US 20150119536Al  c19)  United States  c12)  Patent Application Publication  Liu  c10)  Pub. No.: US 2015/0119536 Al  (43)  Pub. Date:  Apr. 30, 2015  (54)  SILICONE-ACRYLIC COPOLYMER  (71)  Applicant:  HENKEL US IP LLC,  Rocky Hill, CT  (US)  (72)  Inventor:  Yuxia Liu,  Dayton, NJ (US)  (21)  Appl. No.:  14/593,205  (22)  Filed:  Jan. 9, 2015  (63)  Continuation of application No. 14/155,452, filed on  Jan. 15, 2014, now Pat. No. 8,962,748, which is a  continuation of application No. 13/617,968, filed on  Sep. 14, 2012, now Pat. No. 8,664,329, which is a  continuation ofapplication No. PCT/US2011/032609,  filed on Apr. 15, 2011.  (60)  Provisional application No. 61/327,141, filed on Apr.  23, 2010.  (52)  U.S. Cl.  CPC ......................................  C08G  77138  (2013.01)  (51)  Int. Cl.  C08G  77138  (2006.01)  Publication Classification  (57)  ABSTRACT  Related U.S. Application Data  A novel silicone-acrylic copolymer which comprises a  covalently bonded silicone polymer with an acrylic polymer  through the -Si-O-Si- linkage is described. The sili› cone-acrylic copolymer is a reaction product of (a) a silicone  polymer, (bi) a mixture of acrylic monomers wherein at least  one acrylic monomer comprises a silane (meth)acrylic mono› mer and/or a siloxane (meth)acrylic macromer with a radical  initiator to form an acrylic prepolymer or (bii) an acrylic  polymer which comprises a silane or a siloxane functional  group; and ( c) a scrambling catalyst, wherein the ratio of the  silicone polymer (a) and the mixture ofacrylic monomers (bi)  or polymer (bii) is from 50: 1 to 1 :50. The silicone-acrylic  copolymer is useful as an adhesive, sealant, coating, and the  like. 