Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-01-31
1993-12-21
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...
525250, 525271, 525314, C08F29704, C08L 5302
Patent
active
052722074
ABSTRACT:
A process is discontinuously preparing continuously tapered SBR-type copolymers optionally having a continuous change in microstructure along the polymer. The process produces tapered block copolymers with multiple glass transition temperatures of very small energy absorption, i.e. no definable glass transition temperature.
REFERENCES:
patent: 3937760 (1976-02-01), Cole et al.
patent: 4704434 (1987-11-01), Kitchen et al.
Hall James E.
Roggeman David M.
Bridgestone Corporation
Troy, Sr. Frank J.
Ziegler Jacob
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