processo de obtenção de oligômeros hidroxilados de policarbonato de bisfenol a e uso

• Main Authors: MARIA ISABEL FELISBERTI, THIAGO DO CARMO RUFINO
• Format: Patent
• Language: Portuguese
• Published: 23.01.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

processo de obtenção de oligómeros hidroxilados de policarbonato de bisfenol a e uso a presente invenção refere-se a um processo de obtenção de oligômeros de policarbonato de bisfenol a hidroxilados, de massa molar controlada por meio de solvólise em meio homogêneo empregando-se glicóis, gerando bisfenol a como produto secundário. a presente invenção se insere no campo de aplicação da química, mais especificamente, na área de polímeros, na produção de polióis como componentes reativos em formulações de termoplásticos, termofixos e elastõmeros. a incorporação destes oligômeros em formulações visa à modulação de propriedades físico-químicas, ópticas e mecânicas do produto. a presente invenção refere-se a um processo de obtenção de oligômeros de policarbonato de bisfenol a hidroxilados que pode ser empregada na reciclagem química de rejeitos de policarbonato. The present invention relates to a method for obtaining hydroxylated oligomers of bisphenol A polycarbonate, with a molar mass controlled by a chemical reaction with a solvent in a homogenous medium using glycols, generating bisphenol A as a by-product. The present invention relates to the field of applied chemistry and more specifically to the field of polymers, in the production of polyols as reactive components in formulations of thermoplastics, thermosets and elastomers. The incorporation of these oligomers into formulations is intended to modulate the physico-chemical, optical and mechanical properties of the product. The present invention relates to a method for obtaining hydroxylated oligomers of bisphenol A polycarbonate that can be used in the chemical recycling of polycarbonate waste.