US 5,294,352 A · Compositions for the detackification of paint spray booth water and waste water

Abstract

A composition for the detackification and clarification of acid and alkaline paint and lacquer waste waters and paint spray booth wastes, comprising: an inorganic-organic and/or organic adduct alloy polymer composition having the formula: A.multidot.B.sup.+ .multidot.D.sup.+ wherein: A=[(SiO.sub.2 /Me.sup.I.sub.2 O).sub.u Me.sup.II.sub.m Me.sub.m.sup.III(OH) p.sup.(SO 4.sup.) y.sup.(Aci) (2m+3n)-p-2y].sub.4 where r=1 to 98% bw; u=0 to 10% bw; ##STR1## where: x=0 to 98% bw; Z is a divalent substituted or unsubstituted aliphatic, cycloaliphatic, heterocyclic or aromatic radical D.sup.+ (PQAM).sub.w where w=2 to 98% b.w. of polyquaternized polymer (PQAM) Me.sub.m.sup.II is selected from the divalent cationic group comprising: Mg, Zn, Ca, and Fe.sup.2+ m=0 to 5 Me.sub.n.sup.III is a tri-or more valent metal selected from the group comprising: Fe, Al, and Al-Zn complexes; n=1 to 20 Aci is selected from the monovalent anionic group comprising Cl.sup.-, Br.sup.-, I.sup.-, NO.sub.3 --, H.sub.2 PO.sub.4 --, CH.sub.3 COO.sup.-, OH.sup.- or a mixture of two or more of the foregoing, but preferably Aci is Cl.sup.-, NO.sub.3 --, CH.sub.3 COO.sup.-, or H.sub.2 PO.sub.4 --; MeI=Na, K, Li, Cs p=0 to 75 y=0 to 15 The method of manufacturing such compositions is also disclosed.

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Claims20

Dependent claims

A composition for detackifying and coagulating paint or lacquer in a spray booth bath wherein the water bath traps excess plant and lacquer from a painting process, said composition made by adding to said water in acid or alkaline media sufficient amount of a water soluble product comprising:

an inorganic-organic adduct alloy polymer composition having the formula
(A).sub.r -(B.sup.+).sub.x -(D.sup.+).sub.w
wherein:
A is an inorganic material represented by the formula:
A={(SIO.sub.2 /Me.sup.I.sub.2 O).sub.u Me.sub.m.sup.II Me.sub.n.sup.III (OH).sub.p (SO.sub.4).sub.y (Aci).sub.(2m+3)-p-2y }.sub.r
where:
u is 0 to 10% by weight, r is 1 to 99% by weight (SiO.sub.2 /Me.sub.2.sup.I O).sub.u ratio is 1.5 to 3.5 and Me.sup.I =Na, K, Li,
(SiO.sub.2 /Me.sub.2.sup.I O).sub.u is a silicate adduct or polymeric form of a compound selected from the group of hydroxy, polyhydroxy and oxy aluminum compound;
Me.sub.m.sup.II is selected from the divalent cation group of hydroxy, polyhydroxy aluminum and iron adduct complex consisting of:
Mg, Zn, Ca, and Fe.sup.II ;
and m=0 to 5;
Me.sub.n.sup.III is a tri-or higher valent metal selected from the group consisting of the adduct of hydroxy, polyhydroxy, and oxy of Al, Fe, and Al-Zr complexes;
and
n=1 to 20;
Aci is selected from the monovalent anionic group consisting of:
I.sup.--, Cl.sup.--, Br.sup.--, NO.sub.3.sup.--, H.sub.2 PO.sub.4.sup.--, CH.sub.3 COO.sup.--, OH.sup.--, and mixtures thereof;
p=0 to 75;
y=0 to 15;
--(B.sup.+).sub.x
is a water soluble cationic polymer selected from the group consisting of protonized or quaternized polymers of melamine-glyoxal, melamine-formaldehyde, melamine-glyoxal-formaldehyde and its copolymer with cyanoguanidine, urea, cationic polyamine selected from the group of epichlorohydrin-dimethylamine polymers or copolymers thereof, (C.sub.1 -C.sub.3) alkanol amine protonized by mineral acids or organic acids selected from the group consisting of hydrochloric, sulfuric, phosphoric, nitric, formic, acetic, propionic, glycolic, lactic, citric, glutaric, oxalic and mixtures thereof, and optionally quaternized with a compound selected from the group consisting of methyl halides and C.sub.1 -C.sub.2 dialkyl sulfates, said polymer having a viscosity average molecular weight of from 200 to 500,000;
and x=0 to 100% by weight, and --(D.sup.+).sub.w
is a water soluble cationic polymer or (co)polymer selected from the group consisting of homopolymers of cationic monomers selected from the group consisting of (meth)acrylamide, C.sub.1 -C.sub.4 dialkylamino(meth)acrylate and their quaternized derivatives with methyl halides or C.sub.1 -C.sub.2 dialkyl sulfates, salts of dialkylamino-(meth)acrylate with acids selected from the group of sulfuric, hydrochloric and phosphoric acids, methacrylamidopropyl trimethyl ammonium salt, N,N,N-trimethylallyl ammonium salts, diallyldimethyl ammonium halide, and copolymers thereof, amphoteric polymers selected from the group consisting of poly(DADMAC), (co)polymers of (DADMAC-acrylamide) in weight ratio of (50/50), and mixtures thereof, acrylamide-manich (co)polymers, nonionic, anionic and cationic (co)polyacrylamide, blends of cationic (co)polyacrylamide and poly(DADMAC) with water soluble protonized and optionally quaternized polymers of melamine-glyoxal, melamine-formaldehyde, melamine-glyoxal-formaldehyde and (co)polymers with cyanoguanidine, urea, cationic polyamine selected from the group of epichlorohydrin-dimethylamine polymers or copolymers thereof, C.sub.1 -C.sub.3 alkanol amine, and mixtures thereof, and
w=0.2 to 99% by weight
with the proviso that A is always positive and at least one of B.sup.+ and/or D.sup.+ is also positive.

21 more elements

A composition for detackifying and coagulating paint or lacquer in a spray booth wherein the water bath traps excess paint or lacquer from painting processes, said composition made by adding to said water in acid or alkaline media sufficient amount of water soluble product comprising a water soluble organic-organic alloy of the formula:

(B.sup.+).sub.x -(D.sup.+).sub.w
wherein
--(B.sup.+).sub.x
is a water soluble cationic polymer selected from the group consisting of cationic or quaternized polyamines selected from the group of epichlorohydrin-dimethylamine polymers or copolymers thereof, protonized or quaternized polymers of melamine-glyoxal, melamine-formaldehyde, melamine-formaldehyde-glyoxal and their (co)polymers with a compound selected from the group consisting of cyanoguanidine, urea, (C.sub.1 -C.sub.3) alkanol amines protonized by mineral acid or organic acids selected from the group of hydrochloric, sulfuric, phosphoric, nitric, formic, acetic, propionic, glycolic, lactic, citric, glutaric, oxalic and mixtures thereof, and optionally quaternized with a compound selected from the group consisting of methyl halides and C.sub.1 -C.sub.2 dialkyl sulfates, said polymer having a viscosity average molecular weight of from 200 to 500,000
x=1 to 99% by weight;
and
--(D.sup.+).sub.w
is selected from a group consisting of aqueous solution of cationic polymers selected from the group consisting of acrylamide, C.sub.1 -C.sub.4 dialkylamino(meth)acrylate and their quaternized derivatives with methyl halides or C.sub.1 -C.sub.2 dialkyl sulfates, salts of dialkylamino-(meth)acrylate with acids selected from the group of sulfuric, hydrochloric and phosphoric acids, methacrylamidopropyl trimethyl ammonium salt, N,N,N-trimethylallyl ammonium salts, diallyldimethyl ammonium halide, and copolymers thereof, amphoteric polymers selected from the group consisting of poly(DADMAC), (co)polymers of (DADMAC)-acrylamide) in weight ratio of (50/50), and mixtures thereof, acrylamide-manich (co)polymers, nonionic, anionic and cationic (co)polyacrylamide, blends of cationic (co)polyacrylamide and poly(DADMAC) with water soluble protonized and optionally quaternized polymers of melamine-glyoxal, melamine-formaldehyde, melamine-glyoxal-formaldehyde and (co)polymers with cyanoguanidine, urea, cationic polyamines selected from the group of epichlorohydrin-dimethylamine polymers and copolymers thereof, C.sub.1 -C.sub.3 alkanol amine, and mixtures thereof and w=1 to 99% by weight.

5 more elements

Dependencies are inferred from the claim text.

Description7,306 words

Summary2,104 words

#Industrial waste water as well water-borne waste and paints derived from industrial processes such as electrophoretic and spray-booth painting can cause serious pollution problems. Water-born paints, and waste water when discharged as aqueous carrier with paint or lacquer residues, increase substantially the chemical oxygen demand (COD). Such paint and lacquer deteriorate by ageing or chemical modification, become sticky or hard, resulting in pipe and equipment blockage which are extremely difficult to clear.

#In addition to the prior art disclosed in U.S. patent application Ser. No. 842,515, filed on Mar. 21, 1986, the following prior art patents are related to the subject matter of this application:

#U.S. Pat. No. 4,067,806 of Frank A. Mauceri, discloses a process of detackification of paint and spray booth lacquer by using amphoteric salts (like zinc chloride etc.) and a terpolymer-"graft"-on diallyldimethylammonium halide, N-vinylpyrrolidone and acrylamide. The compositions have tremendous disadvantage by using amphoteric salts like ZnCl.sub.2, which will form zinc hydroxide only at high pH of 10 to 10.5. Below and above this pH range, the zinc hydroxide is soluble again, so the floc forms. On the other hand, the zinc hydroxide is very fluffy and unstable, and absorbs much water which makes the products very unsecure in this kind of application. The waste water and the sludges are alkaline and can not be discharged without further treatment, which makes such processes uneconomical. Further, under the conditions described in the patent, the amphoteric salt (ZnCl.sub.2) can easily be transformed into inactive anion like (ZnCl.sub.3).sup.- by the reaction: ##STR2## which decreases the efficiency to treat and/or kill the anodic and/or cathodic paints, lacquer, etc.

Detailed description5,202 words

#The invented chemical compositions are inorganic-organic alloy polymer adduct compositions and/or organic alloy polymer adducts compositions for water-borne waste and lacquer paint treatment, having the formula: ##STR5## as described; provided that at least one of A, B.sup.+, D.sup.+ is positive.

#The novel (co)polymer alloy of inorganic polymers (A) is defined by any of the following general formulas, I(a) through I(g):

#[(SiO.sub.2 /Me.sup.I.sub.2 O).sub.u Me.sub.m II Me.sub.n III.sub.(OH)p(SO.sbsb.4.sub.).sbsb.y .sub.(Aci).sbsb.(2m+3n)-p-2y ].sub.r I(a)

Compositions for the detackification of paint spray booth water and waste water

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Compositions for the detackification of paint spray booth water and waste water

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Abstract

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Claims20

Description7,306 words

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Classification20 codes

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Description7,306 words