We construct new
deformations of the universal enveloping algebras from the quantum Weyl
algebras for any R-matrix. Our new algebra (in the case of g=sl2) is a
noncommutative and noncocommutative bialgebra (i.e. quantum semigroup)
with its localization being a Hopf algebra (i.e. quantum group). The ring
structure and representation theory of our algebra are studied in the case of
sl2.