Process for forming a metal sulfonate containing EPDM

Details Process for forming a metal sulfonate containing EPDM Process for forming a metal sulfonate containing EPDM

1979-03-23

1980-09-09

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 237R, 260 312R, 260 334R, 260 336AQ, 260 336PQ, 260 338R, C08L 9100

Patent

active

042217121

ABSTRACT:
This invention relates to an improved process for the formation of an improved gel-free neutralized sulfonated elastomeric polymer having about 10 to about 50 meq. unneutralized sulfonate groups, wherein the unneutralized sulfonate groups are neutralized with a metal counterion being selected from the group including lithium, sodium, potassium, cesium, barium, calcium, magnesium, zinc, lead, iron (II), copper (II), mercury (II), and nickel. A cement of an elastomeric polymer having olefinic functional groups dissolved in a non-reactive solvent is contacted with a sulfonating agent such as an acyl sulfate thereby sulfonating the elastomeric polymer, and the sulfonation reaction is subsequently quenched by the addition of isopropanol at a concentration level of about 5 to about 30 volume percent based on a volume of the non-reactive solvent. The unneutralized sulfonated elastomeric polymer is then neutralized with a neutralizing agent dissolved in water, the water being at a concentration level of less than about 2.5 volume percent based on the volume of the non-reactive solvent thereby forming a gel-free cement of the neutralized sulfonated elastomeric polymer having a Brookfield viscosity at room temperature of less than about 20,000 cps.

REFERENCES:
patent: 3836511 (1974-09-01), O'Farrell et al.
patent: 3847854 (1974-11-01), Canter et al.
patent: 3867247 (1975-02-01), O'Farrell et al.
patent: 4072648 (1978-02-01), O'Farrell et al.

Affiliated with

Also associated with

Rating

Process for forming a metal sulfonate containing EPDM 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 for forming a metal sulfonate containing EPDM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for forming a metal sulfonate containing EPDM will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2223728