| Patent Number |
Title Of Patent |
Date Issued |
| 6936684 |
Poly (alkylene oxide) prepared in the presence of a phosphazenium salt or compound |
August 30, 2005 |
| A salt useful as an active species in an organic reaction and represented by the following chemical formula (1): ##STR1##wherein n stands for an integer of from 1 to 8, Z.sup.n- represents an n-valent anion of an active hydrogen compound, a, b, c and d each stands for a positive inte |
| 6022945 |
Process for production of propylene oxide/ethylene oxide block copolymers |
February 8, 2000 |
| A catalyst for the polymerization of an alkylene oxide compound is disclosed. This catalyst is composed of a phosphazene compound or a phosphazenium salt which is derived from the phosphazene compound and an active hydrogen compound. A poly(alkylene oxide) can be efficiently produced |
| 5990352 |
Phosphazenium salt and preparation process thereof, and process for producing poly(alkylene oxid |
November 23, 1999 |
| A salt useful as an active species in an organic reaction and represented by the following chemical formula (1): ##STR1## wherein n stands for an integer of from 1 to 8, Z.sup.n- represents an n-valent anion of an active hydrogen compound, a, b, c and d each stands for a positiv |
| 5952457 |
Polymerization catalyst for alkylene oxide compound and production process of poly(alkylene oxid |
September 14, 1999 |
| A catalyst for the polymerization of an alkylene oxide compound is disclosed. This catalyst is composed of a phosphazene compound or a phosphazenium salt which is derived from the phosphazene compound and an active hydrogen compound. A poly(alkylene oxide) can be efficiently produced |
| 5677409 |
Syndiotactic polypropylene wax, production process thereof, and heating roll fixing-type toner c |
October 14, 1997 |
| Described herein are propylene waxes and a production process thereof. The waxes are each produced by polymerizing propylene in a reaction vessel while using a solid catalyst in the presence or absence of an organoaluminum compound. A hydrogen partial pressure of a gas phase in the r |
| 5658999 |
Syndiotactic polypropylene wax, production process thereof, and heating roll fixing-type toner c |
August 19, 1997 |
| Described herein are propylene waxes and a production process thereof. The waxes are each produced by polymerizing propylene in a reaction vessel while using a solid catalyst in the presence or absence of an organoaluminum compound. A hydrogen partial pressure of a gas phase in the r |
| 5652315 |
Method for preparing ethylene copolymer |
July 29, 1997 |
| A method for preparing an ethylene copolymer which comprises the step of copolymerizing ethylene with an aromatic vinyl compound in the presence of a catalyst comprising (A) a specific transition metal compound represented by the formula I ##STR1## and (B) a cocatalyst such as an |
