US2015210885A1PendingUtilityA1

Matting Paste Composition

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Assignee: AKZO NOBEL COATINGS INT BVPriority: Jul 24, 2012Filed: Jul 22, 2013Published: Jul 30, 2015
Est. expiryJul 24, 2032(~6 yrs left)· nominal 20-yr term from priority
Inventors:Toolika RhoadesJustin Blair
C09D 7/48C09D 7/42C09D 17/00C08K 5/3475C08K 5/17C09D 175/04C08K 5/3435C08K 3/36C09D 7/005
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Claims

Abstract

The invention is directed to a matting paste composition comprising: a) thermoplastic non-hydroxy-functional acrylic resin; b) hindered amine light stabilizer; c) UV absorber; d) amorphous, untreated fumed silica, flattener; and e) one or more organic solvents.

Claims

exact text as granted — not AI-modified
1 . A matting paste composition comprising:
 a) thermoplastic non-hydroxy-functional acrylic resin having a weight average molecular weight in the range from about 50,000 to about 100,000 and present in an amount in the range of from about 15 to about 35%, based on the total weight of the matting paste composition;   b) hindered amine light stabilizer present in an amount in the range of from about 1.5 to about 8%, based on the total weight of the matting paste composition;   c) UV absorber present in an amount in the range of from about 2 to about 8%, based on the total weight of the matting paste composition;   d) amorphous, untreated fumed silica, flattener present in an amount in the range of from about 7 to about 13%, based on the total weight of the matting paste composition; and   e) one or more organic solvents present in an amount in the range of from about 40 to about 60%, based on the total weight of the matting paste composition.   
     
     
         2 . The matting paste according to  claim 1 , wherein the matting paste composition is free of extender pigments. 
     
     
         3 . The matting paste according to  claim 1 , further comprising an additive selected from the group consisting of castor oil, a low Tg acrylic or polyester, and combinations thereof. 
     
     
         4 . The matting paste according to  claim 1 , wherein the thermoplastic non-hydroxy-functional acrylic resin is selected from the group consisting of MMA, MMA/BMA copolymer, and mixtures thereof. 
     
     
         5 . The matting paste according to  claim 1 , wherein the thermoplastic non-hydroxy-functional acrylic resin has a Tg in the range of from 50-100° C. 
     
     
         6 . The matting paste according to  claim 1 , wherein the hindered amine light stabilizer is selected from the group consisting of Bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate, methyl (1,2,2,6,6-pentamethyl-4-piperidyl)sebacate, and combinations thereof. 
     
     
         7 . The matting paste according to  claim 1 , wherein the UV absorber is a benzotriazol type absorber. 
     
     
         8 . The matting paste according to  claim 1 , wherein the organic solvent is selected from the group consisting of t-butyl acetate, PCBTF, MAK, EEP, and combinations thereof. 
     
     
         9 . A liquid coating composition comprising the matting paste composition according to  claim 1 . 
     
     
         10 . A liquid coating composition according to  claim 9 , wherein the coating composition is a 2K polyurethane coating having a gloss in the range of 0 to 60 gloss units at 60° angle. 
     
     
         11 . A liquid coating composition according to  claim 10 , wherein the coating composition is chosen from a topcoat or a clearcoat.

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