Process for producing polycondensable macromonomer

Details Process for producing polycondensable macromonomer Process for producing polycondensable macromonomer

1998-08-28

2000-02-08

Acquah, Samuel A.

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

Synthetic resins

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

528271, 528373, 528390, 528392, 525535, 525539, 524706, 524710, 524713, 524714, 524722, 524742, C08F 2000

Patent

active

060229306

ABSTRACT:
This invention relates to the process for the preparation of macromonomers with more than one polycondensable functional groups with equal reactvity, which comprises reacting a carboxyl or hydroxyl terminated prepolymers, with an organic compound containing two or more isocynnate reactive functional groups, in the presence of a dehydrating agent and a non-reactive solvent at ambient temperatures, separating the product from the reaction mixture by conventional means.

REFERENCES:
patent: 4818804 (1989-04-01), Kuriyama et al.
patent: 5066759 (1991-11-01), Hille et al.
patent: 5185421 (1993-02-01), Cohen et al.
patent: 5254632 (1993-10-01), Kerscher et al.

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