Impact resistant polypivalolactone compsn - contg polymers with defin transition temp

摘要

Polypivololacetone compsn. with better tensile strength is prepd by mixing 100 pts. wt. polypivalolactine with 1-25 pts. wt. polymeric cpd. with a mol. wt. above 5000, a glass transition temp. below 0 degree C and solubility parameter between 7.5 and 14.