US 11,702,511 B2
Reactive poly(fluoroalkyl-functional siloxane) oligomers, process for forming the same, and compositions using the same
Hao Shen, Verona, NJ (US); Antonio Chaves, Chappaqua, NY (US); Martin Wusik, Danbury, CT (US); and Amy Hua McKinstry, Danbury, CT (US)
Assigned to Momentive Performance Materials Inc., Waterford, NY (US)
Filed by Momentive Performance Materials Inc., Waterford, NY (US)
Filed on Oct. 16, 2020, as Appl. No. 17/72,160.
Claims priority of provisional application 62/923,022, filed on Oct. 18, 2019.
Prior Publication US 2021/0115195 A1, Apr. 22, 2021
Int. Cl. C08G 77/24 (2006.01); C08G 77/385 (2006.01); C08G 77/08 (2006.01); C09D 183/08 (2006.01); C07F 7/08 (2006.01)
CPC C08G 77/385 (2013.01) [C08G 77/08 (2013.01); C09D 183/08 (2013.01); C07F 7/081 (2013.01); C07F 7/0836 (2013.01)] 17 Claims
 
1. A poly(fluoroalkyl-functional siloxane) oligomer having the general formula (I):
T1aT2bT3c  (I)
wherein
T1 is independently RF-Q-SiX2O1/2;
T2 is independently RF-Q-SiXO2/2;
T3 is independently RF-Q-SiO3/2;
each RF is independently CnF(2n+1) group where n is from 1 to 16;
each Q is independently a divalent linear or branched alkylene group containing from 1 to 6 carbon atoms or a divalent linear or branched alkylene group containing from 1 to 6 carbon atoms and an oxygen atom to form an ether group or an oxo group and amino group to form an amidoalkylene group;
each X is independently a hydroxy group or a hydrolyzable group; and
where the oligomer of formula (I) is selected from:
(a) a branched poly(fluoroalkyl-functional siloxane) oligomer wherein a is equal to 2+c, b is form 1 to 10, and c is from 1 to 10;
(b) a monocyclic poly(fluoroalkyl-functional siloxane) oligomer wherein a is an integer from 1 to 10, b is an integer from 1 to 10, and c is equal to a; or
(c) a polycyclic poly(fluoroalkyl-functional siloxane) oligomer of the formula (IV):

OG Complex Work Unit Chemistry
wherein
each RF is CnF(2n+1) group where n is from 1 to 16;
Q in formula (IV) is a divalent linear or branched alkylene group containing from 1 to 6 carbon atoms;
X in formula (IV) is independently a hydroxy group or an alkoxy group containing 1 to 6 carbon atoms; and
j is an integer from 1 to 5, k is an integer from 0 to 5, and l is an integer from 0 to 5, with the proviso that the sum of j+k+l is from 2 to 10;
with the provisos that
(i) a half oxygen atom bonded to one silicon atom in a T1, T2, or T3 unit is paired with a half oxygen atom bonded to a different silicon atom in a T1, T2, or T3 unit to form a Si—O—Si bond; and
(ii) the sum of a+b+c is from 5 to 32.