[특허]Hardcoats having low surface energy and low lint attraction

[미국특허] Hardcoats having low surface energy and low lint attraction 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-009/00 C09D-133/06 C09D-133/16 C09D-143/04
출원번호	US-0672356 (2008-08-19)
등록번호	US-8728623 (2014-05-20)
국제출원번호	PCT/US2008/073536 (2008-08-19)
§371/§102 date	20100205 (20100205)
국제공개번호	WO2009/029438 (2009-03-05)
발명자 / 주소	Pokorny, Richard J. Klun, Thomas P.
출원인 / 주소	3M Innovative Properties Company
대리인 / 주소	Fischer, Carolyn A.
인용정보	피인용 횟수 : 0 인용 특허 : 34

초록 ▼

Articles such as optical displays and protective films, comprising a (e.g. light transmissive) substrate having a surface layer comprising the reaction product of a mixture comprising a hydrocarbon-based hardcoat composition and at least one perfluoropolyether urethane additive. The surface layer exhibits low lint attraction in combination with high contact angles. Hardcoat coating compositions comprising a perfluoropolyether urethane additive and a silicone (meth)acrylate additive are also described.

대표청구항 ▼

1. An article comprising a substrate having a surface layer comprising the reaction product of a mixture comprising i) at least 75 wt-% of a hydrocarbon-based hardcoat composition;ii) 0.05 wt-% to 5 wt-% of at least one perfluoropolyether urethane additive having a at least one free-radically reactive group; andiii) 0.5 wt-% to 20 wt-% of one or more free-radically polymerizable silicone (meth)acrylate additives;wherein the surface layer exhibits less than 20% haze according to the Cellulose Surface Attraction Test and an advancing contact angle with hexadecane of at least 50°. 2. The article of claim 1 wherein the surface layer exhibits less than 10% haze. 3. The article of claim 1 wherein the surface layer exhibits a static contact angle with water of at least 90°. 4. The article of claim 1 wherein the mixture further comprises surface modified inorganic oxide nanoparticles. 5. The article of claim 1 wherein the substrate is a light-transmissive substrate. 6. The article of claim 1wherein the surface layer has a thickness ranging from 0.5 microns to 25 microns. 7. The article of claim 1 wherein the article is an optical display. 8. The article of claim 1 wherein the article is a protective film. 9. The article of claim 1 wherein article further comprises an antistatic coating between the substrate and the surface layer. 10. The article of claim 1, wherein the hydrocarbon-based hardcoat composition further comprising a plurality of surface modified inorganic nanoparticles. 11. The article of claim 1, wherein said hydrocarbon-based hardcoat composition comprises a non-fluorinated (meth)acrylate crosslinker having at least three (meth)acrylate groups. 12. The article of claim 1 wherein ii) comprises a terminal group having at least two (meth)acryl groups. 13. The article of claim 1 wherein the perfluoropolyether urethane additive comprises reaction products of the formula: Ri—(NHC(O)XQRf)m, —(NHC(O)OQ(A)p)n; whereinR1 is the residue of a multi-isocyanate;X is O, S or NR, wherein R is H or an alkyl group having 1 to 4 carbon;Rf is a monovalent perfluoropolyether moiety comprising groups of the formula F(RfcO)xCdF2d—, wherein each Rfc is independently a fluorinated alkylene group having from 1 to 6 carbon atoms, each x is an integer greater than or equal to 2, and wherein d is an integer from 1 to 6;each Q is independently a connecting group having a valency of at least 2;A is a (meth)acryl functional group —XC(O)C(R2)═CH2 wherein R2 is an alkyl group of 1 to 4 carbonatoms or H or F;m is at least 1;n is at least 1;p is 2 to 6;m+n is 2 to 10; andwherein each group having subscripts m and n is attached to the Ri unit. 14. The article of claim 13 wherein said perfluoropolyether urethane additive comprises: 15. The article of claim 1 wherein the silicone (meth)acrylate additive is present at a concentration ranging from 5× to 10× the concentration of the perfluoropolyether urethane additive. 16. The article of claim 1 wherein the silicone (meth)acrylate additive comprises a polydimethylsiloxane backbone and an alkoxy side chain having a terminal (meth)acrylate group. 17. The article of claim 1 wherein the silicone (meth)acrylate has a residue content of less 12 wt-% according to thermal gravimetric analysis. 18. The article of claim 1 wherein the silicone (meth)acrylate additive is present at a concentration at least equal or greater to that of the perfluoropolyether urethane additive. 19. The article of claim 1 wherein the one or more free-radically polymerizable silicone (meth)acrylate additives are present in an amount no greater than 10 wt%. 20. The article of claim 1 wherein the one or more free-radically polymerizable silicone (meth)acrylate additives are present in an amount no greater than 5 wt%.

이 특허에 인용된 특허 (34) 인용/피인용 타임라인 분석

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Williams Brian H. (White Bear Lake MN) Young Chung-I (Roseville MN), Compositions for providing abherent coatings.
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Goldenberg Merrill (Teaneck NJ), Crosslinked copolymers and ophthalmic devices amde from vinylic macromers containing perfluoropolyalkylether and polyalk.
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Wright Robin E. ; Vesley George F., Free radical polymerization method.
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Savu Patricia M. (Maplewood MN) McAllister Jerome W. (Hudson WI), Low refractive index plastics for optical fiber cladding.
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Olson Paul E. (Stillwater MN), Low surface energy liner of perfluoropolyether.
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Ha Chau T. (St. Paul MN) Lamanna William M. (Stillwater MN), Optical recording disk having a sealcoat layer.
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Klun Thomas P. (St. Paul MN) Lu David D. (St. Paul MN) Robbins Aida F. (St. Paul MN), Radiation-curable protective coating composition.
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[미국특허] Hardcoats having low surface energy and low lint attraction 원문보기

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