Approach to reduce cyclics formation in 3-CIPA based...

Details Approach to reduce cyclics formation in 3-CIPA based... Approach to reduce cyclics formation in 3-CIPA based...

2005-07-19

2005-07-19

Hightower, P. Hampton (Department: 1711)

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C528S125000, C528S126000, C528S128000, C528S171000, C528S172000, C528S173000, C528S174000, C528S176000, C528S179000, C528S183000, C528S185000, C528S188000, C528S220000, C528S229000, C528S350000, C528S352000, C528S353000, C525S420000, C525S422000, C525S432000, C525S436000, C546S256000, C546S304000

Reexamination Certificate

active

06919418

ABSTRACT:
Methods of reducing the amount of undesirable cyclic oligomer by-products in the production of polyetherimides are disclosed. The resulting polyetherimides have enhanced thermomechanical properties.

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patent: 0 892 003 (1999-01-01), None
PCT Search Report—Oct. 22, 2004.

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