摘要:
Solid component of a catalyst for the synthesis of elastomeric Ethylene-Propylene copolymers typically amorphous, basically consisting of a Titanium compound supported on a solid component mainly consisting of MgCl₂, prepared by a process which comprises putting a solution (I), basically consisting of an organometallic compound of Aluminium diluted with aliphatic hydrocarbons, in contact with a solution (II) containing
an anhydrous Magnesium halide in a composition of solvents selected from halohydrocarbons and aromatic hydrocarbons and relative mixtures, in the presence of an Aluminium trihalide; a tetravalent Titanium compound having general formula Ti(OR) 4-n X n .
(a) 60-90% in moles of ethylene; (b) 1-30% in moles of an a-olefin CH 2 =CHR, where R is an alkyl radical having from 2 to 6 carbon atoms; (c) 0-20% in moles of propylene;
the sum of percentages (a), (b) and (c) being equal to 100, and the crude product having an ultimate tensile stress of between 10 and 200 kg/cm 2 .
摘要翻译:乙烯的弹性共聚物包括:(a)60-90%(摩尔)乙烯; (b)1-30%摩尔的α-烯烃CH2 = CHR,其中R是具有2至6个碳原子的烷基; (c)丙烯为0-20%(摩尔); 百分比(a),(b)和(c)的总和等于100,粗产物的极限拉伸应力在10-200kg / cm 2之间。
摘要:
Ethylene-propylene elastomer copolymers with a propylene content of between 20 and 55% by weight, produced with a polymerization process in suspension of liquid monomer, without final washing, characterized by a controlled molecular weight distribution.
摘要:
Catalytic component for the polymerization of ethylene with propylene prepared by:
a) impregnation of an inert support with a solution of a compound of Vanadium having an oxidation state of between 3 and 5; b) subsequent treatment with a solution of a compound having general formula (I) R n AlX m wherein R is a C₁-C₂₀ alkyl radical, X is a halogen, n + m = 3 , and m is an integer between 0 and 2, the molar ratio between Aluminium in step (b) and Vanadium in step (a) being from 1/1 to 6/1.
摘要翻译:通过以下方法制备乙烯与丙烯聚合的催化组分:a)用氧化态为3至5的钒化合物的溶液浸渍惰性载体; b)随后用具有通式(I)RnAlXm的化合物的溶液进行后处理,其中R是C1-C20烷基,X是卤素,n + m = 3,m是0和2之间的整数, 步骤(b)中的铝与步骤(a)中的钒的比例为1/1至6/1。