madison, WI, May 26-27,1999, pp. 235-240. 

M. Sain, S. Law, F. Suhara, and A. Bouiloux. Interface modification and stiffness correlation of natural fibre—polyolefin composite products. In Wood fibre Polymer Composites Symposium. Application and Trends, Bordeaux, France, March 27-28, 2003. 

Cellulose-polyolefin composite pellets, 89 Cellulosic reinforced plastic composite, 89 Center point load, or concentrated load (3-pt load), 244, 252, 264 CertainTeed Corporation, 58, 79, 90 Cesa-mix 8468, 174 Cesa-mix 8611, 174 Chain breaking antioxidants, 526 Chain reaction, 526 Charpy impact resistance, 73 Chemark UV-234, 535 Chemark UV-326, 535 Chemical composition of fillers, 125, 133-154... 

Used in conjunction with certain metal chelate compounds in rendering polyolefin compositions degradable... 

Denault J, et al. Wood and flax fiber polyolefin composites. Automotive Composites Conference, conference proceedings. Society of Plastics Engineers 2006. 

Fundamental research creates important knowledge that the industry need for new apphcations and for any further needs arise by the community.Open-ended exploratory research is the first step that can lead to the social and economic benefits. The time fine for the production of a new polyolefin material is shown in Fig. 1.3, which starts from (i) research, (ii) new polyolefin material or polyolefin composite, (iii) production, (iv) high production, (v) mature production, and (vi) cost reduction. 

For polyolefin composites, challenges include many variables such as aspect ratio of the fillers, orientation, and the interface. Controlling these properties of the additives can be an easy way to control and tailor the needed properties. 

US 4640933 A, Expandable polyolefin compositions and preparation process utilizing isobutane blowing agent... 

POCs are composed of two or more phases. The matrix is the polyolefin with a continuous phase that surrounds the other phases. The filler could be a reinforcement material for the entire composite. The properties of the polyolefin composite are dependent upon the filler type (organic or inorganic), geometry (fiber, flake, particulate, or sphere), the type of matrix, and the size of filler (micro or nano). Figure 6.1 depicts a simple schematic classification of a polyolefin composite [28]. 

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