Resin composition and manufacturing method of coating layer using the same

Abstract

A resin composition according to an exemplary embodiment of the present disclosure includes a first polyol represented by Chemical Formula 1, a second polyol represented by Chemical Formula 2, and a polyisocyanate, wherein the first polyol and the second polyol have a linear structure without a side chain. each of Y 1 to Y 4 is H or OH—, at least one of Y 1 and Y 2 is OH—, at least one of Y 3 and Y 4 is OH—, each of X 1 to X 3 is independently a C 1 -C 20 alkyl group, the alkyl group includes or does not include an unsaturated bond, —CH 2 — in the alkyl group may be substituted or unsubstituted with —CHOH—, and each of n and m is independently 1 to 200.

What is claimed is: 
     
         1 . A resin composition comprising:
 a first polyol represented by Chemical Formula 1;   a second polyol represented by Chemical Formula 2; and   a polyisocyanate,   wherein the first polyol and the second polyol have a linear structure without a side chain,   
       
         
           
           
               
               
           
         
         wherein, in Chemical Formula 1 and Chemical Formula 2, each of Y 1  to Y 4  is H or OH—, at least one selected from Y 1  and Y 2  is OH—, at least one selected from Y 3  and Y 4  is OH—, 
         each of X 1  to X 3  is independently selected from a C 1 -C 20  alkyl group not including an unsaturated bond, and a C 1 -C 20  alkyl group including an unsaturated bond, —CH 2 — in the alkyl group may be substituted or unsubstituted with —CHOH—, and 
         each of n and m is independently 1 to 200. 
       
     
     
         2 . The resin composition of  claim 1 , further comprising:
 a curing agent and an antistatic agent,   wherein the curing agent comprises isocyanate.   
     
     
         3 . The resin composition of  claim 2 , wherein:
 the curing agent comprises a mixture of dodecanedioic acid and triglycidyl isocyanurate.   
     
     
         4 . The resin composition of  claim 2 , wherein:
 the antistatic agent comprises a compound represented by Chemical Formula 3,
   M-A  Chemical Formula 3
 
   wherein, in Chemical Formula 3, M is a metal element, and A is at least one selected from a chloride anion (Cl − ), a bromide anion (Br − ), an iodide anion (I − ), a tetrachloroaluminate anion (AlCl 4   − ), a heptachlorodialuminate anion (Al 2 Cl 7   − ), a tetrafluoroborate anion (BF 4   − ), a hexafluorophosphate anion (PF 6   − ), a perchlorate anion (ClO 4   − ), a nitrate anion (NO 3   − ), an acetate anion (CH 3 COO − ), a trifluoroacetate anion (CF 3 COO − ), a methane sulfonate anion (CH 3 SO 3   − ), a trifluoromethanesulfonate anion (CF 3 SO 3   − ), a p-toluenesulfonate anion (p-CH 3 C 6 H 4 SO 3   − ), a bis (fluorosulfonyl) imide anion ((FSO 22 N − ), a bis (trifluoromethanesulfonyl) imide anion ((CF 3 SO 2 ) 2 N − ), a tris (trifluoromethanesulfonyl) (CF 3 SO 2 ) 3 C − ), a hexafluoroacenate anion (AsF 6   − ), a hexafluoroantimonate anion (SbF 6   − ), a hexafluoroniobate anion (NbF 6   − ), a hexafluorotantalate anion (TaF 6   − ), dimethylphosphinate (CH 32 POO − ), a dicyanamide anion ((CN) 2 N − ), a thiocyanic anion (SCN—), a perfluorobutane sulfonate anion (C 4 F 9 SO 3   − ), a bis (pentafluoroethanesulfonyl) imide anion ((C 2 F 5 SO 2 ) 2 N − ) and a perfluorobutanoate anion (C 3 F 7 COO − ).   
     
     
         5 . The resin composition of  claim 4 , wherein:
 the antistatic agent is a lithium-based antistatic agent comprising a lithium element.   
     
     
         6 . The resin composition of  claim 1 , further comprising:
 a tin-based catalyst.   
     
     
         7 . The resin composition of  claim 1 , wherein:
 the second polyol is present in an amount of about 10 to about 20 parts by weight, and the polyisocyanate is present in an amount of about 3 to about 8 parts by weight, based on 100 parts by weight of the first polyol.   
     
     
         8 . The resin composition of  claim 1 , further comprising:
 at least one solvent selected from the group consisting of toluene, acetone, cyclohexanone, ethyl cellusolve, ethyl acetate, isopropyl alcohol, and ethylene glycol monomethyl ether.   
     
     
         9 . The resin composition of  claim 1 , further comprising:
 a heat stabilizer,   wherein the heat stabilizer comprises a phenolic compound, a phospho compound, or a thio compound.   
     
     
         10 . A method of manufacturing a coating layer, the method comprising:
 forming a resin composition by mixing a first polyol represented by Chemical Formula 1, a second polyol represented by Chemical Formula 2, and a polyisocyanate together with a first solvent;   coating the resin composition on a substrate; and   aging the resin composition,   wherein the first polyol and the second polyol have a linear structure without a side chain,   
       
         
           
           
               
               
           
         
         wherein, in Chemical Formula 1 and Chemical Formula 2, each of Y 1  to Y 4  is H or OH—, at least one of Y 1  and Y 2  is OH—, at least one of Y 3  and Y 4  is OH—, 
         each of X 1  to X 3  is independently selected from an unsubstituted C 1 -C 20  alkyl group, and a C 1 -C 20  alkyl group substituted with at least one selected from an unsaturated bond, —CH 2 — in the alkyl group may be substituted or unsubstituted with —CHOH—, and 
         each of n and m is independently 1 to 200. 
       
     
     
         11 . The manufacturing method of a coating layer of  claim 10 , wherein
 forming the resin composition further comprising   mixing a mixture of a second solvent different from the first solvent, a curing agent and an antistatic agent mixture with a mixture of the first polyol, the second polyol, the polyisocyanate and the first solvent.   
     
     
         12 . The manufacturing method of a coating layer of  claim 11 , further comprising
 heating the mixture of the first polyol, the second polyol, the polyisocyanate and the first solvent to remove isocyanate bonds in the mixture of the first polyol, the second polyol, the polyisocyanate, and the first solvent.   
     
     
         13 . The manufacturing method of a coating layer of  claim 12 , wherein
 the mixture of the first polyol, the second polyol, the polyisocyanate and the first solvent is heated at about 60° C. to about 90° C.   
     
     
         14 . The manufacturing method of a coating layer of  claim 13 , wherein
 a heat stabilizer is added to the heated mixture of the first polyol, the second polyol, the polyisocyanate and the first solvent.   
     
     
         15 . The manufacturing method of a coating layer of  claim 10 , wherein
 the aging the resin composition includes heating the resin composition at about 40° C. to about 140° C.   
     
     
         16 . The manufacturing method of a coating layer of  claim 10 , wherein
 the aging the resin composition includes a plurality of heating acts.   
     
     
         17 . The manufacturing method of a coating layer of  claim 16 , wherein
 The aging the resin composition includes a first heating act to a sixth heating act which are sequentially performed.   
     
     
         18 . The manufacturing method of a coating layer of  claim 17 , wherein
 a process temperature of the first heating act, the second heating act and the sixth heating act is less than a process temperature of the third heating act to the fifth heating act.