DuPont™ SentryGlas® Qualifies for New Kawneer Hurricane-Protection System

DuPont Glass Laminating Solutions announces that DuPont™ SentryGlas® ionoplast and DuPont™ Butacite® PVB interlayers are qualified as options for use in Kawneer’s newly introduced 1630 SS IR (Impact-Resistant) Curtain Wall System for Miami-Dade Notice of Acceptance (NOA) and Florida Product Approvals.    Screw-spline fabrication with both wet and dry glazing options make the 1630 SS IR Curtain Wall System flexible as well as easy and fast to install.  The system offers an additional line of defense against high winds, heavy rains and hurricanes.“We collaborated closely with Kawneer to test several products in various calliper thicknesses for multiple applications,” said David M.

Rinehart, DuPont Glass Laminating Solutions North America protective glazing marketing manager. “Based on the results, we believe SentryGlas® and Butacite® in the Kawneer system can provide the most stringent and affordable hurricane mitigation protection options available in North America.”

Based on Kawneer’s testing and qualification, 60-mil thick SentryGlas® can be used for large missile impact resistance for winds up to 110 mph in Wind Zone 3, as defined by the American Society of Testing and Materials E1996 standard.  90-mil thick SentryGlas® is qualified for dry glazed systems intended for use in the High Velocity Hurricane Zone (HVHZ), primarily Miami-Dade and Broward Counties.  120-mil and 180-mil SentryGlas® thicknesses are qualified and tested to design pressures up to 130 pounds per square foot (psf) for essential and non-essential facilities in the HVHZ and elsewhere.

DuPont™ 60-mil thick Butacite® PVB also is qualified in Kawneer’s 1630 SS IR Curtain Wall System for small missile resistance as required by ASTM E1886 and ASTM E1996, the ASTM test method and specification that address performance of exterior windows, doors and curtain walls installed in geographic regions that are prone to hurricanes.

For decades, interlayers made of polyvinyl butyral (PVB) have been the industry standard when producing laminated safety glass. Architects are well aware of the possibilities and limitations of such glass when used extensively in façade engineering, for roofing and window panels.

In contrast, SentryGlas® enables an entirely new approach because the interlayer is over 100 times stiffer and five times stronger than PVB. As a consequence, there is an almost perfect transmission of load between two laminated sheets of glass, even at high temperatures, leading to the excellent flexural behavior of the glass when under load – also under direct sunlight in high summer. Accordingly, laminates with SentryGlas® show less than half the rate of deflection when compared to laminates with PVB, when under the same load, and thus almost the same behaviour as monolithic glass of the same thickness.

DuPont (NYSE: DD) has been bringing world-class science and engineering to the global marketplace in the form of innovative products, materials, and services since 1802.  The company believes that by collaborating with customers, governments, NGOs, and thought leaders we can help find solutions to such global challenges as providing enough healthy food for people everywhere, decreasing dependence on fossil fuels, and protecting life and the environment.  For additional information about DuPont and its commitment to inclusive innovation, please visit

Forward-Looking Statements:  This news release contains forward-looking statements based on management's current expectations, estimates and projections.  All statements that address expectations or projections about the future, including statements about the company's strategy for growth, product development, market position, expected expenditures and financial results are forward-looking statements.  Some of the forward-looking statements may be identified by words like "expects," "anticipates," "plans," "intends," "projects," "indicates," and similar expressions.  These statements are not guarantees of future performance and involve a number of risks, uncertainties and assumptions.  Many factors, including those discussed more fully elsewhere in this release and in documents filed with the Securities and Exchange Commission by DuPont, particularly its latest annual report on Form 10-K and quarterly report on Form 10-Q, as well as others, could cause results to differ materially from those stated.  These factors include, but are not limited to fluctuations in energy and raw material prices; failure to develop and market new products and optimally manage product life cycles; significant litigation and environmental matters; failure to appropriately manage process safety and product stewardship issues; changes in laws and regulations or political conditions; global economic and capital markets conditions, such as inflation, interest and currency exchange rates; business or supply disruptions; security threats, such as acts of sabotage, terrorism or war, weather events and natural disasters; inability to protect and enforce the company's intellectual property rights; and integration of acquired businesses and completion of divestitures of underperforming or non-strategic assets or businesses.  . The company undertakes no duty to update any forward-looking statements as a result of future developments or new information.

600450 DuPont™ SentryGlas® Qualifies for New Kawneer Hurricane-Protection System

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