Poly(acrylic acid), powder [MW ~ 4,000,000]
Poly(acrylic acid), 63% soln. in water [MW ~2,000]
Poly(acrylic acid), 50% soln. in water [MW ~ 5,000]
Poly(glycolic acid) [i.v. 1.0-2.0]
Poly(4-vinylphenol)