Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-12-21
1994-09-06
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525192, 525250, 525271, 525302, 525308, 525309, 525310, 5253303, 5253305, 5253319, 5253331, 5253336.379, C08F29702, C08F 832, C08F22010
Patent
active
053448871
ABSTRACT:
Star polymers having first polymeric arms comprising a hydrogenated conjugated diene and smaller second polymeric arms of a methacrylate resist coupling of methacrylate blocks attached to different cores and have improved performance as viscosity index improvers. The polymerized methacrylate units are converted to amide or imide groups by reaction with a primary or secondary amine to give the viscosity index improver dispersant properties.
REFERENCES:
patent: 3359345 (1957-12-01), Doak et al.
patent: 3639521 (1972-02-01), Hsieh
patent: 3890408 (1975-06-01), Schepers et al.
patent: 4029720 (1977-06-01), Seiler et al.
patent: 4077893 (1978-03-01), Kiovsky
patent: 4080406 (1978-03-01), Kelsey
patent: 4246374 (1981-01-01), Kopchik
patent: 4461874 (1984-07-01), Teyssie et al.
patent: 4530973 (1985-07-01), Koster et al.
patent: 4695607 (1987-09-01), Spinelli
patent: 4786689 (1988-11-01), Lund et al.
patent: 4788361 (1988-11-01), Olson et al.
patent: 4794144 (1988-12-01), Spinelli
patent: 4794145 (1988-12-01), Lund et al.
patent: 4975491 (1990-12-01), Quirk
patent: 5002676 (1991-03-01), Willis et al.
patent: 5194510 (1993-03-01), DuBois
patent: 5218053 (1993-06-01), DuBois
patent: 5272211 (1993-12-01), Sutherland et al.
patent: 5278245 (1994-01-01), DuBois et al.
DuBois Dean A.
Sutherland Robert J.
Seidleck James J.
Shell Oil Company
Tackett Keith M.
Warzel M. L.
LandOfFree
Star polymers of dienes, vinylarenes and alkyl methacrylates as does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Star polymers of dienes, vinylarenes and alkyl methacrylates as , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Star polymers of dienes, vinylarenes and alkyl methacrylates as will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1330032