Preparation of adhesive (CO) polymers from isocyanate chain exte

Details Preparation of adhesive (CO) polymers from isocyanate chain exte Preparation of adhesive (CO) polymers from isocyanate chain exte

1997-11-06

2000-09-19

Lipman, Bernard

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

Synthetic resins

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

C08F 820

Patent

active

061213802

ABSTRACT:
Disclosed is a method for preparing adhesive polymers which commences with the formation of a poly-telechelic polymer of narrow molecular weight distribution (Mw/Mn) by polymerizing one or more radically-polymerizable monomers in the presence of a transition metal, a ligand, and an initiator, under atom or group transfer radical polymerization conditions. In this polymerization step, OH groups are contained on one or more of said initiator, an initiating monomer, a polymerizable monomer, a terminating monomer, or combinations thereof. The poly-telechelic polymer, then, is chain extended with a polyisocyanate to form the adhesive polymer.

REFERENCES:
patent: 4446246 (1984-05-01), McGinniss et al.
patent: 4882530 (1989-11-01), Bronstert et al.

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