Abstract:
The invention relates to anionically polymerized impact polystyrene which is characterized in that it has a melt volume flow rate MVR of at least 8 cm /10 min which is measured in accordance with EN ISO 1133 at a test temperature of 200 DEG C and with a nominal load of 5 kg.
Abstract translation:阴离子聚合,高抗冲聚苯乙烯,其特征在于它具有的熔体体积流动速率MVR,根据EN ISO 1133在至少8cm <3> / 10分钟的200℃的试验温度和5kg额定负载测量。
Abstract:
The invention relates to partially aromatic, partially crystalline thermoplastic polyamide moulding compounds containing: A) between 40 and 100 wt. % of a copolyamide consisting of a1) between 30 and 44 mol % of units derived from terephthalic acid, a2) between 6 and 20 mol % of units derived from isophthalic acid, a3) between 42 and 49.5 mol % of units derived from hexamethylene diamine, and a4) between 0.5 and 8 mol % of units derived from aromatic diamines having between 6 and 30 C atoms, the mol percentage of constituents a1) to a4) amounting to 100; B) between 0 and 50 wt % of a fibrous and particulate filler; C) between 0 and 30 wt. % of a rubber-elastic polymer; and D) between 0 and 30 % of other additives and auxiliary products, the weight percentage of constituents A) to D) amounting to 100.
Abstract:
A continuous anionic polymerisation or copolymerisation process of styrene or diene monomers with alkali metal alkyl as polymerisation initiator is carried out in the presence of a metal alkyl or aryl of an at least bivalent element as reaction speed regulator, preferably in non-isotherm conditions and without a back admixture in a pipe or pipe bundle reactor. A metal alkyl or aryl A of formula R M and a metal alkyl or aryl B of formula R nM in a molar ratio between B and A from 0.1:1 to 500:1 are used. In the formulas, M is Li, Na or K; R is hydrogen, C1-C20-alkyl or C6-C20-aryl or C7-C20-alkyl-substituted aryl; M is an n-valent element of groups 2a, 2b or 3a of the periodic table of elements; and R is hydrogen, halogen, C1-C20-alkyl or C6-C20-alkyl. Also disclosed is a special initiator for the anionic polymerisation which does not contain any Lewis bases. 00000
Abstract:
The invention relates to a porous organo-metallic skeleton material for accommodating at least one substance. The skeleton material contains at least one at least bidentate organic compound that is coordinatively bound to at least one metal ion, whereby the skeleton material has, at least in part, pores that contain a polymer, which is suited for adsorbing a substance. The invention also relates to a method for producing the skeleton material, to a method for accommodating at least one substance by the skeleton material, and to the use of the skeleton material, in particular, for storing, separating, controlled release or chemically converting an accommodated substance.
Abstract:
A method for the production of impact-resistant moulding materials by anionic polymerization of vinyl aromatic monomers in the presence of rubber in a continuously through-flown reactor cascade consisting of at least two reactors. The vinyl aromatic monomers are fed to the reactors of the reactor cascade in partial flows and an anionic initiator and rubber are fed to at least the first reactor. The reactor cascade consists of backmixed reactors.
Abstract:
The invention relates to a porous organo-metallic skeleton material for accommodating at least one substance. The skeleton material contains at least one at least bidentate organic compound that is coordinatively bound to at least one metal ion, whereby the skeleton material has, at least in part, pores that contain a polymer, which is suited for adsorbing a substance. The invention also relates to a method for producing the skeleton material, to a method for accommodating at least one substance by the skeleton material, and to the use of the skeleton material, in particular, for storing, separating, controlled release or chemically converting an accommodated substance.
Abstract:
Preparation of copolymer S/B comprises anionic polymerization of styrol monomer and diene monomer in the presence of an alkalimetalorganyls and an aluminumorganyl polymer and in the absence of Lewis base, where the molar ratio of aluminum to alkalimetal is 0.75:1 to 0.95:1. Independent claims are included for: (1) the preparation of blockcopolymer containing at least one copolymer blocks S/B and at least a homopolymerblock S from styrol monomer, or at least a homopolymerblock B from diene monomer, comprising preparing the copolymer block S/B and before or after the above step styrol monomer is polymerized to homopolymerblock S, or diene monomer is polymerized to the homopolymerblock B; (2) a copolymer obtained from the process; and (3) a blockcopolymer obtained from the process.