Photoinitiators and UV-crosslinkable acrylic polymers for pressure sensitive adhesives
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08F-130/08
C08F-220/10
출원번호
UP-0024570
(2004-12-29)
등록번호
US-7745505
(2010-07-19)
발명자
/ 주소
Liu, Yuxia
Bull, Darwin Scott
출원인 / 주소
Henkel AG & Co. KGaA
대리인 / 주소
Piotrowski, James E.
인용정보
피인용 횟수 :
1인용 특허 :
21
초록▼
UV-crosslinkable acrylic hotmelt pressure sensitive adhesives comprising acrylic and vinyl monomers, and a polymerizable UV photoinitiator. The photoinitiator comprises a spacer comprising both ethylene oxide and urethane, or urea, carbonate, or siloxane functional groups. The ethylene oxide is dire
UV-crosslinkable acrylic hotmelt pressure sensitive adhesives comprising acrylic and vinyl monomers, and a polymerizable UV photoinitiator. The photoinitiator comprises a spacer comprising both ethylene oxide and urethane, or urea, carbonate, or siloxane functional groups. The ethylene oxide is directly bonded to the chromophore (e.g., benzophenone) moiety, while the urethane (or urea, carbonate, siloxane) is closely linked to the polymerizable moiety (e.g., styrenic C═C double bond).
대표청구항▼
The invention claimed is: 1. A photoinitiator having the structural formula where Z is S, O, CH2, or NH, R1-8 are independently H, Cl, Br, I, F, C1-24 alkoxy, C1-24 alkyl, or aryl; and wherein at least one of R1-8 must comprise a —W—X—Y group, where W is a C1-12 oxyalkylene
The invention claimed is: 1. A photoinitiator having the structural formula where Z is S, O, CH2, or NH, R1-8 are independently H, Cl, Br, I, F, C1-24 alkoxy, C1-24 alkyl, or aryl; and wherein at least one of R1-8 must comprise a —W—X—Y group, where W is a C1-12 oxyalkylene, X comprises tetramethyldisiloxane, and Y is —R9—C(R10)═CH2, where R9 is a linear or branched C2-10 alkylene or C2-10oxyalkylene, or arylene or derivative thereof, and R10 is H or CH3. 2. A photoinitiator having the structural formula where n=1-12. 3. The photoinitiator of claim 2 wherein n=1. 4. A photoinitiator having the structural formula where n=1-12. 5. The photoinitiator of claim 4 wherein n=1. 6. A photoinitiator having the structural formula 7. A UV curable acrylic polymer comprising the following monomer components: (a) from about 70 to about 95 parts by weight of acrylic or methacrylic acid derivative of the formula CH2═CH(R1)(COOR2), where R1 is H or CH3 and R2 is a C1-20 alkyl chain, (b) 0 to about 30 parts by weight of an acrylic or methacrylic acid derivative of the formula CH2═CH(R1)(COOR2), where R1 is H or CH3 and R2 is an hydroxyl-functional C1-20 alkyl chain, (c) 0 to about 20 parts by weight of an acrylic or vinyl compound containing a carboxy or anhydride functional group, (d) 0 to about 30 parts by weight of acrylic or vinyl compounds containing an amine, amide, urethane, epoxide or isocyanate functional group and (e) from about 0.01 to about 15 parts by weight of a photoinitiator having the structural formula where n=1-12. 8. A UV curable acrylic polymer comprising the following monomer components: (a) from about 70 to about 95 parts by weight of acrylic or methacrylic acid derivative of the formula CH2═CH(R1)(COOR2), where R1 is H or CH3 and R2 is a C1-20 alkyl chain, (b) 0 to about 30 parts by weight of an acrylic or methacrylic acid derivative of the formula CH2═CH(R1)(COOR2), where R1 is H or CH3 and R2 is an hydroxyl-functional C1-20 alkyl chain, (c) 0 to about 20 parts by weight of an acrylic or vinyl compound containing a carboxy or anhydride functional group, (d) 0 to about 30 parts by weight of acrylic or vinyl compounds containing an amine, amide, urethane, epoxide or isocyanate functional group and (e) from about 0.01 to about 15 parts by weight of a photoinitiator having the structural formula where n=1-12. 9. A UV curable acrylic polymer comprising the following monomer components: (a) from about 70 to about 95 parts by weight of acrylic or methacrylic acid derivative of the formula CH2═CH(R1)(COOR2), where R1 is H or CH3 and R2 is a C1-20 alkyl chain, (b) 0 to about 30 parts by weight of an acrylic or methacrylic acid derivative of the formula CH2═CH(R1)(COOR2), where R1 is H or CH3 and R2 is an hydroxyl-functional C1-20 alkyl chain, (c) 0 to about 20 parts by weight of an acrylic or vinyl compound containing a carboxy or anhydride functional group, (d) 0 to about 30 parts by weight of acrylic or vinyl compounds containing an amine, amide, urethane, epoxide or isocyanate functional group and (e) from about 0.01 to about 15 parts by weight of a photoinitiator having the structural formula 10. A UV curable hot melt pressure sensitive adhesive comprising (a) from about 70 to about 95 parts by weight of methyl acrylate, methyl methacrylate, n-butyl acrylate, 2-ethylhexyl acrylate, and/or isooctyl acrylate, (b) 0 to about 30 parts by weight of hydroxyethyl acrylate and/or hydroxypropyl acrylate, (c) 0 to about 20 parts by weight of acrylic acid or maleic anhydride, (d) 0 to about 30 parts by weight of 1 -vinyl-2-pyrrolidinone (NVP), t-octyl acrylamide, 2-(tert-butylamino)ethyl methacrylate (t-BAEM), acrylamide, glycidyl methacrylate, 3-Isopropenyl-α, α-dimethylbenzyl isocyanate (m-TMI®), or a compound of the following formula and (e) from about 0.01 to about 15 parts by weight of a photoinitiator selected from the group consisting of and where n=1-12. 11. The adhesive of claim 10 wherein component (e) of the acrylic polymer is where n=1-12. 12. The adhesive of claim 10 wherein component (e) of the acrylic polymer is where n=1-12. 13. The adhesive of claim 10, wherein component (e) of the acrylic polymer is
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이 특허에 인용된 특허 (21)
Babu Gaddam N. (Woodbury MN) Bennett Greggory S. (Hudson WI) Chen Kejian (Woodbury MN) Heilmann Steven M. (Afton MN) Smith ; II Howell K. (Grant Township MN) Winslow Louis E. (Stillwater MN), Acrylamido functional disubstituted acetyl aryl ketone photoinitiators.
Rehmer Gerd (Bobenheim-Roxheim DEX) Boettcher Andreas (Nussloch DEX) Portugall Michael (Wachenheim DEX), Benzophenone derivatives and their preparation.
Boettcher Andreas (Nussloch DEX) Schwartz Manfred (Ludwigshafen DEX), Compounds containing carbonate groups and carbonyl groups and the preparation and use thereof.
Colvin Howard A. (Akron OH) Cottman Kirkwood S. (Akron OH) Parker Dane K. (Massillon OH), Functionalized monomers from 1-(1-isocyanato-1-methylethyl)-3- or 4-(1-methylethenyl) benzene.
Winslow Louis E. ; Bennett Greggory S. ; Babu Gaddam N. ; Hattam Paul ; Tumey Michael L. ; Velamakanni Bhaskar V., Process for the production of an article coated with a crosslinked pressure sensitive adhesive.
Rehmer Gerd (Beindersheim DEX) Boettchher Andreas (Nussloch DEX) Auchter Gerhard (Duerkheim DEX), UV-crosslinkable materials based on (meth)acrylate polymers.
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