Abstract: Embodiments in accordance with the present invention encompass compositions containing the polymer formed from a variety of polycycloolefinic monomers optionally at least one of which monomer contains an additional unpolymerized ethylenic bond, organophosphorus compound, optionally hexagonal boron nitride, a crosslinker, a free radical initiator, a tackifier and one or more suitable additives. The compositions of this invention can be formed into a variety of three-dimensional insulating articles upon exposure to suitable high temperature, such as for example films. The objects formed from the compositions of this invention exhibit hitherto unattainable low dielectric constant and low-loss properties, fire retardancy and very high thermal properties. The compositions of this invention may additionally contain one or more organic or inorganic filler materials, which provide improved thermo-mechanical properties in addition to excellent thermal and dielectric properties.

Abstract: The present invention relates to photosensitive compositions containing polynorbornene (PNB) polymers and certain additives that are useful for forming microelectronic and/or optoelectronic devices and assemblies thereof, and more specifically to compositions encompassing PNBs and certain multifunctional crosslinking agents, and two or more phenolic compounds which are resistant to thermo-oxidative chain degradation and exhibit improved mechanical properties.

Abstract: The present invention relates to photosensitive compositions containing polynorbornene (PNB) polymers and certain additives that are useful for forming microelectronic and/or optoelectronic devices and assemblies thereof, and more specifically to compositions encompassing PNBs and certain multifunctional crosslinking agents, and two or more phenolic compounds which are resistant to thermo-oxidative chain degradation and exhibit improved mechanical properties.

Abstract: The present disclosure provides novel polyimides having a high aliphatic monomer-content and improved optical properties and solubility relative to conventional polyimides. Also provided are methods of making the polyimides, articles of manufacture incorporating the polyimides and methods for making these, as well as methods of using the polyimides.

Abstract: Methods of functionalizing ?-halogenated hydroxy acid-based polymers and coupling ?-halogenated hydroxy acid-based polymers are provided. Suitable ?-halogenated hydroxy acid-based polymers include ?-halogenated polyesters and ?-halogenated acrylate-based inimers. Methods include coupling ?-halogenated polyesters and functionalizing ?-halogenated polyesters without polymer cleavage. Certain ?-halogenated hydroxy acid-based polymers may be functionalized, crosslinked or, intiate polymerization by inducing the ?-halogenated hydroxy acid-based polymers to make a dioxolenium ion intermediate. The ?-halogenated hydroxy acid-based polymers may also be functionalized using a radical trap.

Abstract: Methods of functionalizing ?-halogenated hydroxy acid-based polymers and coupling ?-halogenated hydroxy acid-based polymers are provided. Suitable ?-halogenated hydroxy acid-based polymers include ?-halogenated polyesters and ?-halogenated acrylate-based inimers. Methods include coupling ?-halogenated polyesters and functionalizing ?-halogenated polyesters without polymer cleavage. Certain ?-halogenated hydroxy acid-based polymers may be functionalized, crosslinked or, intiate polymerization by inducing the ?-halogenated hydroxy acid-based polymers to make a dioxolenium ion intermediate. The ?-halogenated hydroxy acid-based polymers may also be functionalized using a radical trap.