Patent ID: 11945900
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A  B  G | IPC A  B  C

Claim 6:
7. The orthodontic article of claim 6, wherein the at least one urethane (meth)acrylate is of Formula (V):

(A)p-Q-OC(O)NH—Rdi—NH—C(O)—[O—RdOH—OC(O)NH—Rdi—NH—C(O)]s—[O—RAD—OC(O)NH—Rdi—NH—C(O)]t—O-Q-(A)p  (V),

wherein A has the formula —XC(═O)C(R1)═CH2, wherein X is O, S, or NR4, R4 is H or alkyl of 1 to 4 carbon atoms, and R1 is a lower alkyl of 1 to 4 carbon atoms or H, p is 1 or 2, Q is a polyvalent organic linking group, Rdi is the residue of a diisocyanate, RdOH is the residue of a polycarbonate polyol, s and t are independently 1 or greater, and s+t averages from 2 to 15, wherein the s and t units may be connected to each other in any order, wherein RAD is the residue of a (meth)acrylated diol.