Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1992-11-10
1995-02-14
Lieberman, Paul
Compositions
Water-softening or purifying or scale-inhibiting agents
252106, 252142, 252559, 134 40, C11D 104, C11D 122
Patent
active
053892836
ABSTRACT:
An effective phosphate free and organic solvent free aqueous acidic cleaner for soiled plastic surfaces is an aqueous solution or dispersion that has a pH in the range from about 4.4--about 6.1; that has a buffering capacity sufficiently high that at least 0.06 milliequivalents of a strong alkali per liter of the composition must be added to raise the pH of the composition by 0.1 pH unit; and that consists essentially of water and:
(A) from about 0.4 to about 10 milliequivalents per kilogram of total composition ("mEq/kg") of acids selected from the group consisting of hydroxycarboxylic and dicarboxylic acids;
(B) from about 1.4 to about 20 mEq/kg of salts containing anions of acids selected from the group consisting of hydroxycarboxylic and dicarboxylic acids; and
(C) from about 0.21 to about 3.3 grams per kilogram of total composition ("g/kg") of nonionic surfactant; and, optionally,
(D) an amount of hydrotrope material that is from about 0.25 to about 0.75 times the amount in g/kg of component (C); and
(E) a sufficient amount of biocidal material to inhibit growth of any bacteria and fungi that may be present in the composition.
REFERENCES:
patent: 3218260 (1965-11-01), Lewandowski
patent: 3928249 (1975-12-01), Nunziata et al.
patent: 4079020 (1978-03-01), Mills et al.
patent: 4144201 (1979-03-01), Wintertham et al.
patent: 4235752 (1980-11-01), Rossall et al.
patent: 4247408 (1989-01-01), Imamura et al.
patent: 4569782 (1986-02-01), Disch et al.
patent: 4895658 (1990-01-01), Amjad
Henkel Corporation
Higgins E. M.
Jaeschke Wayne C.
Lieberman Paul
Szoke Ernest G.
LandOfFree
Substantially phosphate free mildly acidic cleaner for plastics does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Substantially phosphate free mildly acidic cleaner for plastics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Substantially phosphate free mildly acidic cleaner for plastics will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-285410