Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2005-10-18
2005-10-18
Wu, David W. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S317100, C526S281000, C526S271000, C525S329500, C525S330200, C525S362000
Reexamination Certificate
active
06956090
ABSTRACT:
A method of obtaining homopolymers and/or copolymers in aqueous solution by the use of phosphorous acid and/or its salts or sodium hypophosphite and by neutralization during the polymerisation of the ethylenically unsaturated monomers by the continuous addition, first of all, of bases such as sodium hydroxide, potassium hydroxide or lithium hydroxide and then bases of alkaline earths such as calcium hydroxide, magnesium hydroxide, calcium oxide or magnesium oxide.The polymers obtained by the said method and uses thereof.
REFERENCES:
patent: 5109090 (1992-04-01), Mongoin et al.
patent: 5278248 (1994-01-01), Egraz et al.
patent: 5736601 (1998-04-01), Egraz et al.
patent: 5866664 (1999-02-01), McCallum et al.
patent: 5880085 (1999-03-01), Kensicher et al.
patent: 5891972 (1999-04-01), Egraz et al.
patent: 6063884 (2000-05-01), Egraz et al.
patent: 6093764 (2000-07-01), Egraz et al.
patent: 6184321 (2001-02-01), Egraz et al.
patent: 0 405 818 (1991-01-01), None
patent: 0 792 890 (1997-09-01), None
patent: 91 12278 (1991-08-01), None
U.S. Appl. No. 10/030,988, filed Apr. 12, 2002, Dupont et al.
U.S. Appl. No. 10/070,424, filed Jul. 30, 2002, Suau et al.
U.S. Appl. No. 10/311,219, filed Dec. 16, 2002, Suau et al.
U.S. Appl. No. 10/322,522, filed Dec. 19, 2002, Egraz et al.
U.S. Appl. No. 10/168,389, filed Jun. 21, 2001, Suau et al.
1996fr-09345/ap.prn; Egraz, J: Kensicher, Y; Suau, J; Homo- and copolymers of unsaturated monomers used for example for grinding or dispersing agents for mineral materials, water retention agents and anti-scale agents which have a very low content of residual monomer(s).: Jul. 19, 1996; Basic Abstract.
Egraz, J; Kensicher, Y; Suau, J; Suau, J M; Egraz, J B; Obtaining aqueous solutions of homo- and/or copolymer of unsaturated monomers—comprises using phosphorus compounds having specified oxidation degree, in presence of hydrogen peroxide and absence of free radical decomposition agents.; Jul. 19, 1996; Basic Abstract.
Egraz Jean-Bernard
Jacquemet Christian
Mongoin Jacques
Suau Jean-Marc
Coatex S.A.
Sastri Satya
Wu David W.
LandOfFree
Method for obtaining water-soluble polymers, resulting... 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 for obtaining water-soluble polymers, resulting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for obtaining water-soluble polymers, resulting... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3474832