Method of mixing elastomeric polymers for improved physical prop

Details Method of mixing elastomeric polymers for improved physical prop Method of mixing elastomeric polymers for improved physical prop

1982-08-30

1983-12-13

Bleutge, John C.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

523307, 524552, 524571, 524580, 260756, 260762, 260763, 260767, C08K 304, C08K 336, C08L 700, C08L 1100

Patent

active

044205856

ABSTRACT:
A method of mixing crosslinkable elastomeric polymers and reinforcing fillers has been developed that yields significant improvements in physical properties compared to like polymers mixed by conventional methods. The method entails working a filler-polymer mixture at a temperature between the glass transition temperature and the liquid-liquid temperature of the uncrosslinked polymer to enhance filler integration. The mixture is then heated to a temperature greater than the flow temperature of the uncrosslinked polymer and worked so that air bubbles dispersed in the mixture are eliminated. The heating and cooling steps are repeated until the filler particles are thoroughly integrated and substantially all air bubbles are eliminated.

REFERENCES:
patent: 4285897 (1981-08-01), Zakaria et al.
patent: 4342670 (1982-08-01), Ahagon et al.

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