Compositions containing -ketocarbonyl-functional organopolysiloxanes, aminoalkyl-functional organopolysiloxanes, and optionally an organometallic compound provide textiles with high and lasting water repellency.

A modified polysiloxane has formula (I)

##STR00001##

In formula (I) m is an integer between 0 and 10000; n is an integer between 0 and 10000; m and n cannot be equal to 0 simultaneously; R.sub.1-R.sub.7 are the same or different; and at least one of R.sub.1-R.sub.7 includes a group having a reversible chemical bond system based on a hydrogen bond, a coordinate bond, or a covalent bond. The polysioxane is used as a main chain to introduce a reversible chemical bond having temperature sensitivity by using a chemical method, so as to obtain a polymer material which is highly sensitive to temperature. The temperature-sensitive properties of materials provide functional materials for specific applications, such as medical external fixation materials, orthopedic materials, and packaging materials, can be obtained by using particular processing and preparation methods.

A modified polysiloxane has formula (I)

##STR00001##

In formula (I) m is an integer between 0 and 10000; n is an integer between 0 and 10000; m and n cannot be equal to 0 simultaneously; R.sub.1-R.sub.7 are the same or different; and at least one of R.sub.1-R.sub.7 includes a group having a reversible chemical bond system based on a hydrogen bond, a coordinate bond, or a covalent bond. The polysioxane is used as a main chain to introduce a reversible chemical bond having temperature sensitivity by using a chemical method, so as to obtain a polymer material which is highly sensitive to temperature. The temperature-sensitive properties of materials provide functional materials for specific applications, such as medical external fixation materials, orthopedic materials, and packaging materials, can be obtained by using particular processing and preparation methods.

An optical functional film containing a siliceous material, wherein a refractive index n.sub.A of one surface A of said optical functional film to light is larger than a refractive index n.sub.b of the other side surface B to light, and the refractive index to light gradually decreases from said surface A to said surface B and wherein when a refractive index of a medium X coming into contact with said surface A is n.sub.x and a refractive index of a medium Y coming into contact with said surface B is n.sub.y, the relation n.sub.y<n.sub.b<n.sub.a<n.sub.x is satisfied and wherein the film is manufactured by the steps of a first layer forming step and a second layer forming step; and a heating step of heating to cure said first layer and said second layer, wherein the contacting parts of said first layer and said second layer are compatibilized.

An optical functional film containing a siliceous material, wherein a refractive index n.sub.A of one surface A of said optical functional film to light is larger than a refractive index n.sub.b of the other side surface B to light, and the refractive index to light gradually decreases from said surface A to said surface B and wherein when a refractive index of a medium X coming into contact with said surface A is n.sub.x and a refractive index of a medium Y coming into contact with said surface B is n.sub.y, the relation n.sub.y<n.sub.b<n.sub.a<n.sub.x is satisfied and wherein the film is manufactured by the steps of a first layer forming step and a second layer forming step; and a heating step of heating to cure said first layer and said second layer, wherein the contacting parts of said first layer and said second layer are compatibilized.

A moisture barrier film, a moisture barrier device including the same and a method for preparing the moisture barrier device is provided. The moisture barrier film includes a hydrophobic modifying layer adapted to be formed on a substrate. The hydrophobic modifying layer is formed by solidification of a colloidal solution which includes a product obtained by subjecting a first trialkoxysilane having a hydrophobic group to a hydrolysis and condensation reaction with at least one of a second trialkoxysilane having a reactive group or a tetraalkoxysilane to form a polysilsesquioxane mixture, and subjecting the polysilsesquioxane mixture to modification with a metal source.

A moisture barrier film, a moisture barrier device including the same and a method for preparing the moisture barrier device is provided. The moisture barrier film includes a hydrophobic modifying layer adapted to be formed on a substrate. The hydrophobic modifying layer is formed by solidification of a colloidal solution which includes a product obtained by subjecting a first trialkoxysilane having a hydrophobic group to a hydrolysis and condensation reaction with at least one of a second trialkoxysilane having a reactive group or a tetraalkoxysilane to form a polysilsesquioxane mixture, and subjecting the polysilsesquioxane mixture to modification with a metal source.

A moisture barrier film, a moisture barrier device including the same and a method for preparing the moisture barrier device is provided. The moisture barrier film includes a hydrophobic modifying layer adapted to be formed on a substrate. The hydrophobic modifying layer is formed by solidification of a colloidal solution which includes a product obtained by subjecting a first trialkoxysilane having a hydrophobic group to a hydrolysis and condensation reaction with at least one of a second trialkoxysilane having a reactive group or a tetraalkoxysilane to form a polysilsesquioxane mixture, and subjecting the polysilsesquioxane mixture to modification with a metal source.

A method of making a lithium alkylsiliconate composition comprising adding an alkylalkoxysilane to a first mixture comprising lithium hydroxide and water to form a second mixture comprising a lithium alkylsiliconate and an alcohol, wherein i) the mole ratio of lithium hydroxide to alkylalkoxysilane is from 0.9 to less than 1.1 and the water is from 89 to 93 mol %, or ii) the mole ratio of lithium hydroxide to alkylalkoxysilane is from 1.1 to 1.4 and the water is from greater than 93 to 99 mole %.

A method of making a lithium alkylsiliconate composition comprising adding an alkylalkoxysilane to a first mixture comprising lithium hydroxide and water to form a second mixture comprising a lithium alkylsiliconate and an alcohol, wherein i) the mole ratio of lithium hydroxide to alkylalkoxysilane is from 0.9 to less than 1.1 and the water is from 89 to 93 mol %, or ii) the mole ratio of lithium hydroxide to alkylalkoxysilane is from 1.1 to 1.4 and the water is from greater than 93 to 99 mole %.