Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Reexamination Certificate
2007-01-30
2007-01-30
Gorr, Rachel (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
C502S161000, C502S168000, C502S170000, C502S171000, C502S172000, C556S027000, C556S040000, C556S054000, C556S055000, C556S138000, C556S182000, C556S183000
Reexamination Certificate
active
10479330
ABSTRACT:
A composition suitable for use as a catalyst for the reaction of an isocyanate compound or prepolymer thereof with an alcohol to form a polyurethane comprises a mixture of (a)an organometallic compound selected from: (i) a compound of formula M(RO)4, where M is titanium, zirconium, hafnium, aluminium, cobalt or iron or a mixture of these metals and OR is the residue of an alcohol ROH in which R comprises an (optionally substituted) C1-30cyclic, branched or linear, alkyl, alkenyl, aryl or alkyl-aryl group or a mixture thereof, or; (ii) a complex of titanium, zirconium and/or hafnium and an acetoacetate ester and (b) a coordinating compound selected from a ketone, aldhehyde, carboxylic acid, sulphonic acid, nitride or an imine. An isocyanate composition containing a catalyst of the claimed composition is also described.
REFERENCES:
patent: 3025172 (1962-03-01), Bernstein
patent: 3654374 (1972-04-01), Scheyer
patent: 4442275 (1984-04-01), Martin
patent: 4794129 (1988-12-01), Gillis, Jr. et al.
patent: 5478802 (1995-12-01), Moradi-Araghi
patent: 5846897 (1998-12-01), Blank et al.
patent: 5849864 (1998-12-01), Carlson et al.
patent: 5902835 (1999-05-01), Meier et al.
patent: 6084026 (2000-07-01), Jamasbi
patent: 39 38 203 (1991-05-01), None
patent: 2 303 372 (1997-02-01), None
patent: 1634673 (1991-03-01), None
patent: WO-97/17388 (1997-05-01), None
patent: WO-98/41322 (1998-09-01), None
patent: WO-00/02855 (2000-01-01), None
Di Serio et al; Ethoxylation of fatty alcohols promoted by an aluminum alkoxide sufate catalyst; Journal of Metal Catalysis; 112 (2); 1996; pp. 235-251; abstract.
International Search Report dated Aug. 29, 2002, from International Application No. PCT/GB02/02246.
Gorr Rachel
Johnson Matthey PLC
RatnerPrestia
LandOfFree
Organometallic compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Organometallic compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organometallic compositions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3742823