Ecofriendly cationic polyelectrolytes

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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C526S292100, C526S292600, C526S307200, C526S307300, C526S307700, C526S312000, C524S829000, C524S831000, C524S833000, C210S609000, C210S734000, C210S735000

Reexamination Certificate

active

07375173

ABSTRACT:
The invention relates to cationic water-soluble polyelectrolytes, especially terpolymers, which are obtained by polymerising monomers of (meth)acrylamide, a quaternised (meth)acrylamide derivative, a (meth)acrylic acid derivative and/or hydrolysis-stable cationic monomers. The composition of the polyelectrolytes is characterised by a toxicity index formula Fi=(QTP−2QME)/10≦1 wherein QTP represents the total cationic charge of the polymer and QME represents the charge part of the ester type monomer. The invention also relates to the production and use of said polyelectrolytes and water-in-water polymer dispersions which contain said polyelectrolytes.

REFERENCES:
patent: 2831841 (1958-04-01), Jones et al.
patent: 3929739 (1975-12-01), Barabas et al.
patent: 5587415 (1996-12-01), Takeda
patent: 5776362 (1998-07-01), Sato et al.
patent: 25 08 346 (1975-08-01), None
patent: 28 23 830 (1979-01-01), None
patent: 30 46 978 (1981-09-01), None
patent: 37 27 229 (1988-03-01), None
patent: 38 00 199 (1989-07-01), None
patent: 40 24 207 (1992-02-01), None
patent: 41 38 763 (1993-05-01), None
patent: 197 04 953 (1998-08-01), None
patent: 197 48 153 (1999-05-01), None
patent: 197 52 127 (1999-07-01), None
patent: 197 52 128 (1999-07-01), None
patent: 100 41 392 (2002-03-01), None
patent: 100 41 393 (2002-03-01), None
patent: 0 165 770 (1985-12-01), None
patent: 0 649 820 (1995-04-01), None
patent: 2 390 983 (1978-12-01), None
patent: 10-309405 (1998-11-01), None
patent: WO 02/06097 (2002-01-01), None
Ernst Bartholomé, et al., “Ullmanns Encyklopädie der technischen Chemie”, Verlag Chemie, pp. 15-16.
Heinz Horacek, “Fette und Öle Fettderivate Folgeprodukte”, Fett-, Öl-, Tensid-, Kosmetik- und Pharmaindustrie, Jul. 1988, vol. 114, 11/12, pp. 447-455.
H. Takigami, et al., “Toxicity assays and their evaluation on organic polymer flocculants used for municipal sludge dewatering”, Water Science and Technology, 1998, vol. 38, No. 7, 1 Page.
V. N. Syuckin, et al., “New ecologically safe “flocculants”—cationic polyelectrolytes”, Khimiya Rasticelougo Syrya, 136:218483, 2000, vol. (2), 4 Pages.
Kumio Fujiwara, et al., “Synthetic organic “polymer” “flocculants” and monomer removal from the “flocculants” for water treatment”, Jpn. Kokai Tokyo Koho, 133:22112, 1 Page, Jun. 2000.
M. Albasiaid, et al., “Ultrastructural and clinionpathological studies on the “toxicity” of cationic “acrylamide” based flocculant to rainbow trout”, Veterinary Pathology, 106:133214, 1987, vol. 24 (1), 1 Page.
Yu L. Veitser, et al., ““Polymer” for “flocculation” of wastewater sediments”, U.S.S.R., Orkrytiya, Izabret, 105:7067, vol. (47), 1 Page, Dec. 1985.
Toru Kuboi, et al., ““Toxicity” of cationic “polymer” “flocculants” to higher plants, I. Seedling assay”, Soil Science and Plant Nutrition (Tokyo, Japan), 101:224294, 1984, vol. 30 (3), 1 Page.
D. Mourato, et al., “Effect of polyelectrolytes used as “flocculants” on microorganisms present in receiving streams”, Sciences et Techniques de l'Eau, 100:108802, 1983, vol. 16 (4), 1 Page.
Toru Kuboi, et al., “Effect of synthetic “flocculants” on soil environment. I. Effect of polyacrylamide derivatives (synthetic “flocculants”) on growth of turnip seedlings and of green alga”, Kokuritsu Kogai Kenkyusho Kenkyu Hokoku, 94:151324, 1980, vol. 14, 1 Page.
S. Novakova, et al., “Study of the “toxic” action of new “flocculants” obtained under new pilot-plant conditions”, Khigiena j Zdraveopazvane, 86:166013, 1976, vol. 19 (5), 1 Page.
G. Paulet, et al., ““Toxicity” of some acrylic and methacrylic esters of “acrylanxide” and polyacrylamides”, Archives des Maladies Profersionnelles de Medecine du Travail et de Securite Sociale, 83:91832, 1975, vol. 36 (1-2), 1 Page.
D. D. McCollister, et al., ““Toxicologic” investigations of polyacrylamides”, Toxicol. Appl. Pharmacol., 63:92536, 1965, vol. 7 (5), 2 Pages.

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