초록

A sound deadener sheet softenable by heat to wilt into conformity and adhesive engagement with a contoured metal surface but resistant to running and flow at higher temperatures comprising a mineral-filled bitumen containing a small amount of vulcanized vegetable oil.

대표청구항 ▼

A sound deadener sheet softenable by heat to wilt into conformity and adhesive engagement with a contoured metal surface but resistant to running and flow at higher temperatures, said sheet being formed of a mixture of mineral filler and a binder, said binder comprising about 45% to about 70% by wei

A sound deadener sheet softenable by heat to wilt into conformity and adhesive engagement with a contoured metal surface but resistant to running and flow at higher temperatures, said sheet being formed of a mixture of mineral filler and a binder, said binder comprising about 45% to about 70% by weight of asphaltic bitumen from the class consisting of natural asphalt and residue from the distillation of petroleum, from about 5% to about 20% by weight of an elastomeric modifier compatible with said asphaltic bitumen and from about 1.5% to about 3.5% of the solid, non-thermoplastic product of reaction of vegetable unsaturated oil with sulfur, sulfur monochloride or sulfur dichloride coacting with the asphaltic bitumen to prevent running and flow of said sheet at higher temperatures, said weight percentages being based on the weight of said binder.