Process for the production of stable polymers

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United States of America Patent

PATENT NO 8110704
APP PUB NO 20080108776A1
SERIAL NO

11591779

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Stable NCO prepolymers are produced from polyisocyanates having a melting point greater than 70° C., preferably, naphthalene diisocyanate, having advantageous physical properties. An important feature of the process of the present invention is the rapid cooling of the prepolymer. The process of the present invention may be carried out on a continuous or batch basis. The prepolymers of the present invention are particularly suitable for the production of cast polyurethane elastomers.

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Patent Owner(s)

  • BAYER MATERIALSCIENCE LLC;COVESTRO DEUTSCHLAND AG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barnes, James Michael Breitscheid-Hochscheid, DE 4 12
Bauer, Erika Juchen, DE 23 78
Di, Mews Horst Leverkusen, DE 1 1
Gracik, Charles S McMechan, US 10 36
Lutz, Heinrich Reichshof, DE 17 84
Nefzger, Hartmut Pulheim, DE 110 341
Penninger, Stefan Pulheim, DE 13 46
Schultz, Thomas Leverkusen, DE 20 258

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