Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1994-04-20
1995-12-26
Lusignan, Michael
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502168, 502216, 502242, 502349, 502353, 528 55, 528 58, B01J 2300
Patent
active
054787904
ABSTRACT:
In its broadest aspects, the present invention is directed to a tin or bismuth catalyst/mercapto complex as disclosed in U.S. Pat. No. 4,788,083 which catalyst complex exhibits substantially the same stability and activity after extended periods of storage as it exhibits upon initial formation. Such long term storage stability is achieved by restricting the vehicle for the catalyst complex to one that will not react with said mercapto compound upon extended storage of said catalyst system. Advantageous such vehicles include aromatic hydrocarbons and terpenes. Importantly, ketone vehicles are excluded from the catalyst complex formulation. Preferred vehicles include toluene, xylene, turpentine, d-limonene, aromatic petroleum distillates, and mixtures thereof. Corresponding method for forming the stabilized catalyst complex forms yet further aspect of the present invention. As another aspect of the present invention, the present invention is directed to polymercapto resin/polyisocyanate formulations as disclosed in U.S. Pat. No. 4,753,825 which are more stable by dint of the elimination of ketonic and like vehicles that are involved in unintended side reactions with the mercapto content thereof. As a further aspect of the present invention, the cure rate of such polymercapto resin/polyisocyanate formulations can be retarded to commercially accepted levels by blending acrylic resins therewith. Advantageously, the stabilized tin catalyst complexes can be used in the instant controlled cure rate polymercapto resin/polyisocyanate formulations.
REFERENCES:
patent: 4517222 (1985-05-01), Blegen
patent: 4753825 (1988-06-01), Linden et al.
patent: 4788083 (1988-11-01), Dammann et al.
Baker Kimberly S.
Norby David B.
Ashland Oil Inc.
Lusignan Michael
LandOfFree
Blocked tin catalyst system for use with mercapto resin/acrylic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blocked tin catalyst system for use with mercapto resin/acrylic , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blocked tin catalyst system for use with mercapto resin/acrylic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1369110