TW201923025A - Photochromic article and methods of making same - Google Patents

Abstract

A method of forming a photochromic article includes dissolving a polyurethane host material into 1-methoxy-2-propanol to form a first solution; stirring the first solution; adding a photochromic dye to a mixture of 1-methoxy-2-propanol and butyl acetate to form a second solution; adding the second solution into the stirred first solution to form a third solution; adding triphenylphosphine into the third solution having the polyurethane host material and the photochromic dye to form a fourth solution; stirring the fourth solution until the fourth solution is a dark color with no undissolved particles; adjusting the stirred fourth solution to a viscosity by the mixture of 1-methoxy-2-propanol and butyl acetate to form a fifth solution; and spraying coat the fifth solution onto a substrate to form the photochromic article.

Description

Photochromic article and manufacturing method thereof

The present invention relates to a photochromic article, a manufacturing method thereof, and an application thereof.

The foregoing description of the prior art provided herein is for the purpose of generally presenting the context of the invention. The topics discussed in the prior art chapters should not be considered as conventional technologies simply because they were mentioned in the prior art chapters. Similarly, issues mentioned in or related to the subject matter in the prior art section should not be considered as previously recognized in the prior art. The subject matter in the prior art chapters of the present invention merely represents different methods, which may themselves be inventions.

Photochromic lenses are usually made by applying a photochromic layer to a plastic spectacle lens or by incorporating a photochromic compound into a lens substrate. When a photochromic lens is exposed to ultraviolet (UV) light, it becomes dark, causing the lens to function as sunglasses, and then discoloring when ultraviolet (UV) light is removed.

A common problem associated with traditional photochromic lenses is a long fade time, in which the lens does not fade immediately when the wearer enters the room where the light is dimmed from outdoors in the sun, making the vision poor.

Therefore, there is a field in the art for solving the above-mentioned deficiencies and inappropriate unsolved needs so far.

One of the objectives of the present invention is to provide a photochromic object, for example, by solving the above-mentioned deficiencies and inappropriate photochromic lenses by increasing the discoloration speed of the photochromic dye, reducing the user's Time allows users to see more clearly and therefore more safely indoors.

In one aspect, the invention relates to a method of forming a photochromic article. The photochromic object may be a photochromic lens or a photochromic glass such as a building glass or a window.

In one embodiment, the photochromic article forming method includes dissolving a first amount of a polyurethane host material in a second amount of 1-methoxy-2-propanol (MOP) to Form a first solution; stir the first solution with a stainless steel propeller; add a third amount of photochromic to a mixture of 1-methoxy-2-propanol (MOP) and butyl acetate Dye to form a second solution; add the second solution to the stirred first solution to form a third solution; add a fourth amount of triphenylphosphine (TPP) to the polyurethane with a polyurethane host material and a photochromic dye In the third solution, a fourth solution is formed; the fourth solution is stirred until the fourth solution is dark and there are no undissolved particles; via 1-methoxy-2-propanol (MOP) The mixed solution with butyl acetate adjusts the viscosity of the stirred fourth solution to 60 centipoise (cP) to form a fifth solution; sprays the fifth solution onto the substrate and dries it, for example, in a clean room oven To remove the solvent to form a photochromic object.

In one embodiment, the method further includes treating the photochromic article with a hardened film resin to obtain scratch resistance.

In one embodiment, the method further includes treating the photochromic object with an anti-reflective layer.

Photochromic dyes include photochromic materials that reversibly change color when exposed to an ultraviolet (UV) light source and return to colorless when the UV light source is removed. Therefore, the photochromic dye of the present invention may be any photochromic dye.

In one embodiment, the substrate is a flexible or rigid substrate and is made of glass or plastic. In one embodiment, the thickness of the substrate is constant or varies at different locations.

In one embodiment, the polyurethane host material comprises PE287.

In one embodiment, the weight ratio of triphenylphosphine (TPP) to the photochromic dye is about 5 to 100 percent (5-100%), and the weight ratio is about 12 to 100 percent. A range of 60 percent (12-60%) is preferred.

In one embodiment, the photochromic dye comprises a volcanic gray photochromic dye.

In one embodiment, the weight ratio of triphenylphosphine (TPP) to pozzolan photochromic dye is about 5 to 15 percent (5-15%), and the weight ratio is about 12 percent (12%) is better.

In one embodiment, the photochromic dye comprises P1499.

The weight ratio of triphenylphosphine (TPP) to P1499 is about 30% to 60% (30-60%), and a weight ratio of about 48% (48%) is preferred.

In one aspect, the present invention relates to a method for forming a photochromic object, including forming a solution containing a photochromic dye and triphenylphosphine (TPP), wherein the photochromic dye comprises a photochromic material, and The color-changing material reversibly changes color when exposed to an ultraviolet (UV) light source and returns to colorless when the ultraviolet light source is removed; the solution is sprayed onto a substrate, and the solution is dried to remove the solvent to form a photochromic object.

In one embodiment, the method further includes treating the photochromic article with a hardened film resin to obtain scratch resistance.

In one embodiment, the method further includes treating the photochromic object with an anti-reflective layer.

In one embodiment, the solution further comprises a polyurethane host material, 1-methoxy-2-propanol (MOP), and / or butyl acetate. In one embodiment, the polyurethane host material comprises PE287.

In one embodiment, the weight ratio of triphenylphosphine (TPP) non-photochromic dye is about 5 to 100 percent (5-100%), and the weight ratio is about 12 percent A range of up to 60 percent (12-60%) is preferred.

Photochromic dyes include pozzolanic photochromic dyes or P1499.

In one embodiment, the weight ratio of triphenylphosphine (TPP) to pozzolan photochromic dye is about 5 to 15 percent (5-15%), and the weight ratio is about 12 percent Is better.

In one embodiment, the weight ratio of triphenylphosphine (TPP) to P1499 is about 30 to 60 percent (30-60%), and the weight ratio is about 48 (48%) Is better

In one embodiment, the solution therein has a viscosity of about 60 centipoise (cP).

In one aspect, the present invention relates to a photochromic article formed by the above method.

In one embodiment, the photochromic object has a substrate; the photochromic layer is formed on the substrate surface by a photochromic dye and triphenylphosphine (TPP), wherein the photochromic dye comprises a photochromic material, The aforementioned photochromic material reversibly changes color when exposed to an ultraviolet (UV) light source, and changes back to colorless when the ultraviolet (UV) light source is removed. The photochromic object is a photochromic glass or a photochromic lens.

In one embodiment, the photochromic article further includes a hardened film resin layer for scratch resistance.

In one embodiment, the photochromic article further comprises an anti-reflective layer.

In one embodiment, the photochromic layer further comprises one or more of a hindered amine light stabilizer, an antioxidant material, other stabilizers and additives.

In one embodiment, the photochromic layer further comprises a polyurethane host material.

In one embodiment, the polyurethane host material comprises PE287.

In one embodiment, the photochromic dye comprises a pozzolan photochromic dye.

In one embodiment, the weight ratio of triphenylphosphine (TPP) to pozzolan photochromic dye is about 5 to 15 percent (5-15%), and the weight ratio is about 12 percent Is better.

In one embodiment, the photochromic dye comprises P1499.

In one embodiment, the weight ratio of triphenylphosphine (TPP) to P1499 is about 30 to 60 percent (30-60%), and the weight ratio is about 48 (48%) Is better.

In one embodiment, the substrate is a flexible or rigid substrate and is made of glass or plastic.

In one embodiment, the substrate has a constant thickness or a thickness that varies at different locations.

By describing the preferred embodiments in conjunction with the following drawings, these and other aspects of the invention, even if changes or modifications are made, will become apparent without departing from the scope of the novel concept and spirit of the invention.

The invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The same reference numerals always refer to the same elements.

The terms used in this specification generally have their ordinary meaning in the art in the context of the present invention and in the specific context in which each term is used. Certain terms used to describe the present invention are discussed below or elsewhere in the specification to provide practitioners with additional guidance regarding the description in the present invention. For ease of description, certain terms may be emphasized, such as using italics and / or quotes. The use of particularly emphasized labels has no effect on the scope and meaning of the terms. Whether emphasized or not, the scope and meaning of the terms are the same in the same context. It should be understood that the same thing can be stated in more than one way. Thus, alternative sentences and synonyms can be used in any one or more of the terms discussed herein, and it does not have any special meaning whether the terms are elaborated or discussed herein. Synonyms for certain terms are provided. The description of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification, including examples of any terms discussed herein, is merely illustrative and in no way limits the scope and meaning of the invention or any exemplary term. As such, the invention is not limited to the various embodiments given in the description.

It should be understood that when an element is referred to as being "on" another element, it can be directly on the other element, or there may be conditions for the existence of other elements in between. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

It should be understood that, although the terms first, second, and third may be used herein to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be referred to by these terms Give restrictions. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below can be termed a second element, component, region, layer or section without departing from the teachings of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that when the term "comprising" or "including" or "having" is used in this specification, it specifically specifies the existence of said features, regions, integers, steps, operations, elements and / or components, but does not Exclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and / or groups.

Furthermore, relative terms such as "below" or "bottom", "above" or "top", and "left" and "right" can be used herein to describe the relationship of one element to another, as shown in the figure Show. It should be understood that in addition to the orientation shown in the figures, relative terms are intended to include different orientation relationships of the device. For example, if the device in one of the figures is turned over, components described as being on the "lower" side of other components will be oriented on the "upper" side of the other components. Thus, the exemplary term "down" may include directions of "down" and "up", depending on the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as "below" or "below" other elements would then be oriented "above" the other elements. The illustrative terms "below" or "below" may thus include an orientation relationship above and below.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted to have meanings consistent with their meanings in the relevant field and the context of the present invention, and will not be interpreted as ideal or overly formal meanings, except in This is clearly defined.

As used herein, "about", "approximately" or "approximately" generally means within a given value or within 20 percent (20%) of a given range, and "better" is within a given value or given Within 10% (10%) of a given range and "more accurate" is within 5 (5%) of a given value or range. When the values given here are approximate, it means that if not explicitly stated, it can be inferred that they have the meanings of "about," "about," or "approximately."

The following description is merely illustrative in nature and is not intended to limit the present invention, its application, or uses. The broad teachings of the invention can be disclosed in a variety of forms. Therefore, although the invention includes specific examples, the true scope of the invention should not be limited by this, as other modifications will become apparent when studying the scope of the drawings, the description, and the patent application. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. It should be understood that one or more steps in the method may be performed in a different order (or simultaneously) without altering the principles of the invention.

In some aspects, the present invention relates to photochromic objects, such as photochromic lenses having a fast discoloration speed, and methods of making photochromic objects.

Traditionally, photochromic lenses quickly darken when exposed to ultraviolet light, but slowly disappear back to their transparent and colorless state. This may cause the wearer to see through dark lenses when entering the room. By increasing the fading speed of the photochromic dye, the amount of time that a user has to walk indoors with dark glasses can be reduced, allowing the user to see more clearly and therefore more safely indoors.

Typical antioxidants do not prevent the lens from turning yellow during lens processing. If the lens is coated and not immediately treated with a buffer layer and hardened film, the lens will begin to yellow. In one embodiment, triphenylphosphine (TPP) is added to the host material, which not only reduces yellowing of the host material, but also significantly increases the fading speed and transparency of the photochromic dye. The transmittance of the state.

Referring now to FIG. 1, a flowchart of forming a photochromic object according to an embodiment of the present invention is shown. In an exemplary embodiment, the method includes the following steps.

In step 110, a first amount of the polyurethane host material is dissolved in a second amount of 1-methoxy-2-propanol (MOP) to form a first solution.

In step 120, the first solution is stirred, such as using a stainless steel propeller or other means of stirring.

In step 130, a third amount of the photochromic dye is added to a mixed solution of 1-methoxy-2-propanol (MOP) and butyl acetate to form a second solution.

At step 140, a second solution is added to the stirred first solution to form a third solution.

At step 150, a fourth amount of triphenylphosphine (TPP) is added to a third solution having a polyurethane host material and a photochromic dye to form a fourth solution.

In step 160, the fourth solution is stirred until the fourth solution is dark and there are no undissolved particles;

In step 170, adjust the stirred fourth solution to a concentration of 60 centipoise (cP) by using a mixed solution of 1-methoxy-2-propanol (MOP) and butyl acetate. Viscosity to form a fifth solution.

In step 180, the fifth solution is sprayed onto the substrate, and the fifth solution is dried in, for example, a clean room oven to remove the solvent to form a photochromic article.

Furthermore, the method further includes treating the photochromic article with a cured film resin to obtain scratch resistance.

In addition, the method may include treating the photochromic object with an anti-reflection layer.

In one embodiment, the polyurethane host material comprises PE287 (Huntsman Advanced Materials, The Woodlands, Texas).

In one embodiment, the weight of triphenylphosphine (TPP) is about 5 to 100% (5-100%) of the weight of the photochromic dye, preferably about 100%. In the range of 12 to 60 percent (12-60%).

The photochromic dye contains a photochromic material. The photochromic material reversibly changes color when exposed to an ultraviolet (UV) light source and returns to colorless when removed from the ultraviolet light source.

In one embodiment, the photochromic dye comprises a pozzolan photochromic dye. The weight of triphenylphosphine (TPP) is about 5 to 15 percent (5-15%), preferably about 12 (12%), by weight of the pozzolan photochromic dye. .

In one embodiment, the photochromic dye comprises P1499 (ChromTech PH-1499) photochromic dye. The weight of triphenylphosphine (TPP) is about 30 to 60 (30-60%), preferably about 48 (48%), of P1499.

In another aspect of the present invention, a method for forming a photochromic article includes forming a solution including a photochromic dye and triphenylphosphine (TPP), applying the solution to a substrate, and drying the solution to remove the solvent to Form a photochromic object. The photochromic dye contains a photochromic material that reversibly changes color when exposed to an ultraviolet (UV) light source and returns to colorless when removed from an ultraviolet (UV) light source.

In one embodiment, the method further comprises treating with a hardened film resin to obtain scratch resistance.

In one embodiment, the method further includes treating the photochromic object with an anti-reflective layer.

In one embodiment, the solution further includes a polyurethane host material, 1-methoxy-2-propanol (MOP), and / or butyl acetate. In one embodiment, the polyurethane host material comprises PE287.

In one embodiment, the weight of triphenylphosphine (TPP) is about 5 to 100% (5-100%) of the weight of the photochromic dye, preferably about 100%. In the range of 12 to 60 percent (12-60%).

In one embodiment, the solution has a viscosity of about 60 centipoise (cP).

In one aspect, the present invention relates to a photochromic article formed by the above method.

As shown in the embodiment shown in FIG. 2A, the photochromic object has a substrate 210; and a photochromic layer 220 formed of a photochromic dye and triphenylphosphine (TPP) is disposed on a surface of the substrate 210. In some embodiments, the photochromic layer 220 may further include a polyurethane host material. The polyurethane host material includes PE287 in one embodiment. In some embodiments, the photochromic layer 220 may also have one or more of a hindered amine light stabilizer, an antioxidant material, and other light stabilizers and additives.

Photochromic objects can be photochromic glass, such as building glass and windows, and photochromic lenses.

Photochromic dyes include photochromic materials, where the photochromic material reversibly changes color when exposed to an ultraviolet (ultraviolet) light source and returns to colorless when the ultraviolet light source is removed.

In some embodiments, the photochromic dye comprises a pozzolan photochromic dye. In an embodiment, the weight of triphenylphosphine (TPP) is about 5 to 15 percent (5-15%), preferably about 100 percent, of the weight of the pozzolan photochromic dye. Of 12 (12%).

In some embodiments, the weight of triphenylphosphine (TPP) is about 30% to 60% (30-60%), preferably about 48% (48%) of the weight of P1499. %).

In some embodiments, the substrate 210 is a flexible or rigid substrate and is made of glass or plastic. In some embodiments, the substrate 210 has a constant thickness or a thickness that varies at different locations. For example, for a photochromic lens, the substrate may be a substrate having a curvature and having a constant thickness or a thickness that varies at different positions. For building windows, the substrate can be a flat plate with a constant or variable thickness due to different positions

As shown in FIG. 2B, the photochromic article may further include an anti-reflection layer 230 formed on the photochromic layer 220 and / or a hardened film resin layer 240 for scratch resistance.

According to the embodiment of the present invention, adding certain antioxidants to the photochromic object, such as oxygen scavenger triphenylphosphine (TPP), can significantly improve the discoloration speed of the photochromic object.

These and other aspects of the invention are described further below. Without intending to limit the scope of the present invention, exemplary embodiments, methods, and related results according to embodiments of the present invention are shown below.

Example 1

In this exemplary embodiment, about 18 grams of PE287 (Huntsman Advanced Materials, The Woodlands, Texas) is dissolved in about 110 grams of 1-methoxy-2-propanol (MOP) To form a first solution. The first solution was stirred with a stainless steel propeller. About 4.4 grams of volcanic gray photochromic dye (Vivimed Labs, Monmouth Junction, New Jersey) was added to about 50 grams of 1-methoxy-2-propanol (MOP) and butyl acetate. In the mixture to form a second solution. A second solution is added to the first solution to form a third solution. About 0.5 grams of triphenylphosphine (TPP) was then added to a third solution having a polyurethane host material-PE287 and a photochromic dye-volcanic gray dye to form a fourth solution. The fourth solution was stirred until the fourth solution was dark and free of undissolved particles. The stirred fourth solution was then adjusted to a viscosity of about 60 centipoise (cP) by using a mixture of 1-methoxy-2-propanol (MOP) and butyl acetate. To form a fifth solution. The fifth solution was spin-coated on the lens substrate, dried in a clean room oven to remove the solvent, and then cooled. The photochromic lens is then further treated with a cured film resin to obtain scratch resistance, and may be further treated with an anti-reflection layer.

In this embodiment, the weight of triphenylphosphine (TPP) is about 12% (12%) of the weight of the pozzolan photochromic dye. The characteristic relationship between the light transmittance and time of the photochromic lens is shown in FIG. 3, and the photochromic lens whose light transmittance is controlled only by volcanic ash photochromic dye (without triphenylphosphine) is also shown in the figure as Compare. Obviously, by adding triphenylphosphine (TPP), the discoloration speed of photochromic lenses increased significantly.

Example 2

In this exemplary embodiment, about 18 grams of PE287 is dissolved in about 110 grams of 1-methoxy-2-propanol (MOP) to form a first solution. The stainless steel propeller was used to stir the first solution. About 3.2 grams of P1499 (ChromTech PH-1499) photochromic dye was added to a mixture of about 50 grams of 1-methoxy-2-propanol (MOP) and butyl acetate to form第二 溶液。 The second solution. A second solution is added to the first solution to form a third solution. About 1.5 grams of TPP was then added to a third solution with a polyurethane host material-PE287 and a photochromic dye-P1499 to form a fourth solution. The fourth solution was stirred until the fourth solution was dark and free of undissolved particles. The stirred fourth solution was then adjusted to a viscosity of about 60 centipoise (cP) by using a mixture of 1-methoxy-2-propanol (MOP) and butyl acetate to A fifth solution was formed. The fifth solution was spin-coated on the lens substrate, dried in a clean room oven to remove the solvent, and then cooled. The photochromic lens is then further treated with a cured film resin to obtain scratch resistance, and may be further treated with an anti-reflection layer.

In this embodiment, the weight of triphenylphosphine (TPP) is about 48 percent (48%) of the weight of P1499. The characteristic relationship between the light transmittance and time of this photochromic lens is shown in Fig. 4, where the light transmittance is controlled only by the photochromic dye-P1499 (without triphenylphosphine). The photochromic lens is also shown in the figure as Compare. Obviously, by adding triphenylphosphine (TPP), the discoloration speed of the photochromic lens is significantly increased.

The foregoing description of the exemplary embodiments of the present invention has been presented for purposes of illustration and description only, and is not intended to be exhaustive or limited to the invention in the precise form disclosed. In light of the above teachings, many modifications and variations are possible.

These embodiments were chosen and described to explain the principles of the invention and its practical application to enable others skilled in the art to utilize the invention and various embodiments and various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which this invention pertains without departing from the spirit and scope of the invention. Therefore, the scope of the present invention is defined in the scope of patent application rather than the foregoing description and description in the exemplary embodiments.

210‧‧‧ substrate

220‧‧‧Photochromic layer

230‧‧‧Anti-reflective layer

240‧‧‧hardened film resin layer

The drawings illustrate one or more embodiments of the invention, and together with the embodiments, serve to explain the principles of the invention. Wherever possible, the same reference numbers will be used to refer to the same or similar elements in the embodiments. FIG. 1 is a schematic flowchart of forming a photochromic object according to an embodiment of the present invention. FIG. 2A is a schematic diagram of a photochromic object according to an embodiment of the present invention. FIG. 2B is a schematic diagram of a photochromic object according to another embodiment of the present invention. FIG. 3 is a relationship diagram between the light transmittance and time of a photochromic lens according to an embodiment of the present invention. FIG. 4 is a graph showing a relationship between light transmittance and time of a photochromic lens according to another embodiment of the present invention.

Claims (22)

A method for forming a photochromic article, comprising: dissolving a first amount of a polyurethane host material in a second amount of 1-methoxy-2-propanol (MOP) To form a first solution; stir the first solution; add a third amount of photochromic dye to 1-methoxy-2-propanol (MOP) and butyl acetate A mixed solution to form a second solution; adding the second solution to the stirred first solution to form a third solution; adding a fourth amount of triphenylphosphine (TPP) to the The polyurethane host material and the third solution of the photochromic dye form a fourth solution; the fourth solution is stirred until the fourth solution is dark and there are no undissolved particles; via 1-methoxy-2 -The mixed solution of 1-methoxy-2-propanol (MOP) and butyl acetate adjusts the fourth solution after stirring to a viscosity to form a fifth solution; and sprays the fifth solution onto a substrate Then, the fifth solution is dried to remove the solvent to form the photochromic article. The method of claim 1, wherein the photochromic dye comprises a photochromic material, the photochromic material reversibly changes color upon exposure to an ultraviolet (UV) light source and is removed by the ultraviolet light source Changes back to colorless. A method for forming a photochromic object, comprising: forming a solution including a photochromic dye and triphenylphosphine (TPP), wherein the photochromic dye includes a photochromic material, and the photochromic material Reversibly changing color when exposed to an ultraviolet (UV) light source and returning to colorless when the ultraviolet light source is removed; and applying the solution to a substrate, drying the solution to remove the solvent to form the light Color-changing objects. The method according to claim 1 or 3, further comprising treating the photochromic article with a hardened film resin to obtain scratch resistance. The method according to claim 1 or 3, further comprising treating the photochromic object with an anti-reflection layer. The method according to claim 1 or 3, wherein the weight of triphenylphosphine (TPP) is 5 to 100 percent (5-100%) of the weight of the photochromic dye. The method according to claim 1 or 3, wherein the photochromic dye comprises a pozzolanic photochromic dye or P1499. The method of claim 7, wherein the weight of triphenylphosphine (TPP) is 5 to 15 percent (5-15%) of the weight of the pozzolan photochromic dye, or three The weight of triphenylphosphine (TPP) is 30 to 60% (30-60%) of the weight of the pozzolan photochromic dye. The method according to claim 3, wherein the solution further comprises a polyurethane host material, 1-methoxy-2-propanol (MOP), and / or butyl acetate. The method according to claim 1 or 9, wherein the polyurethane host material comprises PE287. The method of claim 1 or 9, wherein the solution has a viscosity of 60 centipoise (cP). A photochromic object is formed by the method of claim 1 or 3, wherein the photochromic object is a photochromic lens or a photochromic glass. A photochromic object includes: a substrate; and a photochromic layer is formed on a surface of the substrate from a photochromic dye and triphenylphosphine (TPP), wherein the photochromic dye includes a A photochromic material that reversibly changes color when exposed to an ultraviolet (UV) light source and returns to colorless when the ultraviolet light source is removed. The photochromic article according to claim 13, further comprising a hardened film resin layer for scratch resistance. The photochromic article according to claim 13, further comprising an anti-reflective layer. The photochromic article according to claim 13, further comprising one or two of a hindered amine light stabilizer. The photochromic article according to claim 13, wherein the photochromic layer further comprises a polyurethane host material. The photochromic article according to claim 17, wherein the polyurethane host material comprises PE287. The photochromic article according to claim 13, wherein the weight of triphenylphosphine (TPP) is 5 to 100% (5-100%) of the weight of the photochromic dye. The photochromic article according to claim 13, wherein the photochromic dye comprises a pozzolanic photochromic dye or P1499. The photochromic article according to claim 20, wherein the weight of triphenylphosphine (TPP) is 5 to 15% (5-15%) of the weight of the pozzolan photochromic dye, Or triphenylphosphine (TPP) weighs 30 to 60 percent (30-60%) of the weight of P1499. The photochromic article according to claim 13, wherein the substrate is a flexible substrate or a rigid substrate and is made of glass or plastic, wherein the substrate has a constant thickness or varies at different positions thereof thickness of.