Thermoplastic formulations for enhanced paintability, toughness and melt processability
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05D-007/08
B05D-007/00
출원번호
US-0616672
(2012-09-14)
등록번호
US-9604251
(2017-03-28)
발명자
/ 주소
Lizotte, Jeremy Richard
Wilson, Caroline Joan
Sharpe, Jr., Emerson Eston
Helton, Tony Wayne
Iyer, Subramanian Easwaran
Mercer, Jr., James Wilson
Salyer, David Gayle
출원인 / 주소
Eastman Chemical Company
대리인 / 주소
Taylor, Tammye L.
인용정보
피인용 횟수 :
0인용 특허 :
133
초록▼
The present disclosure relates to polymer coating compositions that comprise at least one thermoplastic resin, at least one opacity modifier, at least one gloss modifier, and at least one impact modifier, articles at least partially coated with the polymer coating composition, paintable polymer coat
The present disclosure relates to polymer coating compositions that comprise at least one thermoplastic resin, at least one opacity modifier, at least one gloss modifier, and at least one impact modifier, articles at least partially coated with the polymer coating composition, paintable polymer coated articles and method for making the polymer coated and painted polymer coated articles. These compositions exhibit enhanced paintability (including paintability with water-based paints) and mechanical properties for fabrication (cutting, nailing, routing, etc.), while maintaining acceptable visual appearance, such as, for example, opacity, gloss, surface appearance, and surface roughness.
대표청구항▼
1. A method of making an article comprising a wood or wood composite substrate at least partially covered with a thermoplastic resin coating comprising a polyester, the method comprising; (a) melt extruding the polyester coating wherein the polyester has a solubility parameter ranging from about 9.4
1. A method of making an article comprising a wood or wood composite substrate at least partially covered with a thermoplastic resin coating comprising a polyester, the method comprising; (a) melt extruding the polyester coating wherein the polyester has a solubility parameter ranging from about 9.4 to about 14.0 (cal/cm3)0.5 onto the wood or wood composite substrate; and(b) applying a water-based paint covering to at least a portion of the polyester coating to form a paint coating;wherein the thermoplastic resin has a Tg greater than about 70° C. and less than about 150° C.; andwherein the paint coating on the polyester coating has a performance score ranging from 6 to 10, andwherein the performance score is the sum of a cross hatch value and a tape line test score. 2. The method according to claim 1, wherein the polyester coating is abraded with a blasting media to form an abraded polyester resin surface before the paint coating is applied. 3. The method according to claim 2, wherein the abraded polyester resin surface has a surface roughness ranging from 10 to 370 micro inches. 4. The method according to claim 3, wherein the blasting media is granular. 5. The method according to claim 3, wherein the blasting media is selected from the group of aluminum oxide, crushed glass, silicon carbide, steel grit, walnut shells, sand, jet mag, and calcium carbonate. 6. The method according to claim 2, wherein the performance score of the paint on the abraded polyester resin surface has a cross-hatch value of at least 3. 7. The method according to claim 2, wherein the performance score of the paint on the abraded polyester resin surface has a tape line test score of at least 3. 8. The method according to claim 2, wherein the performance score of the paint on the abraded polyester resin surface has a scratch adhesion value at least 50% higher than the scratch adhesion value on the untreated surface. 9. The method according to claim 1, where the polyester comprises: (i) an acid component comprising: (a) at least 70 mole % of acid residues from terephthalic acid, derivatives of terephthalic acid and mixtures thereof;(b) from 0 to 30 mole % of acid residues from aromatic dicarboxylic acids; and(c) from 0 to 10 mole % of acid residues from aliphatic dicarboxylic acids having up to 20 carbon atoms;(ii) a glycol component comprising: (a) from 20 to 70 mole % of glycol residues from cyclohexanedimethanol;(b) from 0 to 80 mole % of glycol residues from ethylene glycol; and(c) from 0 to 80 mole % of glycol residues from glycols having up to 20 carbon atoms,wherein the acid residues are based on 100 mole % of acid residues and the glycol residues are based on 100 mole % of glycol residues. 10. The method according to claim 1, wherein the thermoplastic resin coating comprises: (i) an acid component comprising: (a) at least 70 mole % of acid residues from terephthalic acid, deriavatives of terephthalic acid and mixtures thereof;(b) from 0 to 30 mole % of acid residues from aromatic dicarboxylic acids; and(c) from 0 to 10 mole % of acid residues from aliphatic dicarboxylic acids having up to 20 carbon atoms; and(ii) a glycol component comprising: (a) from 20 to 70 mole % of glycol residues from cyclohexanedimenthanol;(b) from 0 to 80 mole % of glycol residues from ethylene glycol; and(c) from 0 to 80 mole % of glycol residues from glycols having up to 20 carbon atoms,wherein the acid residues are based on 100 mole % of acid residues and the glycol residues are based on 100 mole % of glycol residues. 11. The method according to claim 1, wherein the thermoplastic resin coating comprises: (a) 30% by weight to 70% by weight of at least one copolyester;(b) 1% by weight to 10% by weight of titanium dioxide;(c) 10% by weight to 40% by weight of calcium carbonate; and(d) 5% by weight to 20% by weight of at least one impact modifier comprising at least one polymer chosen from polybutadiene, polyisoprene, polyurethanes, polyethers, polyesters, polyacrylates, and polyolefins, and copolymers thereof,wherein the weight percents are based on the total weight of the coating.
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