Process for polymerization of tetrahydrofuran using acidic zeoli

Details Process for polymerization of tetrahydrofuran using acidic zeoli Process for polymerization of tetrahydrofuran using acidic zeoli

1993-10-19

1995-11-14

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

C08G 6366

Patent

active

054667780

ABSTRACT:
Disclosed is an improved process for polymerization of tetrahydrofuran to prepare poly(tetrahydrofuran) products with a MW range of 200 to 5000 and a dispersity of <2, which comprises premixing a carboxylic anhydride, such as, for example acetic anhydride and a dealuminated Y-zeolite and subsequently adding tetrahydrofuran at a temperature below 100.degree. C., wherein the order of addition of reactants is critical and the yield is improved by premixing the acetic anhydride and zeolite and then adding tetrahydrofuran.

REFERENCES:
patent: 5262562 (1993-11-01), Hollingsworth et al.

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