scholarly journals New Negative-type Photosensitive Alkaline-developable Semi-aromatic Polyimides with Low Dielectric Constants Based on Poly(amic acid) from Aromatic Diamine Containing Adamantyl Units and Alicyclic Dianhydrides, A Cross-linker, and A Photoacid Generator

2005 ◽  
Vol 37 (4) ◽  
pp. 270-276 ◽  
Author(s):  
Yasufumi Watanabe ◽  
Yuji Shibasaki ◽  
Shinji Ando ◽  
Mitsuru Ueda
Keyword(s):  
Amic Acid ◽  
Dielectric Constants ◽  
Aromatic Diamine ◽  
Aromatic Polyimides ◽  
Negative Type ◽  
Low Dielectric ◽  
Cross Linker ◽  
Photoacid Generator

High optical transparency, low dielectric constant, and light color of organosoluble polyamides based on 10,10-bis[4-(4- amino-3-trifluoromethylphenoxy)phenyl]- 9(10H)-anthrone

2019 ◽  
Vol 32 (4) ◽  
pp. 444-454 ◽  
Author(s):  
Juan Zhong ◽  
Zhen-Zhong Huang ◽  
Wei-Hong Wei ◽  
Bin Huang ◽  
Cheng Song
Keyword(s):  
Molecular Weight ◽  
Average Molecular Weight ◽  
Dielectric Constants ◽  
Aromatic Diamine ◽  
Cutoff Wavelength ◽  
Visible Absorption ◽  
Low Dielectric ◽  
Dimethyl Acetamide ◽  
Step Procedure ◽  
Light Color

A new aromatic diamine, 10,10-bis[4-(4-amino-3-trifluoromethylphenoxy)phenyl]-9( 10H)-anthrone (BATFPA), has been synthesized from anthrone via three-step procedure. Low-temperature polycondensation of BATFPA with various aromatic dicarboxylic acid chlorides produced novel fluorinated polyamides with moderate to high inherent viscosities of 0.75–1.03 dL/g while the weight-average molecular weight and number-average molecular weight were in the range of 66,000–74,000 and 37,000–41,000, respectively. Nearly, all the polymers were readily soluble in polar solvents, such as N,N-dimethyl acetamide (DMAc), N-methyl-2-pyrrolidinone, pyridine, and tetrahydrofuran, and afforded transparent, light-colored, and flexible films upon casting from DMAc solvent. These polymers had glass transition temperatures of 249–309°C, 10% weight loss temperatures of 486–517°C, and char yields of 53–61% at 800°C under nitrogen. All polymers were amorphous and their films exhibited tensile strengths of 64–86 MPa, tensile moduli of 1.8–2.2 GPa, and elongation at break of 10–18%. These polymers had dielectric constants ranging from 3.25 to 3.76 (100 Hz), low moisture uptake in the range of 0.72–1.18%, and high transparency with an ultraviolet–visible absorption cutoff wavelength in the 360–378 nm range.

Three-Component Negative-Type Photoresist Based on Calix[4]resorcinarene, a Cross-linker, and a Photoacid Generator

1998 ◽  
Vol 10 (8) ◽  
pp. 2230-2234 ◽  
Author(s):  
Mitsuru Ueda ◽  
Daisuke Takahashi ◽  
Tomonari Nakayama ◽  
Osamu Haba
Keyword(s):  
Negative Type ◽  
Cross Linker ◽  
Photoacid Generator

scholarly journals Structural and dielectric properties of some epiclon-based polyimide films

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Andreea Irina Cosutchi ◽  
Camelia Hulubei ◽  
Iuliana Stoica ◽  
Marius Dobromir ◽  
Silvia Ioan
Keyword(s):  
Chemical Structure ◽  
Electrical Conductance ◽  
Dielectric Constants ◽  
Isothermal Treatment ◽  
Cross Linking ◽  
Polyimide Films ◽  
Aromatic Polyimides ◽  
Low Dielectric ◽  
Dielectric Layers ◽  
High Roughness

AbstractSurface and electrical properties of two flexible and cross-linked epiclon based polyimide films were investigated. Surface tension measurements indicate an increased hydrophobicity due to both isothermal treatment - which induces imidization and cross-linking - and to the chemical structure, characterized by the different number of ether linkages in the polyimide backbone. Morphology of film surfaces, modified by plasma treatment, shows high roughness and, implicitly, improved adhesion, as required in electronics. The studied polyimides exhibit low dielectric constants and dielectric losses, comparatively to conventional aromatic polyimides. The electrical conductance and resistivity characteristics of these polymers recommend them as good insulators for dielectric layers in microelectronic applications.

Synthesis and characterization of novel fluorinated poly(ether imide)s containing pyridine and/or phenylphosphine oxide moieties

2018 ◽  
Vol 31 (5) ◽  
pp. 485-496 ◽  
Author(s):  
Xiao-Lan Zhang ◽  
Xiao-Ling Liu ◽  
Qiu-Ying Wang ◽  
Zhen-Zhong Huang ◽  
Shou-Ri Sheng
Keyword(s):  
Catalytic Reduction ◽  
Dielectric Constants ◽  
Aromatic Diamine ◽  
Cutoff Wavelength ◽  
Good Thermal Stability ◽  
Low Dielectric ◽  
Flexible Polymer ◽  
Thermal Imidization ◽  
Phenylphosphine Oxide

4-(4-Trifluoromethylphenyl)-2,6-bis[4-(4-amino-2-trifluoromethylphenoxy)phenyl]pyridine (9FPBAPP), as a new aromatic diamine, was prepared by a modified Chichibabin reaction of 4-(4-nitro-2-trifluoromethylphenoxy)acetophenone with 4-triflouromethylbenzaldehyde, followed by a catalytic reduction. A series of fluorinated poly(ether imide)s containing pyridine and/or phenylphosphine oxide moieties were prepared from bis(3-aminophenyl)phenylphosphine oxide (BAPPO), 2,2′-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA), and 9FPBAPP via a conventional two-step thermal imidization procedure with various mole ratios of BAPPO and 9FPBAPP. All the polymers were amorphous and soluble in common organic solvents such as N, N-dimethylacetamide and N-methyl-2-pyrrolidone and had Tg’s of 277–285°C, 5% weight loss temperature of 521–550°C in nitrogen. Furthermore, high char yields and good limited oxygen index values indicated that these polymers exhibited good thermal stability and flame-retardant property. Tough and flexible polymer films also had good mechanical properties with tensile strengths of 75–99 MPa, tensile moduli of 1.1–1.6 GPa, and elongations at break of 12%–24% and low dielectric constants of 2.81–3.53 (1 MHz), as well as high optical transparency with the ultraviolet cutoff wavelength in the range of 350–384 nm.

scholarly journals A Negative-Type Photosensitive Poly(3-hexylthiophene) with Cross-Linker and Photoacid Generator

2009 ◽  
Vol 41 (10) ◽  
pp. 808-809 ◽  
Author(s):  
Keita Endo ◽  
Tomohito Ogura ◽  
Tomoya Higashihara ◽  
Mitsuru Ueda
Keyword(s):  
Negative Type ◽  
Cross Linker ◽  
Photoacid Generator

Highly soluble and colorless fluorinated poly(ether imide)s based on 4,4’-(2,5-tolylenedioxy)diphthalic anhydride and trifluoro methyl-substituted aromatic bis(ether amine)s

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Chin-Ping Yang ◽  
Sheng-Huei Hsiao ◽  
Yu-Yang Su ◽  
Chun-Hung Lin ◽  
Mei-Yuan Hsu
Keyword(s):  
Moisture Absorption ◽  
Amic Acid ◽  
Nitrogen Atmosphere ◽  
Dielectric Constants ◽  
Step Method ◽  
Polar Solvents ◽  
Visible Absorption ◽  
Yellowness Index ◽  
Low Dielectric ◽  
Solution Cast

AbstractA series of novel fluorinated poly(ether imide)s (PEIs) IVa-h were synthesized from 4,4’-(2,5-tolylenedioxy)diphthalic anhydride (I) and various trifluoromethyl-substituted aromatic bis(ether amine)s (IIa-h) via a conventional two-step method with thermal or chemical imidization of the precursor poly(amic acid)s. These PEIs were readily soluble in a variety of organic solvents; they were soluble with a concentration higher than 10% in amide-type polar solvents, ether type solvents, and chlorinated hydrocarbons. The solution-cast films showed a high optical transparency and low color intensity, with an ultraviolet-visible absorption edge of 371- 377 nm and low b* values (a yellowness index) of 4.9-7.5. These films were strong and tough with tensile strength of 90-103 MPa. They exhibited glass-transition temperatures (Tg) in the range of 207-293oC, with 10% weight loss temperature in excess of 500oC in air or nitrogen atmosphere. They also showed low-dielectric constants (2.95-3.37 at 1 MHz) and low moisture absorption (0.20- 0.67 wt %).

Sign in / Sign up

Export Citation Format

Share Document