Method for dispersing a hydrophobic additive in an aqueous media

Abstract

An aqueous composition and method for applying additives to polymeric particles includes a water-dissipatable polyester derived from a dicarboxylic acid component and a diol component and a difunctional monomer containing a SO 3 M moiety attached to an aromatic nucleus to at least partially disperse the additive. A method for dispersing a hydrophobic additive in an aqueous media includes the step of contacting the hydrophobic additive with an effective amount of the water-dissipatable polyester to form a mixture and agitating the mixture sufficiently to produce a homogenous blend is also described.

I claim:  
     
         1 . An aqueous composition of matter comprising: 
 a. an additive for coating at least a portion of a polymeric particle;    b. an effective amount of a water-dissipatable polyester derived from a dicarboxylic acid component and a diol component and a difunctional monomer containing a SO 3 M group attached to an aromatic nucleus to at least partially disperse said additive, wherein M is selected from the group consisting of is hydrogen, Na + , Li + , K + , Mg ++ , Ca ++ , Cu ++ , Fe ++ , Fe +++ , or a combination thereof.; and    c. from about 5 weight % to about 95 weight % water, wherein said percentages are based on the total weight of the components a-c.    
     
     
         2 . The composition of  claim 1  wherein said effective amount of said water-dissipatable polyester is from about 5 weight % to about 50 weight %.  
     
     
         3 . The composition of  claim 1  wherein said effective amount of said water-dissipatable polyester is from about 15 weight % to about 50 weight %.  
     
     
         4 . The composition of  claim 1  wherein said effective amount of said water-dissipatable polyester is from about 25 weight % to about 50 weight %.  
     
     
         5 . The composition of  claim 1  wherein said additive is selected from the group consisting of antioxidants, coupling agents, antistatic agents, nucleating agents, metal deactivators, lubricants, slip agents, antiblocking agents, UV inhibitors, flame retardants, release agents, pigments, colorants, acetaldehyde reducing compounds, reheat aids, and mixtures thereof.  
     
     
         6 . The composition of  claim 5  wherein said additives are selected from the group consisting of tetrakis[methylene 3-(3′, 5′-di-tert-butyl-4′-hydroxyphenyl)-propionate ]methane, octadecyl 3-(3′, 5′-di-t-butyl-4-hydroxyphenyl)propionate, 1,3,5-trimethyl-2,4,6-tris-(3, 5-di-tert-butyl)-4-(hydroxybenzyl)benzene, bis(2,4-di-t-butyl-phenyl) pentaerythritol diphosphite, tris(mono nonylphenyl)phosphite, 4,4′-butylidene-bis (5-methyl-2-t-butyl)phenol, tris(3,5-di-t-butyl-4-hydroxybenzyl)isocyanurate, tris-nonylphenyl phosphite; distearyl pentaerythritol diphosphite; tetrakis-(2,4-di-t-butylphenyl)-4,4′-biphenylylene diphosphonite; tris-(2,3-di-t-butylphenyl) phosphite; butylated hydroxy toluene; dicetyl thiodipropionate; dimyristyl thiodipropionate; poly (1,4-cyclohexylene-dimethylene-3,3 ′-thiodipropionate (partially terminated with stearyl alcohol); silanes; titanates; chromium complexes; low molecular weight polyolefins (with carboxylic moieties); high molecular weight polyolefins; acrylates (with carboxylic moieties); chlorinated paraffins; glycerol monostearates; ethyoxylated amines; polyethylene glycol; quarternary ammonium compounds and its salts; sodium benzoate; diphenyl phosphinic acid and salts of magnesium, sodium, calcium, aluminum; phenyl phosphinic acid and its salts; phenyl phosphorous acid and its salts; oxalyl bis-(benzylidene hydrazide); 2,2′-oxamido bis-(ethyl 3-(3,5-di-t-butyl-4-hydroxyphenyl) propionate; diatomaceous silica; precipitated silica, silica gel, talc; clay; metallic stearates; alkyl bis-stearamids; glycerol monostearates; polyethylene glycol; crucamid; oleamid, 2-hydroxy-4-octoxybenzophenone; 2-hydroxy-4-isooctoxybenzophenone; 4-hydroxy-4-n-dodecyloxybenzophenone; 2-(3-di-t-butyl-2-hydroxy-5-methylphenyl-5-chlorobenzotriazole; 2-(2-hydroxy3,5-di-t-amylphenyl) benzotriazole; p-t-butylphenyl salicyllate; 2,4-di-t-butylphenyl-3,5-di-t-butyl-4-hydroxybenzoate; nickel bis-ortho-ethyl(3,5-di-t-butyl-4-hydroxybenzyl) phosphonate; 2,2′, 6,6′-tetramethyl-4-piperidinyl sebacate, decabromodiphenyl oxide; dodecachlorodimethane dibenzocyclooctane; ethylene bis-dibromo norbornane dicarboximide; ethylene bis-tetrabromophthalimide; antimony trioxide, methyl paraben, ethyl paraben, propyl paraben, halogenated alkyl organic compounds, polyamides, carbon black, antomony metal, infrared absorbing compounds, and mixtures thereof.  
     
     
         7 . The composition of  claim 1  wherein said additives range from about 0.5 weight % to about 35 weight %.  
     
     
         8 . The composition of  claim 1  wherein said additives range from about 2 weight % to about 30 weight %.  
     
     
         9 . The composition of  claim 1  wherein said additives range from about 5 weight % to about 25 weight %.  
     
     
         10 . The composition of  claim 1  wherein said polymeric particle has a surface energy of from about 25 dynes/cm to about 45 dynes/cm.  
     
     
         11 . A method for applying additives to polymeric particles comprising the step of contacting said particles with the composition of  claim 1 .  
     
     
         12 . The method of  claim 11  further comprising drying the resulting particles.  
     
     
         13 . The method of  claim 11  wherein said polymeric particle has a surface energy of from about 25 dynes/cm to about 45 dynes/cm.  
     
     
         14 . The method of  claim 11  wherein said polymeric particle has a surface energy of from about 25 dynes/cm to about 40 dynes/cm.  
     
     
         15 . The method of  claim 11  wherein said polymeric particle has a surface energy of from about 25 dynes/cm to about 35 dynes/cm.  
     
     
         16 . The method of  claim 10  wherein said polymeric particle is selected from the group consisting of polyolefins selected from the group consisting of polypropylene, low density polyethylene, high density polyethylene and linear low density polyethylenes, polystyrene, polyesters, polyamides; copolymers selected from the group consisting of crystalline propylene ethylene copolymers; rubber and mixtures thereof.  
     
     
         17 . A method for dispersing a hydrophobic additive in an aqueous media comprising the step of contacting the hydrophobic additive with an effective amount of the water-dissipatable polyester of  claim 1  to form a mixture; and agitating said mixture sufficiently to produce a homogenous blend.  
     
     
         18 . The method of  claim 17  wherein said additive is selected from the group consisting of antioxidants, coupling agents, antistatic agents, nucleating agents, metal deactivators, lubricants, slip agents, antiblocking agents, UV inhibitors, flame retardants, release agents, pigments, colorants, acetaldehyde reducing compounds, reheat aids, and mixtures thereof.  
     
     
         19 . The method of  claim 17  wherein said additive ranges from about 0.5 weight % to about 35 weight % of said blend.  
     
     
         20 . The method of  claim 17  further comprising contacting a polymeric particle having a surface energy of from about 25 dynes/cm to about 45 dynes/cm with said blend.