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公开(公告)号：US20170190843A1
公开(公告)日：2017-07-06
申请号：US15462017
申请日：2017-03-17
发明人： Jitendra Rathore
IPC分类号： C08G77/18 , C09D183/08 , C09D183/06 , C07F7/08 , C08G77/28
CPC分类号： C09D183/04 , C08G77/045 , C08G77/12 , C08G77/20 , C09D183/14 , C08L83/00 , C08K5/56 , C08K5/0025 , C08K5/132
摘要： Curable silsesquioxane polymers are described comprising a silsesquioxane polymer comprising reactive groups. The curable silsesquioxane polymer is free of ethylenically unsaturated groups. The silsesquioxane polymers may be homopolymers or copolymers. Also described are methods of preparing curable silsesquioxane polymer, articles comprising curable or cured compositions comprising the silsesquioxane polymers, and methods of curing.
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2.发明授权公开(公告)号：US10370564B2
公开(公告)日：2019-08-06
申请号：US15306200
申请日：2015-06-08
IPC分类号： C09J4/06 , C09J11/04 , C08F220/10 , C08G77/442 , C09J133/06 , C09J183/10 , C08K5/101
摘要： Pressure sensitive adhesive compositions are described comprising at least one low Tg ethylenically unsaturated monomer, and at least one silsesquioxane polymer crosslinker comprising a plurality of ethylenically unsaturated groups. The low Tg ethylenically unsaturated monomer typically has a Tg no greater than 10° C. In some embodiments, the composition comprises at least 50, 55, 60, 65, or 70 wt-% of low Tg ethylenically unsaturated monomer. The low Tg ethylenically unsaturated monomer is typically an alkyl (meth)acrylate comprising 4 to 20 carbon atoms. In another embodiment, an adhesive composition is described comprising a syrup. The syrup comprising i) a free-radically polymerizable solvent monomer; ii) a solute (meth)acrylic polymer comprising polymerized units derived from one or more alkyl (meth)acrylate monomers, and iii) at least one silsesquioxane polymer crosslinker comprising a plurality of ethylenically unsaturated groups. The free-radically polymerizable solvent monomer, polymerized units of the solute (meth)acrylic polymer, or a combination thereof comprise a low Tg ethylenically unsaturated monomer. Also described are pressure sensitive adhesive articles and method of preparing adhesive articles.
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公开(公告)号：US09957358B2
公开(公告)日：2018-05-01
申请号：US15508518
申请日：2015-09-16
发明人： Jitendra Rathore
IPC分类号： C08G77/28 , C08G77/18 , C08G75/12 , C08G75/045 , C09D181/02
CPC分类号： C08G77/28 , C08F283/12 , C08G75/045 , C08G75/12 , C08G77/14 , C08G77/18 , C08G77/44 , C09D181/02 , C09D183/06 , C09D183/08 , C09D183/10
摘要： Curable silsesquioxane polymers are described comprising a core comprising a first silsesquioxane polymer and an outer layer comprising a second silsesquioxane polymer bonded to the core. The silsesquioxane polymer of the core, outer layer, or combination thereof comprises reactive groups that are not ethylenically unsaturated groups. The first silsesquioxane polymer of the core is bonded to the second silsesquioxane polymer of the outer layer via silicon atoms bonded to three oxygen atoms. In some embodiments, the outer layer has a higher concentration of reactive groups than the core. In this embodiment, the core may be substantially free of reactive groups. In other embodiments, the core has a higher concentration of reactive groups than the core. In this embodiment, the outer layer may be substantially free of reactive groups. The core and outer layer each comprise a three-dimensional branched network of a different silsesquioxane polymer. The silsesquioxane polymers of the core and outer layer may be homopolymers or copolymers. Also described are methods of preparing curable silsesquioxane polymer comprising a core and outer layer bonded to the core, articles comprising curable or cured compositions comprising the silsesquioxane core/outer layer polymers, and methods of curing.
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公开(公告)号：US09957416B2
公开(公告)日：2018-05-01
申请号：US15462017
申请日：2017-03-17
发明人： Jitendra Rathore
IPC分类号： C08G77/20 , C09D183/04 , C09D183/14 , C08G77/04 , C08G77/12
CPC分类号： C09D183/04 , C08G77/045 , C08G77/12 , C08G77/20 , C09D183/14 , C08L83/00 , C08K5/56 , C08K5/0025 , C08K5/132
摘要： Curable silsesquioxane polymers are described comprising a silsesquioxane polymer comprising reactive groups. The curable silsesquioxane polymer is free of ethylenically unsaturated groups. The silsesquioxane polymers may be homopolymers or copolymers. Also described are methods of preparing curable silsesquioxane polymer, articles comprising curable or cured compositions comprising the silsesquioxane polymers, and methods of curing.
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5.发明申请公开(公告)号：US20170321088A1
公开(公告)日：2017-11-09
申请号：US15306200
申请日：2015-06-08
CPC分类号： C09J4/06 , C08F220/10 , C08G77/442 , C08K5/101 , C09J11/04 , C09J133/06 , C09J183/10 , C09J2201/606 , C09J2205/106 , C09J2433/00 , C09J2483/00
摘要： Pressure sensitive adhesive compositions are described comprising at least one low Tg ethylenically unsaturated monomer, and at least one silsesquioxane polymer crosslinker comprising a plurality of ethylenically unsaturated groups. The low Tg ethylenically unsaturated monomer typically has a Tg no greater than 10° C. In some embodiments, the composition comprises at least 50, 55, 60, 65, or 70 wt-% of low Tg ethylenically unsaturated monomer. The low Tg ethylenically unsaturated monomer is typically an alkyl (meth)acrylate comprising 4 to 20 carbon atoms. In another embodiment, an adhesive composition is described comprising a syrup. The syrup comprising i) a free-radically polymerizable solvent monomer; ii) a solute (meth)acrylic polymer comprising polymerized units derived from one or more alkyl (meth)acrylate monomers, and iii) at least one silsesquioxane polymer crosslinker comprising a plurality of ethylenically unsaturated groups. The free-radically polymerizable solvent monomer, polymerized units of the solute (meth)acrylic polymer, or a combination thereof comprise a low Tg ethylenically unsaturated monomer. Also described are pressure sensitive adhesive articles and method of preparing adhesive articles.
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