US 12,331,146 B2
Polymer compositions containing grafted polymeric networks and processes for their preparation and use
Brian Aitken, Jacksonville, FL (US); Charles Scales, St. Augustine, FL (US); Scott Joslin, Ponte Vedra Beach, FL (US); Yong Zhang, Jacksonville, FL (US); Dola Sinha, Jacksonville, FL (US); Shivkumar Mahadevan, Jacksonville, FL (US); Patricia Martin, Jacksonville, FL (US); Fang Lu, St. Augustine, FL (US); Donnie Duis, Jacksonville, FL (US); and Stephen C. Arnold, Jacksonville, FL (US)
Assigned to Johnson & Johnson Vision Care, Inc., Jacksonville, FL (US)
Filed by Johnson & Johnson Vision Care, Inc., Jacksonville, FL (US)
Filed on Oct. 12, 2023, as Appl. No. 18/485,795.
Application 18/485,795 is a continuation of application No. 17/242,948, filed on Apr. 28, 2021, granted, now 11,820,850.
Application 17/242,948 is a continuation of application No. 15/656,033, filed on Jul. 21, 2017, granted, now 11,021,558, issued on Jun. 1, 2021.
Claims priority of provisional application 62/371,362, filed on Aug. 5, 2016.
Prior Publication US 2024/0043598 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 283/12 (2006.01); C08F 290/06 (2006.01); C08J 7/16 (2006.01); C08L 51/08 (2006.01); C09B 69/10 (2006.01); G02B 1/04 (2006.01)
CPC C08F 283/124 (2013.01) [C08F 290/068 (2013.01); C08J 7/16 (2013.01); C08L 51/085 (2013.01); C09B 69/109 (2013.01); G02B 1/043 (2013.01); C08L 2201/50 (2013.01); C08L 2203/02 (2013.01)] 18 Claims
 
1. A polymer composition formed by a process comprising:
(a) providing a first reactive composition containing: (i) a polymerization initiator that is capable, upon a first activation, of forming two or more free radical groups, at least one of which is further activatable by subsequent activation; (ii) one or more ethylenically unsaturated compounds; and (iii) a crosslinker;
(b) subjecting the first reactive composition to a first activation step such that the first reactive composition polymerizes therein to form a crosslinked substrate network containing a covalently bound activatable free radical initiator;
(c) combining the crosslinked substrate network with a second reactive composition containing one or more ethylenically unsaturated compounds; and
(d) activating the covalently bound activatable free radical initiator of the crosslinked substrate network such that the second reactive composition polymerizes therein with the crosslinked substrate network to form a grafted polymeric network and a byproduct polymer.