US 12,215,246 B2
Composition comprising a light-weight filler
Ralf Sauer, St. Leon-Rot (DE); Michael Klotz, Duesseldorf (DE); Thomas Zahn, Bammental (DE); and Peter Born, Sandhausen (DE)
Assigned to Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed by Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed on Nov. 25, 2019, as Appl. No. 16/693,637.
Application 16/693,637 is a continuation of application No. PCT/EP2018/067224, filed on Jun. 27, 2018.
Claims priority of application No. 17178456 (EP), filed on Jun. 28, 2017.
Prior Publication US 2020/0087532 A1, Mar. 19, 2020
Int. Cl. C09D 147/00 (2006.01); C09D 5/02 (2006.01); C09D 7/40 (2018.01); C09D 7/61 (2018.01)
CPC C09D 147/00 (2013.01) [C09D 5/02 (2013.01); C09D 7/61 (2018.01); C09D 7/69 (2018.01); C09D 7/70 (2018.01); C08L 2203/14 (2013.01); C08L 2205/025 (2013.01)] 20 Claims
 
1. A composition comprising:
a) at least one reactive binder;
b) at least one curing agent and/or accelerator;
c) at least one thermally activatable blowing agent, the at least one thermally activatable blowing agent releasing gas after being heated to a temperature ranging from 120° C. to 220° C. for 10 to 150 minutes and being selected from solid polycarboxylic acids, salts of said solid polycarboxylic acids, and mixtures thereof; and
d) at least one lightweight filler, wherein the at least one lightweight filler includes at least one expanded particle of at least one glass-rich volcanic rock, the glass-rich volcanic rock forms a closed outer shell, wherein the expanded particles have a bulk density of 100 kg/m3 to 500 kg/m3; and
the composition is free of hollow glass spheres and free of polymer balloons, is foamable, has a density of 0.9 g/cm3 to 2 g/cm3, and is pumpable and stable at a temperature below 70° C. and at a pump pressure of up to 360 bar.