Isocyanate extended polymers and the formation of block copolymers
Abstract
Abstract POLYMERS OF ANIONICALLY POLYMERIZED MONOMERS AND MADE WITH AN ORGANO ALKALI METAL INITIATOR AND THEN REACTED WITH EITHER POLYIOSCYANATES OR POLYISOTHIOCYANATES WHICH REMOVE THE ALKALI ATOMS AND FORM A NOVEL POLYMERIC COMPOSITION CONTAINING ISOCYANATE OR ISOCYANATE TERMINATED POLYMERS. THESE POLYMERS MAY THEN BE REACTED WITH COMPOUNDS CONTAINING AN ISOCYANATE OR AN ISOTHIOCYANATE REACTIVE GROUP. THE ISOCYANATE OR ISOTHIOCYANATE TERMINATED POLYMERS UNDER ANHYDROUS POLYMERIZATION CONDITIONS MAY ALSO BE BLOCKED WITH NYLON FORMING MONOMERS TO FORM VARIOUS NYLON BLOCK COPOLYMERS. THE ISOCYANATE OR ISOTHIOCYANATE TERMINATED POLYMERS OF THE POLYMERIC COMPOSITION WHEN REACTED WITH UREA FORMING MONOMERS PRODUCE UREA BLOCK COPOLYMERS. REACTION OF THE ISOCYANATE OR ISOTHIOCYANATE TERMINATED POLYMERS WITH URETHANE FORMING MONOMERS WILL PRODUCE URETHANE BLOCK COPOLYMERS. THE ISOCYANATE AND ISOTHIOCYANATE TERMINATED POLYMERS OF THE POLYMERIC COMPOSITION WHEN REACTED WITH IMIDE FORMING MONOMERS PRODUCE IMIDE BLOCK COPOLYMERS.
Inventors
- 👤 W Hergenrother
- 👤 R Ambrose
Bibliographic Details
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