Other

Gaf Corporation

Thomas C Friel, Jr

Anthony J O'lenick, Jr

Anthony J O'Lenick, Jr

The present invention involves new anti-foam compositions which control foaming in aqueous systems and by nature of their inverse cloud point characterisitics are insoluble and particulate above their inverse cloud point, and soluble below it. This property makes them particulate non-depositing defoamers. As the defoamed aqueous system cools down these novel products become soluble, preventing insoluble material (pitch) from depositing on process equipment and matter being processed. The anitfoam composition is an alkoxylated bis-amide of the following formula: ##STR1## where R.sup.1 is ##STR2## R.sup.2 is --(CH.sub.2).sub.a --; R.sup.3 is alkyl C.sub.12 to C.sub.20 ; ##STR3## x,y,z are each independently integers from 0 to 20; a is an integer from 1 to 5;

Alkoxylated bis-amide defoaming compounds

The present invention involves new anti-foam compositions which control foaming in aqueous systems and by nature of their unique cloud point characteristics are insoluble and particulate above their inverse cloud point, and soluble below it. This property makes them particulate non-depositing defoamers. As the defoamed aqueous system cools down these novel products become soluble, preventing insoluble material (pitch) from depositing on process equipment and matter being processed.

Particulate defoaming compositions

The present invention involves new anti-foam compositions which control foaming in aqueous systems and by nature of their unique cloud point characteristics are insoluble and particulate above their inverse cloud point, and soluble below it. This property makes them non-depositing defoamers. As the defoamed aqueous system cools down these novel products become soluble, preventing insoluble material (pitch) from depositing on process equipment and matter being processed.

Growing community of inventors

Savannah, GA, United States of America

Thomas C Friel, Jr