Composition and process for the production of a porous layer...

Details Composition and process for the production of a porous layer... Composition and process for the production of a porous layer...

2005-03-01

2005-03-01

Woodward, Ana (Department: 1711)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S408000, C525S411000, C525S413000, C525S414000, C525S415000, C525S423000, C525S425000, C525S427000, C525S428000, C525S430000

Reexamination Certificate

active

06861479

ABSTRACT:
Production of a porous layer includes using a composition which includes a first polymer component and a second polymer component, the first polymer component being polyhydroxyamide and/or polybenzoxazole and stable at a temperature at which the second polymer component decomposes and volatilizes. If the composition is heated to the decomposition temperature of the second polymer component, the second component volatilizes and a porous layer that contains the first component remains.

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patent: 1 085 041 (2001-03-01), None
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patent: WO 0005297 (2000-02-01), None
patent: WO 0061834 (2000-10-01), None

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