Water repellant curable aqueous compositions

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 33/02 (2006.01) C03C 25/24 (2006.01) C08F 8/14 (2006.01) C08F 8/30 (2006.01) C08J 3/26 (2006.01) C08J 5/24 (2006.01) C08K 5/20 (2006.01)

Patent

CA 2551004

According to the present invention, water repellant curable compositions comprise: (i) one or more polyacid comprising at least two carboxylic acid groups, anhydride groups, or salts thereof; (ii) one or more polyol comprising at least two hydroxyl groups; (iii) one or more reactive waterproofing agent chosen from a C5 to C30 alk(en)yl 2-hydroxyethyl (alk(en))amide, C5 to C30 alk(en)yl bis(2- hydroxyethyl) amide, C11 to C30 alk(en)yl 2-hydroxyethyl (alk(en))amine, C11 to C30 alk(en)yl bis(2- hydroxy-ethyl) amine, C11 to C30 alk(en)yl tris(2-hydroxyethyl) amine, C5 to C30 alk(en)yl monoglyceride, C5 to C30 alk(en)yl monocarboxylate of a trihydric polyol, and mixtures thereof; and, (iv), optionally, one or more phosphorous-containing accelerator, wherein the ratio of the number of equivalents of said carboxylic acid groups, anhydride groups, or salts thereof to the total number of equivalents of said hydroxyl groups is from 1/0.01 to 1/3. The compositions provide concentrates dilutable with water to make thermosetting aqueous binder compositions. Further, the present invention provides methods of treating or contacting substrates chosen from a non-woven, woven and a composite, such as glass fiber substrates, with the thermosetting aqueous binder compositions, and drying and curing, as well as water resistant products produced thereby.

La présente invention concerne des compositions hydrofuges supportant la cuisson qui comportent : i) au moins un polyacide comptant au moins deux groupements acide carboxylique, anhydride, ou des sels de ceux-ci; ii) au moins un polyol comptant au moins deux groupements hydroxyle; iii) au moins un agent hydrofugeant réactif choisi parmi les suivants : alk(én)yl- 2-hydroxyéthyl(alk(èn))amide en C5 à C30, alk(én)yl-bis(2-hydroxyéthyl)amide en C5 à C30, alk(én)yl-2-hydroxyéthyl(alk(èn))amine en C11 à C30, alk(én)yl-bis(2-hydroxyéthyl)amine en C11 à C30, alk(én)yl-tris(2-hydroxyéthyl)amine en C11 à C30, alk(én)ylmonoglycéride en C5 à C30, alk(én)ylmonocarboxylate en C5 à C30 d'un polyol trihydrique, et mélanges de ces substances; (iv) de manière facultative, au moins un accélérateur à base de phosphore, dans lequel le ratio du nombre d'équivalents de groupements acide carboxylique, anhydride ou de leurs sels au nombre d'équivalents de groupements hydroxyle est de 1/0,01 à 1/3. Les compositions donnent des concentrés hydrosolubles pour la fabrication de compositions aqueuses liantes thermodurcissables. En outre, la présente invention fournit des méthodes pour le traitement ou la mise en contact de substrats de matières non tissées, de matières tissées ou de composites, par exemple substrats de fibre de verre, avec les compositions aqueuses liantes thermodurcissables, ainsi que pour le séchage et la cuisson. On propose également des produits hydrofuges obtenus par ces procédés.

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