| 摘要 |
The invention relates to a radiation cured acrylate pressure sensitive adhesive composition modified with (I) about 1 to 30 weight percent of a coreacted siloxane, said siloxane represented by formula (I) wherein R1 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl; R2 are divalent linking groups which can be the same or different; R3 are monovalent moieties which can independently, be the same or different and are selected from the group consisting of alkyl, substituted alkyl, aryl substituted aryl, and -R2X; R4 are monovalent moieties which can independently be the same or different and are selected from the group consisting of alkyl, substituted alkyl, aryl, substituted aryl, and -R2X; X are monovalent moieties having ethylenic unsaturation which can be the same or different; U are divalent moieties which can be the same or different comprising a polyether segment selected from the group consisting of poly(ethylene oxide), poly(propylene oxide), poly(1,2-butylene oxide), and poly(tetramethylene oxide), wherein said polyether segments range in number average molecular weight from about 400 to about 10,000; R9 are divalent linking groups which can be the same or different; n is an integer of about 15 to about 300; r is an integer of 0 to 1; and s is an integer of 0 to 3; wherein said siloxane has an average of at least two -R2X groups; and wherein said radiation cured acrylate pressure sensitive adhesive composition has improved removability relative to the same composition cured without the coreactive multifunctional siloxane present.
|
