US 12,338,383 B2
3D-printed polyrotaxane additives and compositions
Hasmukh A. Patel, Katy, TX (US); Ali Z. Khater, Houston, TX (US); Peter Boul, Houston, TX (US); Pulickel M. Ajayan, Houston, TX (US); and Muhammad M. Rahman, Houston, TX (US)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA); and William Marsh Rice University, Houston, TX (US)
Filed on Dec. 14, 2021, as Appl. No. 17/550,631.
Prior Publication US 2023/0183534 A1, Jun. 15, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C09K 3/10 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C08G 83/00 (2006.01); C08K 3/36 (2006.01); C08L 63/00 (2006.01)
CPC C09K 3/1006 (2013.01) [B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C08G 83/007 (2013.01); C08K 3/36 (2013.01); C08L 63/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A sealant composition comprising:
about 65 wt % to about 95 wt % of a UV-cured epoxy resin;
about 5 wt % to about 20 wt % of a fumed silica; and
about 1 wt % to about 7.5 wt % of a sliding-ring polymer additive comprising at least two molecules of a polyrotaxane selected from the group consisting of an acrylate-terminated polyrotaxane and a cross-linked polyrotaxane bead, wherein the polyrotaxane comprises:
a linear polymer;
at least one ring compound, wherein the linear polymer is threaded through the opening of the ring compound; and
stopper groups disposed at both end terminals of the linear polymer;
wherein the cross-linked polyrotaxane bead is surface-functionalized with epoxide rings; and
wherein the sealant composition exhibits improved tensile strength as compared to the same composition without the sliding-ring polymer additive.