Certainteed Corporation

Certainteed Ceilings Corporation

Keith C Hong

Husnu M Kalkanoglu

Ming Liang Shiao

Gregory F Jacobs

Rajesh Ranjan

Anne B Hardy

James A Salvatore

Andrew G Johnson

Ming-Liang Shiao

Joong Youn Kim

Phillip Evans

Walter T Stephens

Van Nhan Nguyen

Isabelle Etchart Randlett

Yanjia Zuo

Chris L Heikkinen

John T Madajewski

Chris W Niemi

Jeremiah L Shaffer

Zhengzhi Zhou

Robert Miller

Kamila Plevacova

Ronald S Wisniewski

Harold F Zimmerman

Earnest E McDaniel

Pierre-Olivier Petit

The present disclosure relates generally to acoustic panels, for example, suitable for use in a ceiling to control sound. The present disclosure relates more particularly to an acoustic ceiling panel including an acoustic substrate formed of a porous material having an air flow resistivity of at least 300 kPa*s/m. The acoustic substrate includes an upper face and a lower face with a pattern of perforations formed therein, where the pattern of perforations covers at least 6% of the area of the lower face. The acoustic ceiling panel also includes a backing layer disposed over the upper face of the acoustic substrate and a veil disposed over the lower face.

Acoustic ceiling panel, method of manufacture and acoustic ceiling system

A method of forming an asphalt mixture includes mixing a polyol with a bio-source material to form a bio-asphalt. The method can further include mixing the bio-asphalt with a bitumen source different from the bio-asphalt to form an asphalt mixture. The bio-source material can include an oil, such as a vegetable oil, an animal fat, or any combination thereof. The bitumen source can include a petroleum-based asphalt. The method can further include adding a modifier, such as a fatty acid, a polycarboxylic acid, a polyacrylic acid, a polyacrylate comprising a copolymer, or any combination thereof. Moreover, a roofing grade asphalt mixture includes a bio-asphalt. The bio-asphalt includes an alkyd, wherein the alkyd is a reaction product of a polyol and a bio-source material. The roofing grade asphalt mixture further includes a bitumen source material and particles.

Roofing product including bio-based asphalt mixture and methods of making the roofing product and the roofing-grade asphalt mixture

A method of forming an asphalt mixture can include mixing a bio-source material and a bitumen source to form a bitumen mixture. The bitumen mixture can be mixed with a catalyst to form the asphalt mixture. Particles can be added to the asphalt mixture to form a roofing-grade asphalt mixture. In an embodiment, the bitumen source material can have a softening point of at least approximately 93&#xb0; C. and a penetration distance no greater than approximately 25 dmm. In another embodiment, the roofing-grade asphalt mixture can have a softening point of at least approximately 104&#xb0; C., a penetration distance no greater than approximately 12 dmm, a viscosity of at least approximately 3000 cps at a temperature of 204&#xb0; C., or any combination thereof. The asphalt mixture can be applied to a base material to form a roofing product. The asphalt mixture can be applied as a pavement product.

Oxidized mixture of bio-based material and asphalt, a bio-based asphaltic material, and methods of making the same

Roofing granules having a color coating layer are covered with a clear, transparent or translucent outer coating composition including a functional material, such nanoparticles of anatase titanium dioxide.

Post-functionalized roofing granules and process for preparing same

Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by a colored infrared pigment, a light-interference platelet pigment, or a metal oxide.

Colored roofing granules with increased solar heat reflectance, solar heat-reflective shingles and process for producing same

Solar reflective roofing granules include a binder and inert mineral particles, with solar reflective particles dispersed in the binder. An agglomeration process preferentially disposes the solar reflective particles at a desired depth within or beneath the surface of the granules.

Roofing granules with high solar reflectance, roofing products with high solar reflectance, and processes for preparing same

The retention of roofing granules on bituminous roofing products is enhanced by providing an adherent material in the interstices between the exterior surface of the roofing granules and the exposed upper surface of the base sheet.

Method of producing roofing shingles with enhanced granule adhesion

Algae-resistant roofing granules are formed by extruding a mixture of mineral particles and a binder to form porous granule bodies, and algaecide is distributed in the pores. Release of the algaecide is controlled by the structure of the granules.

Algae resistant roofing granules with controlled algaecide leaching rates, algae resistant shingles, and process for producing same

Photocatalytic roofing granules include a binder and inert mineral particles, with photocatalytic particles dispersed in the binder.

Photocatalytic roofing granules, photocatalytic roofing products, and process for preparing same

Solar-reflective roofing granules having improved solar heat-resistance are formed by coating colored mineral particles with a coating composition including titanium dioxide nanoparticles.

Growing community of inventors

Lititz, PA, United States of America

Keith C Hong