Patent
Heat-resistant hydroxy-functional polyethers as thermoplastic barrier resins
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TLDR
In this article, a "cardo" diphenylene group was added to a dinucleophilic monomer with at least one dtglycidyl ether of a cardo bisphenol, such as bis(hydroxyphenyl)fluorene, phenolphthalein, or phenolphthalimidine.Abstract:
Hydroxy-functional polyethers having a "cardo" diphenylene group in their backbones are prepared by contacting at least one dinucleophilic monomer with at least one dtglycidyl ether of a cardo bisphenol, such as bis(hydroxyphenyl)fluorene, phenolphthalein, or phenolphthalimidine or a substituted cardo bisphenol, such as a substituted bis(hydroxyphenyl)fluorene, a substituted phenolphthalein or a substituted phenolphthalimidine, under conditions sufficient to cause the nucleophillo moieties of the dinucleophilic monomer to react with epoxy moieties to form a polymer backbone containing pendant hydroxy moieties and ether, imino, amino, sulfonamido or ester linkages. These polyethers possess a combination of high barrier to oxygen transmission (i.e., oxygen transmission rate less than 10.0 cm 3 -mil/100 in 2 -atm-day to oxygen) and high heat resistance (i.e., Tg above 120° C.). These polyethers are suitable for use in the manufacture of retort-sterilizable packaging materials exhibiting high barrier to oxygen.read more
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Patent
Hydroxyl functionalized polyetheramines as barrier packaging for oxygen-sensitive materials
H. Craig Silvis,Jerry E. White +1 more
TL;DR: Polyetheramines as mentioned in this paper are thermoplastic polymers having aromatic ether/amine repeating units in their backbones and pendant hydroxyl moieties, such as piperazine or ethanolamine.
Patent
Hydroxy-functional polyesters as thermoplastic barrier resins
Michael N. Mang,Jerry E. White +1 more
TL;DR: In this paper, the authors propose to use diglycidyl ethers of dihydric aromatic compounds such as bisphenol A with resorcinol to obtain improved barrier to oxygen.
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Amide and hydroxymethyl functionalized polyethers as thermoplastic barrier resins
TL;DR: In this paper, the authors propose to use pendent hydroxyl moieties and pendent amido, N-substituted amido and/or hydroxyalkyl mixtures for improved barrier to oxygen.
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Almer Carl J,William J. Schultz +1 more
TL;DR: In this paper, a method of improving epoxy resin compositions to provide a cured resin having improved glass transition temperature and toughness characteristics is provided, which includes providing in an epoxy resin composition an effective amount of a 9,9-bis(hydroxphenyl)fluorene composition.
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TL;DR: In this paper, a hardener component containing a phenolic novolak resin modified with polybutadiene derivative-oxygen-containing aromatic hydrocarbon resin as a hardening component is used for IC encapsulation.