Embodiments in accordance with the present invention provide waveguide structures and methods of forming such structures where core and laterally adjacent cladding regions are defined. Some embodiments of the present invention provide waveguide structures where core regions are collectively surrounded by laterally adjacent cladding regions and cladding layers and methods of forming such structures.
Embodiments in accordance with the present invention provide waveguide structures and methods of forming such structures where core and laterally adjacent cladding regions are defined. Some embodiments of the present invention provide waveguide structures where core regions are collectively surrounded by laterally adjacent cladding regions and cladding layers and methods of forming such structures.
Various compositions encompassing polymers containing acidic pendent groups in combination with one or more reactive olefinic compounds and a photoacid generators form self-imagable negative tone films. Examples of such polymers include polymers and copolymers containing norbornene-type repeating units having acidic pendent groups, ring opened maleic anhydride polymers, polyacrylic acid, polyhydroxystyrene polymers, and the like. The films formed from such compositions provide self imagable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices, among other applications.
含有酸性悬垂基团的聚合物与一种或多种活性烯烃化合物和光酸发生器的各种组合物可形成自显影负色调薄膜。此类聚合物的例子包括含有酸性悬垂基团的降冰片烯类重复单元的聚合物和共聚物、开环马来酸酐聚合物、聚丙烯酸、聚羟基苯乙烯聚合物等。由此类组合物形成的薄膜具有自显影性、低 K 值、热稳定性,可用于微电子和光电设备及其他应用中。
High impact strength 3D printing materials derived from polycycloolefin monomers and crosslinkers
申请人:PROMERUS, LLC
公开号:US11142662B2
公开(公告)日:2021-10-12
Embodiments in accordance with the present invention encompass a composition containing a latent catalyst and a compound capable of generating a Bronsted acid with a counterion capable of coordinating and activating the latent catalyst along with one or more monomers which undergo ring open metathesis polymerization (ROMP) and one or more multi-functional crosslinkable molecules when said composition is exposed to a suitable radiation forms a three-dimensional (3D) object. The catalyst system employed therein can be sensitive to oxygen and thus inhibits polymerization in ambient atmospheric conditions. The three-dimensional objects made by this process exhibits improved mechanical properties, particularly, high distortion temperature, impact strength, elongation to break, among others. Accordingly, compositions of this invention are useful as 3D inkjet materials for forming high impact strength objects of various sizes with microscale features lower than 100 microns, among various other uses.
Long shelf life stable photoactive mass polymerizable polycycloolefin compositions as optical materials
申请人:PROMERUS, LLC
公开号:US11535702B2
公开(公告)日:2022-12-27
Embodiments in accordance with the present invention encompass compositions encompassing a latent organo-ruthenium compound, a photosensitizer and one or more monomers which undergo ring open metathesis polymerization (ROMP) when said composition is exposed to suitable actinic radiation to form a substantially transparent film or a three dimensional object. Surprisingly, the compositions are very stable at ambient conditions to temperatures up to 80° C. for several weeks and undergo mass polymerization only when subjected to actinic radiation under inert atmosphere such as for example a blanket of nitrogen. Accordingly, compositions of this invention are useful in various opto-electronic applications, including as 3D printing materials, coatings, encapsulants, fillers, leveling agents, among others.
根据本发明的实施方案,本发明的组合物包括一种潜在的有机钌化合物、一种光敏剂和一种或多种单体,当所述组合物暴露在适当的光辐射下时,这些单体会发生开环偏聚聚合反应(ROMP),从而形成基本透明的薄膜或三维物体。令人惊奇的是,这种组合物在环境条件下非常稳定,温度最高可达 80 摄氏度,可持续数周,并且只有在惰性气氛(例如氮气毯)下接受光辐射时才会发生大规模聚合。因此,本发明的组合物可用于各种光电子应用,包括用作 3D 打印材料、涂层、封装材料、填料、流平剂等。