摘要:
An Alpha -olefin is polymerized with another monomer through the use of a catalyst system prepared by combining: (I) a solid composition prepared by milling titanium trichloride in the presence of modifier, which is a halohydrocarbon, a silicon compound represented by the general formula SiXm'' Y4 m'' , where X'' is a halogen, Y'' is hydrogen, an alkyl group, an aryl group, an aralkyl group, an alkaryl group, or an alkoxyl group, and m is zero or the integer 1, 2, 3, or 4 (exclusive of SiH4), or a halogen compound of a specific metal; (II) an organoaluminum compound; and (III) a cycloheptatriene compound, including salts of tropylium.
摘要:
A COMPONENT OF AN OLEFINE POLYMERISATION CATALYST IS PREPARED BY THE REACTION BETWEEN ALUMINUM AND TITANIUM TETRACHLORIDE PREFERABLY UNDER REFLUX CONDITIONS IN THE PRESENCE OF ALUMINUM CHLORIDE. THE PRODUCT HAS THE APPROXIMATE EMPIRICAL FORMULA ALTI3CL12 AND WHEN BALLMILLED FORMS A HIGHLY ACTIVE POLYMERISATION CATALYST IN COMBINATION WITH AN ORGANO-ALUMINUM COMPOUND.
摘要:
A HIGH MOLECULAR COMPOSITION COMPRISING A HIGH MOLECULAR SUBSTANCE CONTAINING ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL SULFIDE COMPOUNDS AS AN ANTISTATIC AGENT, SAID COMPOUNDS BEING EXPRESSED BY THE FOLLOWING GENERAL FORMULAS A AND B:
(A) R1.S.R2.A(R3-O)NZ
(WHEREIN R1 REPRESENTS A HYDROCARBON RADICAL HAVING 622 CARBON ATOMS; R2 AND R3 EACH REPRESENTS A HYDROCARBON RADICAL HAVING 1-4CARBON ATOMS; A REPRESENTS OXYGEN OR NITROGEN, AND, IN CASE A REPRESENTS NITROGEN, SAID GENERAL FORMULA IS REPRESENTED BY
R1-S-R2-N((-R3-O)N-Z)2
N REPRESENTS AN INTEGER IN THE RANGE OF 0-100; AND Z REPRESENTS HYDROGEN OR COR4 WHEREIN R4 REPRESENTS A HYDROCARBON RADICAL HAVING 1-22 CARBON ATOMS); AND
R1-SO-R2-O-(R2-O)N-H
(WHEREIN R1 REPRESENTS A HYDROCARBON RADICAL HAVING 622 CARBON ATOMS; R2 AND R3 EACH REPRESENTS A HYDROCARBON RADICAL HAVING 1-4 CARBON ATOMS; AND N REPRESENTS AN INTEGER IN THE RANGE OF 0-100).
摘要:
Ethylene polymers are crosslinked in the absence of crosslinking agents by working the normally solid olefin polymer, e.g., polyethylene, at temperatures just above the melting point of the polymer and at higher than normal shear rates, e.g., greater than 3,000 sec 1.
摘要:
CRUDE AMORPHOUS POLYOLEFINS, BY-PRODUCTS OF POLYOLEFIN PRODUCTION, CONTAIN QUANTITIES OF CATALYST RESIDUES INCLUDING DISCOLORING AGENTS SUCH THAT THE CRUDE MATERIAL IS DARK, HIGHLY VISCOUS-TO-SOLIDS, FLAMMABLE AND CORROSIVE WASTE. BY TREATING THE CRUDE PRODUCT IN A LIQUID TWOPHASE PURIFICATION PROCESS, THE AMORPHOUS POLYOLEFIN IS SEPARATED AND RECOVERED AS A USABLE, SAFE-TO-HANDLE, ESSENTIALLY COLOR FREE, MATERIAL. THE CATALYST RESIDUE ALSO IS RECOVERED.
WHERE R IS A GROUP CONTAINING A CYCLIC HYDROCARBON HAVING 5 TO 20 CARBON ATOMS, X IS A HALOGEN ATOM AND M IS AN INTEGER FROM 1 TO 3, ARE MIXED WITH ORGANOALUMINUM COMPOUNDS TO MAKE CATALYSTS USEFUL FOR HOMOPOLYMERIZING OR COPOLYMERIZING ALPHA-MONOOLEFINS IN SOLUTION, IF DESIRED WITH A POLYENE SUCH AS A CONJUGATED OR NON-CONJUGATED DIENE. EXAMPLE OF THE VANADIUM COMPOUNDS ARE VANADYL TRICYCLOHEXOXIDE, MONOCHLOROVANADYL DICYCLOHEXOXIDE, VANADYL, TRIBORNYLOXIDE AND MONOCHLOROVANADYL DINORBORNYLMETHOXIDE. CONJUGATED DIENES HAVE LESS RETARDING EFFECT ON THE CATALYST THAN ON CONVENTIONAL CATALYST.
摘要:
A process for the polymerization of cyclopentene with ringopening, in which cyclopentene dissolved in an inert organic solvent is polymerized in the presence of a catalyst, characterized in that an organometallic mixed catalyst of A. A MOLYBDENUM, TUNGSTEN OR TANTALUM SALT, B. TERTIARY BUTYL HYPOHALITE, C. AN ORGANIC ALUMINUM COMPOUND IN THE MOLAR RATIO OF A : B : C AS 1 : 0.1 TO 5 : 0.8 TO 15 IS USED.