Cationic UV-crosslinkable acrylic polymers for pressure sensitive adhesives
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09J-137/00
C08F-220/28
C09J-007/02
C09J-133/06
C09J-143/04
C09J-133/14
출원번호
US-0309420
(2014-06-19)
등록번호
US-9469794
(2016-10-18)
발명자
/ 주소
Liu, Yuxia
Palasz, Peter
Paul, Charles W.
Foreman, Paul B.
출원인 / 주소
HENKEL IP & HOLDING GMBH
대리인 / 주소
Lehmann, Sun Hee
인용정보
피인용 횟수 :
0인용 특허 :
14
초록▼
An ultraviolet (UV) crosslinkable acrylic pressure sensitive adhesive comprises an acrylic copolymer and a cationic photoinitiator. The acrylic copolymer comprises pendant reactive functional groups. The pressure sensitive adhesive formed from the acrylic copolymer with the pendant reactive function
An ultraviolet (UV) crosslinkable acrylic pressure sensitive adhesive comprises an acrylic copolymer and a cationic photoinitiator. The acrylic copolymer comprises pendant reactive functional groups. The pressure sensitive adhesive formed from the acrylic copolymer with the pendant reactive functional groups result in high green strength and/or high temperature holding strength of the adhesive.
대표청구항▼
1. An ultra-violet curable pressure sensitive adhesive comprising an acrylic polymer and a cationic photoinitiator, wherein said acrylic polymer comprises: (i) an acrylic monomer consisting of an acrylic or methacrylic acid derivative of the formula CH2═CH(R1)(COOR2), wherein R1 is H or CH3 and R2 i
1. An ultra-violet curable pressure sensitive adhesive comprising an acrylic polymer and a cationic photoinitiator, wherein said acrylic polymer comprises: (i) an acrylic monomer consisting of an acrylic or methacrylic acid derivative of the formula CH2═CH(R1)(COOR2), wherein R1 is H or CH3 and R2 is C1-20 alkyl chain;(ii) a monomer, wherein the monomer comprises a pendant reactive functional groups selected from (1) mono-substituted oxirane, and(2) cycloaliphatic epoxide having the formula: or mixtures thereof, andwherein said monomer contains from about 0.001 to about 0.015 equivalent per 100 g of said acrylic polymer; andwherein said acrylic polymer (a) is essentially free of multi-(meth)acrylate (b) has a Tg value less than 0° C., and (c) has a weight average molecular weight from about 50,000 to about 1,000,000 g/mol. 2. The ultra-violet curable pressure sensitive adhesive of claim 1 wherein the (ii) monomer contain from about 0.002 to about 0.010 equivalent per 100 g of the acrylic polymer. 3. The ultra-violet curable pressure sensitive adhesive of claim 1 wherein the (ii) monomer is a cycloaliphatic epoxide having the formula: whereinR1 is O, S, C═O, or linear, branched, or cyclic alkylene, or oxyalkylene, arylene,R2 is linear, branched, and cyclic alkyl or alkoxy, aryl, H, halogen, C═O, or part of R1 as fused cycloaliphatic ring through a covalent bond connection,R3 is (CH2)n, n=0-3,X is acrylate or methacrylate, or comprises a —W—Y group, whereW is O, S, amide, carbonate, urethane, urea, siloxane or a combination thereof, andY is —R4—C(R5)═CH2, where R4 is a linear or branched C2-10 alkylene, C2-10oxyalkylene, C═O, or arylene or derivative thereof, and R5 is H or CH3. 4. The ultra-violet curable pressure sensitive adhesive of claim 1 wherein the cycloaliphatic epoxide is: or mixtures thereof.
Kuwana Akihiro (Otake JPX) Honda Kimihide (Himeji JPX) Koga Kunio (Himeji JPX), Purified 3,4-epoxycyclohexyl methyl (meth)acrylate, a process for the preparation thereof and a 3,4-epxoycyclohexyl meth.
Marie-Christine Cotting FR; Gerard Joubert FR; Olivier Loubet FR, Use of silicone compositions cross-linkable by cationic process under UV radiation and of an onium borate type photoinitiator for coating flat joints, particularly cylinder head gaskets.
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