	US 12,325,765 B2
	Hydrophobic high heat optical acrylic copolymers
Jiaxin J. Ge, Lower Providence, PA (US); Sri R. Seshadri, Holland, PA (US); and Gary A. Hall, Oaklyn, NJ (US)
Assigned to TRINSEO EUROPE GMBH, Horgen (CH)
Appl. No. 17/600,981
Filed by ARKEMA FRANCE, Colombes (FR)
PCT Filed Apr. 2, 2020, PCT No. PCT/US2020/026377 § 371(c)(1), (2) Date Oct. 1, 2021, PCT Pub. No. WO2020/206113, PCT Pub. Date Oct. 8, 2020.
Claims priority of provisional application 62/829,183, filed on Apr. 4, 2019.
Prior Publication US 2022/0356281 A1, Nov. 10, 2022
Int. Cl. C08F 220/14 (2006.01); C08J 5/18 (2006.01); G02B 1/04 (2006.01)

CPC C08F 220/14 (2013.01) [C08J 5/18 (2013.01); G02B 1/04 (2013.01); C08F 2800/20 (2013.01); C08J 2333/12 (2013.01)]

12 Claims

1. A composition comprising a copolymer comprising:

a) from 0.1 to 10 weight percent monomer units comprising tert-butyl cyclohexyl methacrylate and 3,3,5-trimethylcyclohexyl(meth)acrylate, wherein said tert-butyl cyclohexyl methacrylate and 3,3,5-trimethylcyclohexyl(meth)acrylate monomer units have a trans/cis ratio of from 30/70 to 85/15;

b) at least 80 weight percent methylmethacrylate monomer units;

c) from 0 to 10 weight percent other monomer units copolymerizable with methylmethacrylate, wherein said other monomer units comprise from 0.01 to 10 weight percent of methacrylic acid;

wherein said copolymer has a Tg of from 116° C. to 140° C.