	US 11,898,054 B2
	Actinic radiation-curable urethane/urea-containing aerospace coatings and sealants
Bruce Virnelson, Valencia, CA (US); Chandra Rao, Valencia, CA (US); and Renhe Lin, Stevenson Ranch, CA (US)
Assigned to PRC-DESOTO INTERNATIONAL, INC., Slymar, CA (US)
Filed by PRC-DeSoto International, Inc., Sylmar, CA (US)
Filed on Nov. 17, 2020, as Appl. No. 17/099,825.
Application 17/099,825 is a continuation of application No. 16/324,458, granted, now 10,883,016, previously published as PCT/US2017/045871, filed on Aug. 8, 2017.
Claims priority of provisional application 62/372,158, filed on Aug. 8, 2016.
Prior Publication US 2021/0071032 A1, Mar. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 175/14 (2006.01); C09J 175/16 (2006.01); C09D 175/16 (2006.01); C09J 175/14 (2006.01); C08G 18/52 (2006.01); C08G 18/76 (2006.01); C08G 18/79 (2006.01); C08G 18/10 (2006.01); C08G 18/38 (2006.01); C08G 18/28 (2006.01); C08G 18/75 (2006.01)

CPC C09D 175/16 (2013.01) [C08G 18/10 (2013.01); C08G 18/2805 (2013.01); C08G 18/3876 (2013.01); C08G 18/52 (2013.01); C08G 18/753 (2013.01); C08G 18/7621 (2013.01); C08G 18/7671 (2013.01); C08G 18/792 (2013.01); C09D 175/14 (2013.01); C09J 175/14 (2013.01)]

35 Claims

1. A composition comprising:

(a) from 5 wt % to 25 wt % of a polythiol, wherein the polythiol comprises:

a thiol-terminated urethane-containing prepolymer;

a thiol-terminated urea-containing prepolymer; or

a combination thereof; and

(b) from 35 wt % to 75 wt % of a polyalkenyl, wherein the polyalkenyl comprises:

a polyalkenyl-terminated urethane-containing prepolymer;

a polyalkenyl-terminated urea-containing prepolymer; or

a combination thereof and

wherein wt % is based on the total weight of the composition.