C08F32/00

STABILIZED UV ACTIVE ORGANOPALLADIUM COMPOUNDS AS VINYL ADDITON CATALYSTS

Embodiments in accordance with the present invention encompass compositions comprising a long shelf stabilized organopalladium compound of formula (I) as described herein. The composition further contains a photoacid generator, a photosensitizer and one or more olefinic monomers as described herein. The shelf life of the compositions can further be extended by employing a stabilizer, such as for example, a hindered amine. The composition undergoes vinyl addition polymerization when it is exposed to a suitable actinic radiation to form a substantially transparent film or a three dimensional object. More specifically, the compositions of this invention are stable at room temperature for several days to several months and can also be stored at higher temperatures from about 40° C. to 60° C. for several days and undergo mass polymerization only when subjected to suitable actinic radiation. The monomers employed therein have a range of optical and mechanical properties, and thus these compositions can be tailored to form films and/or three dimensional objects having various opto-electronic properties. Accordingly, compositions of this invention are useful in various applications, including as coatings, encapsulants, fillers, leveling agents, sealants, adhesives, among others.

Selective Dual-Wavelength Olefin Metathesis Polymerization for Additive Manufacturing

The invention is directed to the selective dual wavelength olefin metathesis polymerization for additive manufacturing. Dual-wavelength stereolithographic printing uses ring-opening metathesis polymerization of the metathesis-active polymers. As an example, a resin formulation based on dicyclopentadiene was produced using a photolatent olefin metathesis catalyst, various photosensitizers and photobase generators to achieve efficient initiation by light at one wavelength (e.g., blue) and fast catalyst decomposition and polymerization deactivation by light at a second wavelength (e.g., ultraviolet). This process enables 2-dimensional stereolithographic printing, either using photomasks or with patterned, collimated light. Importantly, the same process was readily adapted for 3-dimensional continuous additive manufacturing, with printing rates of up to 36 mm h.sup.−1 for patterned light and up to 180 mm h.sup.−1 using un-patterned, high intensity light.

Modified resins and uses thereof

Modified thermoplastic hydrocarbon thermoplastic resins are provided, as well as methods of their manufacture and uses thereof in rubber compositions. The modified thermoplastic resins are modified by decreasing the relative quantity of the dimer, trimer, tetramer, and pentamer oligomers as compared to the corresponding unmodified thermoplastic resin polymers, resulting in a product that exhibits a greater shift in the glass transition temperature of the elastomer(s) used in tire formulations. This translates to better viscoelastic predictors of tire tread performance, such as wet grip and rolling resistance. The modified thermoplastic resins impart remarkable properties on various rubber compositions, such as tires, belts, hoses, brakes, and the like. Automobile tires incorporating the modified thermoplastic resins are shown to possess excellent results in balancing the properties of rolling resistance, tire wear, snow performance, and wet braking performance.

Modified resins and uses thereof

Modified thermoplastic hydrocarbon thermoplastic resins are provided, as well as methods of their manufacture and uses thereof in rubber compositions. The modified thermoplastic resins are modified by decreasing the relative quantity of the dimer, trimer, tetramer, and pentamer oligomers as compared to the corresponding unmodified thermoplastic resin polymers, resulting in a product that exhibits a greater shift in the glass transition temperature of the elastomer(s) used in tire formulations. This translates to better viscoelastic predictors of tire tread performance, such as wet grip and rolling resistance. The modified thermoplastic resins impart remarkable properties on various rubber compositions, such as tires, belts, hoses, brakes, and the like. Automobile tires incorporating the modified thermoplastic resins are shown to possess excellent results in balancing the properties of rolling resistance, tire wear, snow performance, and wet braking performance.

Modified resins and uses thereof

Modified thermoplastic hydrocarbon thermoplastic resins are provided, as well as methods of their manufacture and uses thereof in rubber compositions. The modified thermoplastic resins are modified by decreasing the relative quantity of the dimer, trimer, tetramer, and pentamer oligomers as compared to the corresponding unmodified thermoplastic resin polymers, resulting in a product that exhibits a greater shift in the glass transition temperature of the elastomer(s) used in tire formulations. This translates to better viscoelastic predictors of tire tread performance, such as wet grip and rolling resistance. The modified thermoplastic resins impart remarkable properties on various rubber compositions, such as tires, belts, hoses, brakes, and the like. Automobile tires incorporating the modified thermoplastic resins are shown to possess excellent results in balancing the properties of rolling resistance, tire wear, snow performance, and wet braking performance.

Modified resins and uses thereof

Modified thermoplastic hydrocarbon thermoplastic resins are provided, as well as methods of their manufacture and uses thereof in rubber compositions. The modified thermoplastic resins are modified by decreasing the relative quantity of the dimer, trimer, tetramer, and pentamer oligomers as compared to the corresponding unmodified thermoplastic resin polymers, resulting in a product that exhibits a greater shift in the glass transition temperature of the elastomer(s) used in tire formulations. This translates to better viscoelastic predictors of tire tread performance, such as wet grip and rolling resistance. The modified thermoplastic resins impart remarkable properties on various rubber compositions, such as tires, belts, hoses, brakes, and the like. Automobile tires incorporating the modified thermoplastic resins are shown to possess excellent results in balancing the properties of rolling resistance, tire wear, snow performance, and wet braking performance.

Stabilized UV active organopalladium compounds as vinyl addition catalysts
11667731 · 2023-06-06 · ·

Embodiments in accordance with the present invention encompass compositions comprising a long shelf stabilized organopalladium compound of formula (I) as described herein. The composition further contains a photoacid generator, a photosensitizer and one or more olefinic monomers as described herein. The shelf life of the compositions can further be extended by employing a stabilizer, such as for example, a hindered amine. The composition undergoes vinyl addition polymerization when it is exposed to a suitable actinic radiation to form a substantially transparent film or a three dimensional object. More specifically, the compositions of this invention are stable at room temperature for several days to several months and can also be stored at higher temperatures from about 40° C. to 60° C. for several days and undergo mass polymerization only when subjected to suitable actinic radiation. The monomers employed therein have a range of optical and mechanical properties, and thus these compositions can be tailored to form films and/or three dimensional objects having various opto-electronic properties. Accordingly, compositions of this invention are useful in various applications, including as coatings, encapsulants, fillers, leveling agents, sealants, adhesives, among others.

LIQUID CRYSTAL DISPLAY DEVICE

The present invention provides a liquid crystal display device that, with photo-alignment films, can maintain a favorable voltage holding ratio for a long period of time and prevent generation of image sticking and stains on the display screen. The liquid crystal display device includes: an active-matrix liquid crystal panel; and a backlight, the liquid crystal panel including a liquid crystal layer, paired substrates holding the liquid crystal layer in between, and alignment films disposed on the liquid crystal layer side surfaces of the respective substrates, the alignment films each being a photo-alignment film formed from a material exhibiting photo-alignment performance, the liquid crystal layer containing a liquid crystal material and a radical scavenger.

Adhesion promoter

Compositions useful for improving the adhesion of coating compositions, such as dielectric film-forming compositions, include a hydrolyzed poly(alkoxysilane). These compositions are useful in methods of improving the adhesion of coating compositions to a substrate.

Adhesion promoter

Compositions useful for improving the adhesion of coating compositions, such as dielectric film-forming compositions, include a hydrolyzed poly(alkoxysilane). These compositions are useful in methods of improving the adhesion of coating compositions to a substrate.