We construct new Uq(a2n−1(2)) and Uq(e6(2)) invariant
R-matrices and comment on the general construction of R-matrices for
twisted algebras. We use the former to construct S-matrices for bn(1)
affine Toda solitons and their bound states, identifying the lowest breathers
with the bn(1) particles.Comment: Latex, 24 pages. Various misprints corrected. New section added
clarifying relationship between R-matrices and S-matrice