Main > POLYMERS > Oligomer > Ester Oligomer > Butylene Terephthalate Oligomer > Cyclic Butylene Terephthalate Olig. > Patent. > Literature > Poly(Ester). Foam. > Poly(Butylene Terephthalate). Foam. > Making Method. > a) Heating to T = 175 - 205C. > MacroCyclic Oligo(Ester). > to Produce Free Flowing Precursors > (Viscosity = 40-100 Centipoise)

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b) Contacting with Blowing Agent

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