Method of producing water-soluble nonturbid copolymers of at...

Details Method of producing water-soluble nonturbid copolymers of at... Method of producing water-soluble nonturbid copolymers of at...

2006-12-21

2009-08-11

Pezzuto, Helen L. (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S071000, C526S212000, C526S330000

Reexamination Certificate

active

07572870

ABSTRACT:
Method of producing vinyllactam copolymers by free-radical polymerization of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer in an organic solvent in the presence of an initiator under reflux conditions, where following conversion of 90 to 99% by weight of the vinyllactam used, some of the solvent is distilled off and the polymerization is continued.

REFERENCES:
patent: 3513142 (1970-05-01), Blumberg et al.
patent: 3862915 (1975-01-01), Fried et al.
patent: 4053696 (1977-10-01), Herrle et al.
patent: 4182851 (1980-01-01), Straub et al.
patent: 4520179 (1985-05-01), Barabas et al.
patent: 4554311 (1985-11-01), Barabas et al.
patent: 4554312 (1985-11-01), Barabas et al.
patent: 5122582 (1992-06-01), Potthoff-Karl et al.
patent: 5298554 (1994-03-01), Rehmer et al.
patent: 5319041 (1994-06-01), Zhong et al.
patent: 5395904 (1995-03-01), Zhong et al.
patent: 5502136 (1996-03-01), Zhong et al.
patent: 6103820 (2000-08-01), Blankenburg et al.
patent: 6369180 (2002-04-01), Shih et al.
patent: 6512066 (2003-01-01), Steinmetz et al.
patent: 7442751 (2008-10-01), Dobrawa et al.
patent: 7449531 (2008-11-01), Dobrawa et al.
patent: 2007/0149735 (2007-06-01), Dobrawa et al.
patent: 2007/0149737 (2007-06-01), Dobrawa et al.
patent: 2007/0149738 (2007-06-01), Dobrawa et al.
patent: 2007/0197767 (2007-08-01), Angel et al.
patent: 2 218 935 (1973-10-01), None
patent: 0 000 161 (1979-01-01), None
patent: 0 418 721 (1991-03-01), None
patent: 0 795 567 (1997-09-01), None

Affiliated with

Also associated with

Rating

Method of producing water-soluble nonturbid copolymers of at... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing water-soluble nonturbid copolymers of at..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing water-soluble nonturbid copolymers of at... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4089275