摘要:
Ethylene copolymers having a density of .gtoreq.0.91 to .ltoreq.0.96 and a melt flow ratio of .gtoreq.22 to .ltoreq.32 are readily produced in a low pressure gas phase process at a productivity of .gtoreq.50,000 pounds of polymer per pound of Ti with a particulate catalyst diluted with an inert carrier material and formed from selected organo aluminum compounds and a precursor composition of the formula:Mg.sub.m Ti.sub.1 (OR).sub.n X.sub.p [ED].sub.qwherein ED is a selected electron donor compound.m is .gtoreq.0.5 to .ltoreq.56n is 0 or 1p is .gtoreq.6 to .ltoreq.116q is .gtoreq.2 to .ltoreq.85R is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, andX is selected from the group consisting of Cl, Br, I, or mixtures thereof.
摘要:
A catalyst formed from selected organo aluminum compounds and a precursor composition of the formulaMg.sub.m Ti.sub.l (OR).sub.n X.sub.p [ED].sub.qwhereinED is a selected electron donor compoundm is .gtoreq.0.5 to .ltoreq.56n is 0 or 1p is .gtoreq.6 to .ltoreq.116q is .gtoreq.2 to .ltoreq.85R is a C.sub.1 to C.sub.14, aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, andX is selected from the group consisting of Cl, Br, I, or mixtures thereof, which catalyst is in particulate form and diluted with an inert carrier material; a process for preparing such catalyst; a process for using said catalyst to readily prepare ethylene homopolymer having a density of about .gtoreq.0.958 to .ltoreq.0.972 and a melt flow ratio of .gtoreq.22 to .ltoreq.32 in a low pressure gas phase process at a productivity of .gtoreq.50,000 pounds of polymer per pound of Ti. Novel polymers and molded articles are prepared.
摘要:
A catalyst formed from selected organo aluminum compounds and a precursor composition of the formulaMg.sub.m Ti.sub.1 (OR).sub.n X.sub.p [ED].sub.qwhereinED is a selected electron donor compoundm is .gtoreq.0.5 to .ltoreq.56n is 0 or 1p is .gtoreq.6 to .ltoreq.116q is .gtoreq.2 to .ltoreq.85R is a C.sub.1 to C.sub.14, aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C.sub.1 to C.sub.14 aliphatic or aromatic hydrocarbon radical, andX is selected from the group consisting of Cl, Br, I,or mixtures thereof, which catalyst is in particulate from and diluted with an inert carrier material; a process for preparing such catalyst; a process for using said catalyst to readily prepare ethylene homopolymer having a density of about .gtoreq.0.958 to .ltoreq.0.972 and a melt flow ratio of .gtoreq.22 to .ltoreq.32 in a low pressure gas phase process at a productivity of .gtoreq.50,000 pounds of polymer per pound of Ti. Novel polymers and molded articles are prepared.
摘要:
A shower additive dispenser assembly including an arm member. A receptacle is mounted to the arm member. A body member has a cavity formed therein for retaining a fluid, the body member is removably mounted to the receptacle. A microporous flow restrictor is disposed at the body member. The microporous flow restrictor is configured for allowing the fluid to exit the body member.