摘要:
The present invention relates to a heterophasic polypropylene composition with a high melt flow rate for processability, a good stiffness and an improved compression performance. These compositions may be employed for the production of moulded articles, in particular injection moulded articles such as thin-walled plastic cups. Furthermore, the invention relates to a process for preparing the inventive polymer compositions.
摘要:
An environmentally beneficial, flame retardant, halogen free polymer composition, which on a total of 100 % by weight comprises:
5-40 % by weight of a polar ethylene copolymer; 5-40 % by weight of a polypropylene (PP) polymer; 5-40 % by weight of an ethylene-propylene rubber (EPR) ; 1-10 % by weight of silicone; 20-40 % by weight of an inorganic filler which is a compound of a metal of Group IIA of the Periodic Table of Elements, excluding hydroxides and hydrated compounds.
An electric cable is also disclosed which comprises a conductor and is provided with a coating and/or sheathing of a polymer composition as defined above.
摘要:
Use of a Ziegler-Natta procatalyst which contains a trans-esterification product of a lower alcohol and a phthalic ester for the production of reactor grade thermoplastic polyolefins with improved paintability, characterized in that the procatalyst used has been prepared by a) reacting a spray crystallized or emulsion solidified adduct of MgCl 2 and a C 1 -C 2 alcohol with TiCl 4 b) reacting the product of stage a) with a dialkylphthalate of formula (I)
wherein R 1 ' and R 2 ' are independently at least a C 5 alkyl under conditions where a transesterification between said C 1 to C 2 alcohol and said dialkylphthalate of formula (I) takes place to form the internal donor c) washing the product of stage b) or d) optionally reacting the product of step c) with TiCl 4 .,
as well as reactor grade thermoplastic polyolefins prepared by using the above described Ziegler-Natta procatalyst, use of these reactor grade thermoplastic polyolefins, molded articles produced from them and a method to improve paintability and/or surface quality of reactor grade thermoplastic polyolefin resin articles.
摘要:
The present invention concerns an improved polyolefin composition containing a heterophasic propylene copolymer, a polymeric nucleating agent and low-density polyethylene.