Low inherent viscosity-high glass transition temperature enhanci

Details Low inherent viscosity-high glass transition temperature enhanci Low inherent viscosity-high glass transition temperature enhanci

1987-08-14

1990-05-22

Ziegler, Jacob

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

Synthetic resins

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

428515, 525 73, 525203, 525244, 525272, 525279, 525285, 525289, 525317, C08F 834, C08F 1406

Patent

active

049278860

ABSTRACT:
Polyvinyl chloride resins are treated with a low inherent viscosity-high glass transition temperature enhancing agent to impart improved processing properties thereto, especially melt flow, which are desirable in various melt type fabrication processes such as custom injection molding. The high glass transition temperature-inherent viscosity enhancing agent is made by polymerizing one or more high glass transition temperature agent forming monomers in the presence of a chain transfer agent. The agent has a high glass transition temperature as well as a low inherent viscosity. The high glass transition temperature-inherent viscosity enhancing agent is produced as an overpolymer in a mass polymerization reaction.

REFERENCES:
patent: 3644577 (1972-02-01), Lee et al.
patent: 4448580 (1984-05-01), Abe et al.
patent: 4814387 (1989-03-01), Donat

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