Abstract:
The present invention relates to polyurethanes, polyurethane(urea) sulfur-containing polyurethanes, sulfur-containing polyurethane(urea) and methods for their preparation. Polyurethanes of the present invention can be prepared by combining polyisocyanate; trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole; and diol having molecular weight of less than or equal to 200 grams/mole. Polyurethane(urea) of the present invention can be prepared by combining polyisocyanate; trifunctional or higher-functional polyol diol and diamine. Sulfur-containing polyurethanes of the present invention can be prepared by combining polyisocyanate and/or polyisothiocyanate; trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole, and/or trifunctional or higher-functional polythiol having molecular weight of less than or equal to 600 grams/mole; and diol having molecular weight of less than or equal to 200 grams/mole and/or dithiol having molecular weight of less than or equal to 600 grams/mole. Sulfur-containing polyurethane(urea) of the present invention can be prepared by combining (a) polyisocyanate and/or polyisothiocyanate; (b) trifunctional or higher-functional (c) polyol and/or trifunctional or higher-functional polythiol and diol and/or dithiol and/or dithiol oligomer and (d) diamine wherein at least one of (a), (b), (c) and (d) is sulfur-containing.
Abstract:
The present invention provides polyurethanes including a reaction product of components including: (a) about 1 equivalent of at least one polyisocyanate; (b) about 0.05 to about 0.9 equivalents of at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups; and (c) about 0.1 to about 0.95 equivalents of at least one diol having 2 to 18 carbon atoms, wherein the reaction product components are essentially free of polyester polyol and polyether polyol and the reaction components are maintained at a temperature of at least about 100°C for at least about 10 minutes, compositions, coatings and articles made therefrom and methods of making the same.
Abstract:
A method for forming a laminated window having one or more interlayers that can exhibit a variable level of adhesion is disclosed. The method includes: a) assembling a cast between two plies that make up the laminated window; b) filling the cast with a reaction mixture for forming a polymer material; c) adding at least one first silane comprising an isocyanate functional silane and at least one second silane comprising an epoxy silane to the reaction mixture; and d) curing the reaction mixture.
Abstract:
The present invention provides poly(ureaurethane)s including a reaction product of components including: (a) at least one isocyanate functional ureaurethane prepolymer including the reaction product of: (1) at least one isocyanate functional urethane prepolymer including the reaction product of: (i) a first amount of at least one polyisocyanate; and (ii) a first amount of at least one branched polyol; and (2) water, to form an isocyanate functional ureaurethane prepolymer; and (b) a second amount of at least one polyisocyanate and a second amount of at least one branched polyol; compositions, coatings and articles made therefrom and methods of making the same.
Abstract:
An electrochromic aircraft window assembly includes: a) an outboard pane assembly; and b) a fog preventing electrochromic pane assembly spaced from the outboard pane assembly and defining a chamber therebetween, the fog preventing electrochromic pane assembly having: i) a first substrate having a first surface including a first conductive coating and a second surface including a second conductive coating; ii) a second substrate spaced from the first substrate, the second substrate having a first surface including a third conductive coating, the second surface of the first substrate and the first surface of the second substrate facing each other in spaced-apart relation to define a chamber therebetween; iii) an electrochromic medium contained in the chamber and in contact with the second and the third conductive coatings, the electrochromic medium having a luminous transmittance that varies upon application of an electrical potential through the electrochromic medium; iv) facilities for applying electrical current to the first conductive coating to heat the first conductive coating, thereby preventing fogging of the window assembly; and v) facilities for applying electrical current to the second and third conductive coatings to establish the electrical potential through the electrochromic medium and vary the variable luminous transmittance of the electrochromic medium.
Abstract:
An electrochromic window includes a first transparent, e.g., plastic, substrate having a first primer over at least a portion thereof and a first electrically conductive coating over at least a portion of the first primer. A second transparent plastic substrate has a second primer over at least a portion thereof and a second electrically conductive coating over at least a portion of the second primer. The first primer has a coefficient of expansion less than the coefficient of expansion of the first plastic substrate, and the second primer has a coefficient of expansion less than the coefficient of expansion of the second plastic substrate. An electrochromic medium is located between the first and second electrically conductive coatings. At least one of the first and second electrically conductive coatings has a metal layer located between the first and second metal oxide layers.
Abstract:
An electrochromic window assembly includes an electrochromic medium (40) contained in a chamber. A plurality of first spaced facilities contacting the first conductive coating and capable of delivering electrical current to the first conductive coating (29); and a plurality of second spaced facilities contacting the second conductive coating (39) and capable of delivering electrical current to the second conductive coating to establish the electrical potential through the electrochromic medium. The plurality of first spaced facilities and the plurality of second spaced facilities can be bus bars (60, 80) arranged about the perimeter of the window assembly. In addition, the window assembly can include a controller capable of controlling delivery of electrical current to selected ones of the plurality of first spaced facilities and selected ones of the plurality of second spaced facilities, such that the luminous transmittance through a first portion of the electrochromic medium is different from the luminous transmittance through a second portion of the electrochromic medium.
Abstract:
An electrochromic aircraft window assembly includes: a) an outboard pane assembly; and b) a fog preventing electrochromic pane assembly spaced from the outboard pane assembly and defining a chamber therebetween, the fog preventing electrochromic pane assembly having: i) a first substrate having a first surface including a first conductive coating and a second surface including a second conductive coating; ii) a second substrate spaced from the first substrate, the second substrate having a first surface including a third conductive coating, the second surface of the first substrate and the first surface of the second substrate facing each other in spaced-apart relation to define a chamber therebetween; iii) an electrochromic medium contained in the chamber and in contact with the second and the third conductive coatings, the electrochromic medium having a luminous transmittance that varies upon application of an electrical potential through the electrochromic medium; iv) facilities for applying electrical current to the first conductive coating to heat the first conductive coating, thereby preventing fogging of the window assembly; and v) facilities for applying electrical current to the second and third conductive coatings to establish the electrical potential through the electrochromic medium and vary the variable luminous transmittance of the electrochromic medium.
Abstract:
The present invention provides polyurethanes including a reaction product of components including: (a) an isocyanate functional urethane prepolymer including a reaction product of components including: (i) about 1 equivalent of at least one polyisocyanate; and (ii) about 0.01 to about 0.5 equivalent of at least one polyol having at least 3 hydroxyl groups; and (b) about 0.1 to about 1.0 equivalent of at least one polyol having at least 3 hydroxyl groups; compositions, coatings and articles made therefrom and methods of making the same.
Abstract:
A primer composition includes the reaction product of (a) a polyglycidyl ether of a hydroxy-functional material; and (b) an amino polyalkoxysilane. The reaction product, when hydrolyzed, comprises at least 6 silanol groups, such as at least 8 silanol groups, such as at least 10 silanol groups, such as at least 12 silanol groups.