摘要:
Silicone-polyether block copolymers are disclosed, having the average formula: R4R12Si(OR52Si)m{[R2O(CqH2qO)pR2R12Si(OR52Si)k]nR2O(CqH2qO)pR2R12Si)m}hOSiR12R4 wherein R1 is C1-C10 hydrocarbyl; R2 is C1-C10 hydrocarbylene; R3 is R1 or H; R4 is —R2—NR32 or —R2—NR3—R2—NR32; R5 is R1 or R4; h is 1 to 100; k is 2 to 500; m is 2 to 500; n is 0 to 30; p is 2 to 120; and q is 2 to 4. The silicone-polyether block copolymers comprise two terminal amine functionalities and may comprise varying degrees of pendent amine functionality. In a method for synthesizing linear silicone-polyether block copolymers of the above formula, a reaction mixture is formed by combining a polyether, an organosilicon component, an endblocking agent, and a catalyst. Thereupon, the reaction mixture is heated to produce a silicone-polyether block copolymer having at least one pendent amine functionality and a number-average molecular weight from 2000 to 500,000. Also disclosed are silicone-polyether block copolymers prepared according to the above method.
摘要翻译:公开了具有以下平均化学式的硅氧烷 - 聚醚嵌段共聚物:R 4 R 12 Si(OR 52 Si)m {[R 2 O(Cq H 2 q O)p R 2 Si(OR 52 Si)k] n R 2 O(C q H 2 q O)p R 2 R 12 Si)m} hOSiR 12 R 4其中R 1是C 1 -C 10烃基; R2是C1-C10亚烃基; R3是R1或H; R4是-R2-NR32或-R2-NR3-R2-NR32; R5是R1或R4; h为1〜100; k为2〜500; m为2〜500; n为0〜30; p为2〜120; 并且q为2至4.硅氧烷 - 聚醚嵌段共聚物包含两个末端胺官能团并且可包含不同程度的侧挂胺官能度。 在合成上述式的直链硅氧烷 - 聚醚嵌段共聚物的方法中,通过将聚醚,有机硅组分,封端剂和催化剂组合形成反应混合物。 因此,将反应混合物加热以产生具有至少一个侧挂胺官能团和数均分子量为2000至500,000的硅氧烷 - 聚醚嵌段共聚物。 还公开了根据上述方法制备的硅氧烷 - 聚醚嵌段共聚物。
摘要:
Silicone-polyether block copolymers are disclosed, having the average formula: R4R12Si(OR52Si)m{[R2O(CqH2qO)pR2R12Si(OR52Si)k]nR2O(CqH2qO)pR2R12Si)m}hOSiR12R4 wherein R1 is C1-C10 hydrocarbyl; R2 is C1-C10 hydrocarbylene; R3 is R1 or H; R4 is —R2—NR32 or —R2—NR3—R2—NR32; R5 is R1 or R4; h is 1 to 100; k is 2 to 500; m is 2 to 500; n is 0 to 30; p is 2 to 120; and q is 2 to 4. The silicone-polyether block copolymers comprise two terminal amine functionalities and may comprise varying degrees of pendent amine functionality. In a method for synthesizing linear silicone-polyether block copolymers of the above formula, a reaction mixture is formed by combining a polyether, an organosilicon component, an endblocking agent, and a catalyst. Thereupon, the reaction mixture is heated to produce a silicone-polyether block copolymer having at least one pendent amine functionality and a number-average molecular weight from 2000 to 500,000. Also disclosed are silicone-polyether block copolymers prepared according to the above method.
摘要翻译:公开了具有以下平均化学式的硅氧烷 - 聚醚嵌段共聚物:R 4 R 12 Si(OR 52 Si)m {[R 2 O(Cq H 2 q O)p R 2 Si(OR 52 Si)k] n R 2 O(C q H 2 q O)p R 2 R 12 Si)m} hOSiR 12 R 4其中R 1是C 1 -C 10烃基; R2是C1-C10亚烃基; R3是R1或H; R4是-R2-NR32或-R2-NR3-R2-NR32; R5是R1或R4; h为1〜100; k为2〜500; m为2〜500; n为0〜30; p为2〜120; 并且q为2至4.硅氧烷 - 聚醚嵌段共聚物包含两个末端胺官能团并且可以包含不同程度的侧挂胺官能度。 在合成上述式的直链硅氧烷 - 聚醚嵌段共聚物的方法中,通过将聚醚,有机硅组分,封端剂和催化剂组合形成反应混合物。 因此,将反应混合物加热以产生具有至少一个侧挂胺官能团和数均分子量为2000至500,000的硅氧烷 - 聚醚嵌段共聚物。 还公开了根据上述方法制备的硅氧烷 - 聚醚嵌段共聚物。
摘要:
Methods for rendering a cellulosic substrate hydrophobic include providing a plurality of halosilane compounds comprising at least a first halosilane compound and a second halosilane compound different from the first halosilane compound, wherein the plurality of halosilane compounds comprises a total halosilane concentration comprising 20 mole percent or less of monohalosilanes, 70 mole percent or less of monohalosilanes and dihalosilanes and at least 30 percent of trihalosilanes and tetrahalosilanes, and, treating the cellulosic substrate with the plurality of halosilane compounds, wherein the plurality of halosilane compounds are applied as one or more liquids.
摘要:
A method for rendering a substrate hydrophobic includes treating the substrate with an acyloxysilane. The treatment includes impregnating the substrate with an acyloxysilane and thereafter curing (hydrolyzing and condensing the acyloxysilane) to form a silicone resin. The method is particularly useful for rendering paper hydrophobic.
摘要:
A method for rendering a substrate hydrophobic while maintaining its biodegradability includes treating the substrate with a halosilane such that the halosilane forms a silicone resin in the interstitial spaces of the substrate. The method parameters can be controlled such that the resulting hydrophobic cellulosic substrate is compostable.
摘要:
A method for rendering a substrate hydrophobic while maintaining its biodegradability includes treating the substrate with a reactive silane such that the reactive silane forms a resin in the interstitial spaces of the substrate. The method parameters are controlled such that the resulting hydrophobic cellulosic substrate is compostable.