TH8923B

TH8923B - "Method for the Preparation of Ethyline Polymer Compositions" A method for preparing ethylene polymer compositions.

Info

Publication number: TH8923B
Application number: TH9101000174A
Authority: TH
Inventors: โตชิยูกิทสุตซุย นาย; ทากาชิอูอิดะ นาย; ทสุตซุย Mr Toshiyuki Tsutsui นายโตชิยูกิ; อูอิดะ Mr Takashi Ueda นายทากาชิ
Original assignee: นาย เดชอุดมไกรฤทธิ์
Filing date: 1991-02-13
Publication date: 1999-05-21

Abstract

ได้เปิดเผยถึงวิธีการสำหรับการเตรียมองค์ประกอบเอทธิลีนที่มีความหนาแน่น 0.86-0.94 กรัม/ลบ.ซม.และความหนืดจำกัด(n)เป็น 1-6 dl/g โดยใชแคทาลิสท์โพลีเมอไรเซชั้นโอลีฟินที่ประกอบด้วยสารประกอบโลหะทรานซิชั่นที่มีลิแกนด์ที่มีโครงสร้างไซโคลอัลคาไดเอ็นนิล และสารประกอบออร์แดโนอะลูกมินัมออกซี และยังมีวิธีการสำหรับการเตรียมองค์ประกอบเอทธิลีนโพลีเมอร์ที่มีความหนาแน่น 0.87-0.93 กรัม/ลบ.ซม.และความหนืดจำกัด (n) เป็น 0.5-6 dl/g ด้วย A method for the preparation of ethylene composition with a density of 0.86-0.94 g/cm3 and a limiting viscosity (n) of 1-6 dl/g by catalyst polymer was revealed. Olefin sediments containing transition metal compounds with ligands with a cycloalkadienyl structure. and ordanoaluminum oxy compounds. There is also a method for the preparation of an ethylene polymer composition with a density of 0.87-0.93 g/cm3 and a limiting viscosity (n) of 0.5-6 dl/g.

Claims

1. Method for the preparation of an ethyene polymer composition with a density of 0.87-0.93 g/cm3 and a limiting viscosity (n) of 0.5-6 dl/g, which consists of a process operation. Many steps include Polymerization step (C) in which ethylene and a-olifin polymerize by polymerization catalyst. An olifin [II] containing transition metal (A) consisting of a ligand with a cycloalkadienil scaffold. and organoaluminum oxy compounds (B) to form ethylene copolymer [III] with a density of less than 0.91 g/cm3 and a limited viscosity [n] of 0.5. -6 dl/g and step polymerization (d) in which ethylene polymerization or ethylene polymerization or other a-olifins by using olifin polymerization catalyst [III] containing titanium catalyst element [C] prepared from a titanium compound represented by the formula Ti. (OR)gX4-g (where R is the hydrocarbon group, x is the halogen and 0 <= g <= 4) and is composed of titanium, magnesium and halogens. Organoaluminum (D) and/or organoaluminum oxy compounds[E] are formed to form ethylene copolymer [IV] with higher densities than ethene. Lean copolymer [III] and finite viscosity [n] are 0.5-6 dl/g where the (c) and (d) polymerization steps are performed respectively. In such a way that step (d) was performed with ethylene copolymer. [III] obtained in step (c) that was previously performed or step (c) was performed with the ethylene polymer [IV] obtained in step (d) ) that has been performed before This gives the ethylene copolymer [IV] a volume of 10-1000 parts by weight based on 100 parts by weight of the ethylene copolymer [III].

Method for the preparation of the ethylene polymer composition according to claim 1, where the transition metals of the transition metal compound(A) are zirconium, titanium, hafnium, chromium or vana. diem

3. Method for preparing the ethylene polymer composition according to claim 2, where the polymerizations (c) and (d) are performed in the order that the steps (d) is processed with the ethylene polymer [III] obtained in step (C) which was preceded by

4. Method for the preparation of the ethylene polymer composition according to claim 2, where the amount of ethylene copolymer [IV] in the polymerization step Section (d) is 20 -500 parts by weight while the amount of ethylene polymer[III] obtained in the polymerization step (c) is 100 parts by weight