Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1974-06-03
1976-08-31
Garvin, Patrick P.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
260 47EA, C08F 422
Patent
active
039779963
ABSTRACT:
This patent describes a method of catalyzing the reaction of organic polybasic acid anhydrides with at least one oxirane which comprises carrying out the reaction in the presence of an effective catalytic amount of a synergistic catalyst mixture comprising an active chromium III tricarboxylate salt having unoccupied coordination sites and any compound capable of polarizing the carboxylic acid anhydride to yield a reactive carboxylic acid moiety. Preferred compounds as the cocatalyst member include one or more members selected from the group consisting of the alkyl, aryl, aralkyl, and alkaryl tri-substituted compounds of the following types: quaternary ammonium hydroxides; quarternary phosphonium halides; arsines; amine oxides; sulfoxides; tertiary aminophenols; trihydrocarbon phosphine oxides; trihydrocarbon phosphines; tertiary amines, and combinations thereof, each alone or in combination with a phenol or other reactive promoter such as, carboxylic acids and alcohols; and compounds containing two or more co-catalytic functional groups in the same molecule such as alkyl phosphoramides, alone or in combination with any and all of (1) any of the members, (2) phenols or other reactive promoters. Also the invention pertains to a novel class of mixed catalysts which act synergistically for promoting the reaction of oxirane oxygen groups with curing (crosslinking) or chain extension agents.
REFERENCES:
patent: 2768153 (1956-10-01), Shokal
patent: 2947712 (1960-08-01), Belanger et al.
patent: 3374193 (1968-03-01), Tsatsos et al.
patent: 3404185 (1968-10-01), Thomas et al.
patent: 3487027 (1969-12-01), Case
patent: 3586658 (1971-06-01), Wooster
patent: 3598749 (1971-08-01), Cheng et al.
patent: 3625755 (1971-12-01), Potrafke
patent: 3635869 (1972-12-01), Steele et al.
Gold Marvin H.
Katzakian, Jr. Arthur
Steele Roger B.
Weyland Herman H.
Aerojet-General Corporation
Garvin Patrick P.
Jacobs Marvin E.
LandOfFree
Catalysts for the oxirane-anhydride reaction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalysts for the oxirane-anhydride reaction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalysts for the oxirane-anhydride reaction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1814535