Process of purifying maleic anhydride-modified polyolefin

Details Process of purifying maleic anhydride-modified polyolefin Process of purifying maleic anhydride-modified polyolefin

1986-05-14

1987-10-06

Briggs, Sr., Wilbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

523337, 525285, 525369, 528489, 528491, 528499, C08F 842, C08F 844

Patent

active

046983953

ABSTRACT:
A process of purifying maleic anhydride graft polyolefin comprising the steps of adding an aqueous solution of alkali initial hydroxide to a solution of maleic anhydride graft polyolefin containing unreacted maleic anhydride which is dissolved in an organic solvent at a temperature from 80.degree. C. to 160.degree. C., thereby precipitating maleic anhydride graft polyolefin particles to make a W/O emulsion; stirring the W/O emulsion while maintaining the temperature at a same temperature as above for less than 2 hours, thereby selectively forming the alkali metal salt of unreacted maleic anhydride; adding the aqueous solution of alkali metal hydroxide to the W/O emulsion to convert the W/O emulsion into an O/W emulsion; separating the maleic anhydride draft polyolefin particles, and washing the maleic anhydride graft polyolefin particles with water.

REFERENCES:
patent: 3483276 (1969-12-01), Mahlman et al.
patent: 4064315 (1977-12-01), Bivans et al.
patent: 4506056 (1985-03-01), Gaylord
patent: 4599385 (1986-07-01), Clayton et al.

Affiliated with

Also associated with

Rating

Process of purifying maleic anhydride-modified polyolefin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of purifying maleic anhydride-modified polyolefin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of purifying maleic anhydride-modified polyolefin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2117925