Braskem America Inc. | Date: 2014-03-14
Propylene-based polymer resins and related compositions and processes are disclosed. The propylene polymer resins have high isotacticity and moderately high xylene soluble content. The polymer resins provide extruded sheets suitable for thermo-forming that exhibit both sag resistance and ease of draw.
Braskem America Inc. | Date: 2011-07-19
Fabricated articles are disclosed which comprise a polypropylene impact copolymer. The propylene impact copolymer composition comprises from 60 to 90 percent by weight of the impact copolymer composition of a matrix phase, which can be a homopolymer polypropylene or random polypropylene copolymer having from 0.1 to 7 mol percent of units derived from ethylene or C
Braskem America Inc. | Date: 2013-12-23
The present disclosure relates to a class of impact copolymer polypropylene (ICP) compositions exhibiting the advantageous combination of excellent tiger (flow) marking performance in large/long molded parts, very low gels count and exceptional mold flowability (high MFR) despite the high viscosity ratio (e.g., >4) between rubber and propylene based matrix phases. Furthermore, it has been surprisingly found that the inventive compositions are associated with a low gels count even when using a quite coarse mesh wire screen, e.g., 60 mesh wire screen, independent of screw type e.g., twin or single screw. Finally, the inventive compositions exhibit significantly reduced the levels of volatiles, and excellent stiffness-impact balance used as standalone materials or in filled compounds. The significantly reduced number of large gels leads to excellent surface appearance and paintability of the molded parts. The composition of the present disclosure is made with a bulk/gas reactor process (i.e., non-slurry/non-solvent process) that has the advantage of process simplicity, process efficiency and simplicity of compositional structure relative to the complexity in structure and process of making of compositions in the prior art.
Braskem America Inc. | Date: 2011-12-29
The invention provides a compression blow formed article formed from a composition comprising at least the following: 1) a polypropylene homopolymer and 2) a propylene-based polymer.
Mendelson M.,Braskem America Inc.
Society of Plastics Engineers - 27th Annual Blow Molding Conference, ABC 2011 | Year: 2011
This presentation will include a discussion of: • Green-PE is a true biopolymer, derived from sugarcane based ethanol • Green-PE has a very favorable carbon footprint, and it can be recycled just like petrochemical PE • Green-BE can be processed in current converting equipment. Source