MICROFIBRILLATED CELLULOSE AS A CROSSLINKING AGENT

The present invention relates to a composition for use as an adhesive， paint， coating， resin， (surface) size， composite， gel or hydrogel， said composition comprising microfibrillated cellulose ("MFC"). In addition to microfibrillated cellulose， these compositions comprise at least one solvent， said solvent preferably comprising or consisting of water， and at least one compound that is (a) capable of polymerizing， or has already partly or fully， polymerized， and that (b) has at least two groups available for hydrogen bonding， preferably OH groups， that are capable of crosslinking with at least one functional group of the microfibrillated cellulose. In these compositions， the microfibrillated cellulose primarily functions as a crosslinking agent (while it is by no means excluded that the microfibrillated cellulose additionally has other functionalities， such as acting as viscosity modifier and/or thixotropic additive)， integrating the compound that (a) is capable of polymerizing or that has already partly or fully， polymerized， and that (b) has at least two groups available for hydrogen bonding， into a gel-like three-dimensional network. The present invention relates to a composition for use as an adhesive， paint， coating， resin， (surface) size， composite， gel or hydrogel， said composition comprising microfibrillated cellulose ("MFC"). In addition to microfibrillated cellulose， these compositions comprise at least one solvent， said solvent preferably comprising or consisting of water， and at least one compound that is (a) capable of polymerizing， or has already partly or fully， polymerized， and that (b) has at least two groups available for hydrogen bonding， preferably OH groups， that are capable of crosslinking with at least one functional group of the microfibrillated cellulose. In these compositions， the microfibrillated cellulose primarily functions as a crosslinking agent (while it is by no means excluded that the microfibrillated cellulose additionally has other functionalities， such as acting as viscosity modifier and/or thixotropic additive)， integrating the compound that (a) is capable of polymerizing or that has already partly or fully， polymerized， and that (b) has at least two groups available for hydrogen bonding， into a gel-like three-dimensional network.

本发明涉及一种可用作胶粘剂、涂料、涂层、树脂、（表面）施胶剂、复合材料、凝胶或水凝胶的组合物，所述组合物包含微纤化纤维素（microfibrillated cellulose, MFC）。除微纤化纤维素外，该类组合物还包含至少一种溶剂，所述溶剂优选包含水或以水为唯一组分；同时还包含至少一种满足以下条件的化合物：(a) 可发生聚合反应，或已发生部分或完全聚合；(b) 拥有至少两个可形成氢键的基团（优选羟基（OH）基团），且该基团可与微纤化纤维素的至少一个官能团发生交联反应。在该类组合物中，微纤化纤维素主要发挥交联剂的作用（同时并不排除微纤化纤维素亦可具备其他功能，例如用作粘度调节剂和/或触变添加剂），将满足(a)可聚合或已发生部分/完全聚合、(b)拥有至少两个可形成氢键的基团的化合物整合至类凝胶状三维网络结构中。
本发明涉及一种可用作胶粘剂、涂料、涂层、树脂、（表面）施胶剂、复合材料、凝胶或水凝胶的组合物，所述组合物包含微纤化纤维素（microfibrillated cellulose, MFC）。除微纤化纤维素外，该类组合物还包含至少一种溶剂，所述溶剂优选包含水或以水为唯一组分；同时还包含至少一种满足以下条件的化合物：(a) 可发生聚合反应，或已发生部分或完全聚合；(b) 拥有至少两个可形成氢键的基团（优选羟基（OH）基团），且该基团可与微纤化纤维素的至少一个官能团发生交联反应。在该类组合物中，微纤化纤维素主要发挥交联剂的作用（同时并不排除微纤化纤维素亦可具备其他功能，例如用作粘度调节剂和/或触变添加剂），将满足(a)可聚合或已发生部分/完全聚合、(b)拥有至少两个可形成氢键的基团的化合物整合至类凝胶状三维网络结构中。