Blending bitumen into polyisobutylene-ethylene/vinyl acetate mixture
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United States of America Patent
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Nov 29, 1994
Issued Date -
N/A
app pub date -
Feb 17, 1994
filing date -
Jun 8, 1988
priority date (Note) -
Expired
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Abstract
A bitumenous binder useful in road surfacing is prepared via the blending of from 1-35% by weight of bitumen with a mixture of an ethylene/vinyl acetate copolymer and polyisobutylene having a number average molecular weight of greater than 400 to less than 1,000 wherein the ratio of polyisobutylene:ethylene/vinyl acetate is between 90:10 and 50:50.
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