Gaf Building Materials Corporation

Gaf Corporation

Louis L. Grube

Steven S. Lalwani

Adem Chich

Steven C. Bettoli

Alfredo a. Bondoc

Steven S Lalwani

Alfredo A Bondoc

Louis L Grube

Steven C Bettoli

Charles J Horner, Jr

Philip J Halpin

William G Pursell, Sr

An adhesive composition for roofing such as shingles is disclosed which is composed of a hard asphaltic bitumen fraction having a penetration number at 77.degree. F. of from 0 to 30 dmm and a softening point of from about 150.degree. to 220.degree. F. and an elastomeric composition composed of a thermoplastic elastomer and a plasticizer wherein the overall adhesive composition has a penetration number of from 30 to 100 dmm at 130.degree. F. and a softening point of 140.degree. to 230.degree. F. The inventive composition is self-sealing and exhibits excellent squash resistance, low temperature properties and resistance to blowoff. The composition can be used with shingles as well as other types of roofing coverings.

Low temperature sealing adhesive composition

A glass fiber mat having improved strength and fiber wettability is provided by incorporation of a critical amount of between 1% and 6% by weight (solids) of a carboxylated styrene-butadiene latex having a pH between about 5 and about 8.5, a glass transition temperature (Tg) less than 25.degree. C. and a surface tension less than 50 dynes/cm, and 94% and 99% by weight (solids) of a urea-formaldehyde resin solution having a pH of from about 6.5 to about 8.5.

Binder for improved glass fiber mats

A process and apparatus is provided for making a rubber-like product from rubber scrap, such as recycled tire scrap. The process includes mixing the rubber scrap with from 1 percent to 15 percent, with respect to the weight of the rubber scrap, of added sulphur, and applying a pressure thereto of about 1000 to 3000 pounds per square inch for 1 to 10 minutes at a temperature of from about 250 degrees F. to about 450 degrees F. In addition, 1 to 8 percent, with respect to the weight of the rubber scrap, of antioxidants and antiozonants are added to the mixture of rubber scrap and sulphur. The sulphur is free sulphur. Derivative sulphur compounds, or like vulcanizing agents, can be added in place of the free sulphur of about 1 to 45 percent of the weight of the rubber scrap. The rubber scrap is buffing of recycled tire rubber, or powder made from recycled tire rubber. An apparatus for carrying out the process is also provided. The apparatus includes a heavy duty mixer for making the mixture of the rubber scrap and sulphur and antioxidants and antiozonants. The apparatus also includes a compression molding and heating apparatus for applying the pressure and temperature to the mixture. The process is particularly suitable for making roofing products.

Process for preparing a rubber scrap composition

A low temperature self-sealing roofing adhesive blend comprising

Roofing adhesive

Growing community of inventors

Upper Montclair, NJ, United States of America

Steven S Lalwani