Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1982-11-12
1984-09-18
Jiles, Henry R.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D30760
Patent
active
044725884
ABSTRACT:
This invention relates to a process for producing polyalkenyl succinic anhydrides by reacting with continuous agitation a polyalkylene having a number average molecular weight of between 300 and 50,000 with maleic anhydride in a molar ratio of between 0.5:1 and 20:1 and at a temperature between 200.degree. and 250.degree. C. The feature of the process is that the maleic anhydride is added incrementally to the polybutene at such a rate that a single, homogeneous phase is maintained in the reactor throughout the duration of the reaction and the addition of maleic anhydride reactant is completed within 75% of the duration required to achieve maximum conversion of the polyalkylene of a given molecular weight. The polyalkylene derivative may for example be a polypropylene, a polybutene, a polyiso-butene or a polymer of 4-methyl pentene-1. By carrying out the reaction under these conditions the process results in a reduced amount of resin formed and enables more efficient use of maleic anhydride.
REFERENCES:
patent: 3346354 (1967-10-01), Kautsky et al.
patent: 3855251 (1974-12-01), Cahill
patent: 4282157 (1981-08-01), Van der Voort
BP Chemicals Limited
Dentz Bernard
Jiles Henry R.
LandOfFree
Production of polyalkenyl succinic anhydrides does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Production of polyalkenyl succinic anhydrides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of polyalkenyl succinic anhydrides will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-794985