Anti-dust additive composition for construction material
An anti-dust additive composition for industrial mortars, dry coatings, cements and tile adhesives, includes at least a hydrocarbon fluid, a surfactant and 0.01% to 5% wt of water, preferably from 0.01% to 2% wt, more preferably from 0.01% to 1% wt and even more preferably from 0.05% to 0.5% wt of water. A process of preparation of construction material includes the step of adding the anti-dust additive composition to a material powdery binder. The use of the anti-dust additive composition for decreasing the dust emission during the fabrication of construction material with a material powdery binder and/or during the use of the construction material is also disclosed.
1. An anti-dust additive composition for industrial mortars, dry coatings, cements and/or tile adhesives, comprising
at least a hydrocarbon fluid consisting of the combination of a hydrotreated hydrocracked hydrocarbon fluid with a hydrotreated hydrodewaxed hydrocarbon fluid,
wherein the anti-dust additive composition comprises
from 95% to 99% wt of the hydrocarbon fluid based on the total weight of the anti-dust additive composition,
from 0.01% to 0.5% wt of water based on the total weight of the anti-dust additive composition, and
from 0.5% to 4.99% wt of a surfactant based on the total weight of the anti-dust additive composition, wherein the surfactant is a mixture of triblock copolymers derived from ethylene oxide and propylene oxide, and fatty alcohol, and
wherein the hydrocarbon fluid has:
a naphthenics content below 50% wt based on the total weight of the hydrocarbon fluid;
an isoparaffinic content above 50% wt based on the total weight of the hydrocarbon fluid;
a normal paraffinic content below 20% wt based on the total weight of the hydrocarbon fluid; and
less than 0.1% wt of aromatics measured by UV spectrometry based on the total weight of the hydrocarbon fluid.
2. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid is a dearomatised and/or desulfurized hydrocarbon fluid.
3. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid is originated from crude oil.
4. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid has a distillation range comprised between 230° C. and 410° C., according to ASTM D86.
5. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid has a kinematic viscosity at 40° C. comprised between 2 mm 2 /s and 22 mm 2 /s, according to ASTM D445.
6. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid has a paraffinic content above 60% wt based on the total weight of the hydrocarbon fluid.
7. A process of preparation of a construction material comprising:
adding an anti-dust additive composition for industrial mortars, dry coatings, cements and/or tile adhesives to a material powdery binder, the anti-dust additive composition comprising
at least a hydrocarbon fluid consisting of the combination of a hydrotreated hydrocracked hydrocarbon fluid with a hydrotreated hydrodewaxed hydrocarbon fluid,
from 0.5% to 4.99% wt of a surfactant based on a total weight of the anti-dust additive composition, wherein the surfactant is a mixture of triblock copolymers derived from ethylene oxide and propylene oxide, and fatty alcohol, and
from 0.01% to 0.5% wt of water based on the total weight of the anti-dust additive composition,
wherein the additive composition comprises 95% to 99% wt of the hydrocarbon fluid based on the total weight of the anti-dust additive composition, and
wherein the hydrocarbon fluid has:
a naphthenics content below 50% wt based on the total weight of the hydrocarbon fluid;
an isoparaffinic content above 50% wt based on the total weight of the hydrocarbon fluid;
a normal paraffinic content below 20% wt based on the total weight of the hydrocarbon fluid; and
less than 0.1% wt of aromatics measured by UV spectrometry based on the total weight of the hydrocarbon fluid.
8. The process according to claim 7 , wherein the anti-dust additive composition is added by vaporisation on the material powdery binder.
9. The process according to claim 7 , wherein the anti-dust additive composition is added by blending with the material powdery binder.
10. The process according to claim 7 , wherein the construction material comprises between 0.01% and 10% wt of the anti-dust additive composition.
11. The anti-dust additive composition according to claim 1 , wherein the anti-dust additive composition is configured to decrease dust emission from a material powdery binder during the fabrication of a construction material and/or from the construction material during use of the construction material.
12. The anti-dust additive composition according to claim 11 , wherein the material powdery binder is selected from the group consisting of industrial mortars, dry coatings, cements and tile adhesives.
13. The anti-dust additive composition according to claim 1 , wherein the anti-dust additive composition has a pour point according to ASTM D97 between −50° C. and 0° C.
14. The anti-dust additive composition according to claim 1 , wherein the anti-dust additive composition is free of volatile organic compounds (VOCs).