Curable composition for sound barrier film

US10501612B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Pingfan Wu · Niskayuna, US
• Lianzhou Chen · Woodbury, US
• Fredrick W. Vance · Westfield, US
• Edward E. Cole · Woodbury, US
• Charles W. Hedley · Danville, US
• Gregory Simon · Zionsville, US
• Michael C. Martin · Houston, US

Key dates

• Filing date: May 3, 2016
• Grant date: Dec 10, 2019
• Expiry date: May 6, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2311/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A curable composition is provided comprising a curable rubber comprising: a) 80.0-99.9 wt % of a chloroprene resin; b) 0.06-13 wt % of trimethyl thiourea; and c) 0.06-13 wt % of a benzothiazolesulfenamide, such as N-cyclohexyl-2-benzothiazoles-ulfenamide. The present disclosure additionally provides cured compositions comprising a rubber comprising a crosslinked chloroprene resin and a fire retardant particle system comprising: d) 5-95 wt % particulate magnesium hydroxide (Mg(OH)2); and e) 5-95 wt % particulate aluminum trihydrate (Al(OH)3). In some embodiments the particulate aluminum trihydrate (Al(OH)3) has a mean particle size of greater than 30 microns and less than 400 microns, and more typically a mean particle size of greater than 82 microns. The present disclosure additionally provides sound barrier films comprising the cured compositions according to the present disclosure, in particular fire resistant sound barrier films.