摘要:
Disclosed are a catalyst for polymerizing olefins containing a solid catalyst component containing titanium, magnesium and halogen as essential components (component (A)); an organic aluminum compound (component (B)); and a silane compound (component (C)) represented by general formula (1) wherein R1 and R2 independently represent a straight, branched or cyclic saturated aliphatic hydrocarbon group or a silyl group, a method of preparing polyolefins using the catalyst as well as novel trimethoxysilane compounds represented by the general formula (1) in which R1 is a straight saturated aliphatic hydrocarbon group having 2 to 10 carbon atoms, and R2 represents a methyl group. Use of the catalyst enables efficient production of polyolefins having a low molecular weight (MFR>20 (g/10 minutes)), a broad molecular weight distribution (MLMFR/MFR>22) and a high stereoregularity when applied to polymerization of olefins having 3 or more carbon atoms.
摘要:
Disclosed are a catalyst for polymerizing olefins containing a solid catalyst component containing titanium, magnesium and halogen as essential components (component (A)); an organic aluminum compound (component (B)); and a silane compound (component (C)) represented by general formula (1) ##STR1## wherein R.sup.1 and R.sup.2 independently represent a straight, branched or cyclic saturated aliphatic hydrocarbon group or a silyl group, a method of preparing polyolefins using the catalyst as well as novel trimethoxysilane compounds represented by the general formula (1) in which R.sup.1 is a straight saturated aliphatic hydrocarbon group having 2 to 10 carbon atoms, and R.sup.2 represents a methyl group. Use of the catalyst enables efficient production of polyolefins having a low molecular weight (MFR>20 (g/10 minutes)), a broad molecular weight distribution (MLMFR/MFR>22) and a high stereoregularity when applied to polymerization of olefins having 3 or more carbon atoms.
摘要:
A catalyst for polymerization of olefin, which is capable of producing an olefin polymer with high stereoregularity and narrow molecular weight distribution, and which comprises (1) a solid catalyst component essentially containing titanium, magnesium and halogen, 2) an organoaluminum compound, and (3) a contact product of (A) an organometallic compound and (B) an organosilicon compound; and a process for producing a polymer using the above catalyst.
摘要:
A catalyst for producing a polyolefin having a high melting point and a high stereoregularity, which comprises: (A) a solid catalyst component containing titanium, magnesium and halogen, (B) an organic aluminum compound, and (C) an organic silicon compound represented by Formula (1); ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each represents a C.sub.1-3 hydrocarbon group.
摘要:
A catalyst for producing a polyolefin having a high melting point and a high stereoregularity, which comprises: (A) a solid catalyst component containing titanium, magnesium and halogen, (B) an organic aluminum compound, and (C) an organic silicon compound represented by formula (1): ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 each represents a C.sub.1-3 hydrocarbon group.
摘要:
[Object] An object of the present invention is to provide a method for producing an olefin polymer, with which an olefin polymer having good particle properties can be produced in high activity, contamination inside the polymerization vessel, such as a vessel wall or an impeller, can be effectively prevented, and a long-term stable operation is achieved.[Means for Achieving the Object] A method for producing an olefin polymer according to the present invention is characterized by including (co)polymerizing at least one olefin selected from the group consisting of ethylene and α-olefins having 3 to 20 carbon atoms in a polymerization vessel in the presence of (A) a solid catalyst component for olefin polymerization, (B) an aliphatic amide, and (C) an organoaluminum compound.
摘要:
An antigen exposure chamber for quickly performing cleaning and drying with high quality is provided. The antigen exposure chamber of the present invention includes: a cleaning water supply device for supplying cleaning water for cleaning the antigen exposure chamber; cleaning nozzles for jetting the cleaning water supplied from the cleaning water supply device into the antigen exposure chamber and ducts of fan units to clean the antigen exposure chamber and the ducts; a floor surface of the antigen exposure chamber; and an exhaust device provided below the floor surface to exhaust air from the floor surface of the antigen exposure chamber and collect and drain the cleaning water during cleaning.
摘要:
A novel epoxy compound represented by the following general formula (I), and a production process thereof, is provided: Y—(CH2)3—Si(OR1)nR23-n (I) (wherein, Y is represented by any of the following formulas: wherein, R1 and R2 represent alkyl groups having 1 to 5 carbon atoms, n represents an integer of 1 to 3, R3 and R4 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, R5 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a trialkylsilyl group having 1 to 4 carbon atoms, R6 to R12 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, and R13 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a trialkylsilyl group having 1 to 4 carbon atoms or an aryl group).
摘要:
Novel epoxy compounds having imide structures represented by general formula (I) or general formula (II) below, and having an allyl group in the same molecule, as well as a process for their production. (wherein R1 and R2 each represent hydrogen, a C1-6 alkyl group, or a C1-4 trialkylsilyl group) (wherein R3 represents hydrogen, a C1-6 alkyl group, or a C1-4 trialkylsilyl group)
摘要:
Novel epoxy compounds represented by the general formula: (wherein R1 and R2 each represent hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, each R3 may be the same or different and each independently represents hydrogen, alkyl, aryl, aralkyl, alkenyl or fluoroalkyl, and n is 0 or a positive integer), and the general formula: (wherein R3 represents the same groups specified above, R4 represents hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, and n is 0 or a positive integer), and a process for their production.