TEREPHTHALIC ACID ESTERS FORMATION
LaoBiz.com profiles the Laos Patent “TEREPHTHALIC ACID ESTERS FORMATION” from open registry fields, filed by 9449710 Canada Inc. on 2018-09-13; current status: Registered. Identifiers include application No. P/735; DIP id LAP735; protection kind Patent - PCT National Phase. Key dates: publication 2023-09-15; grant 2023-09-13; expiry reference 2038-09-13. Classification: C07C 67/03、C08G 63/91、C08J 11/24. Inventor(s)/designer(s): Adel, ESSADDAM, Fares, ESSADDAM. Abstract hint: The present disclosure relates to the formation of terephthalate esters of Formula (I) which are formed by the depolymerization of polyethy…. Unique application identifiers, holders and classification text are surfaced here to reduce near-duplicate IP landing pages; always verify against the competent office.
P/735
Mark
Key facts
- Type
- Patent
- App. no.
P/735- Status
- Registered
- Applicant
- 9449710 Canada Inc.
- Agent
- Lao Trademark Agency
- Filing date
- 2018-09-13
- Reg. no.
P/735- Publication
- 2023-09-15
- Registration / grant
- 2023-09-13
- Expiry
- 2038-09-13
- Protection kind
- Patent - PCT National Phase
- Gazette
- 224 · 2023-09-15
- Applicant address
- 9449710 Canada Inc. · 480 Fernand-Poitras Street, Terrebonne, Que'bec J6Y 1Y4, Canada · CA
- Agent address
- Lao Trademark Agency · 148-149 Ban Sisavath Kang, Unit 16 Chanthabury District, P.O. Box: 925, Vientiane · LA
- Nice / IPC classes
- C07C 67/03 · C08G 63/91 · C08J 11/24
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination
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Substantive examination
-
Published
-
Granted
Related records
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Abstract
The present disclosure relates to the formation of terephthalate esters of Formula (I) which are formed by the depolymerization of polyethylene terephthalate (PET) or poly(ethylene glycol-co-1,4-cyclohexanedimethanol terephthalate). The depolymerization process comprises contacting polyethylene terephthalate or poly(ethylene glycol-co-1,4-cyclohexanedimethanol terephthalate) with a solvent for swelling the polyester, an alcoholic solvent, and a sub-stoichiometric amount of an alkoxide. In the Formula (I) R 1 and R 2 are independently selected from the group consisting of hydrogen, C1-C6 alkyl, C1-C6 haloalkyl, C1-C6 hydroxyalkyl, optionally substituted C3-C8 cycloalkyl, optionally substituted (C1-C6 alkyl)(C3-C8 cycloalkyl), optionally substituted aryl, and optionally substituted (C1-C6 alkyl)(aryl); provided that one of R 1 or R 2 is not hydrogen.
The present disclosure relates to the formation of terephthalate esters of Formula (I) which are formed by the depolymerization of polyethylene terephthalate (PET) or poly(ethylene glycol-co-1,4-cyclohexanedimethanol terephthalate). The depolymerization process comprises contacting polyethylene terephthalate or poly(ethylene glycol-co-1,4-cyclohexanedimethanol terephthalate) with a solvent for swelling the polyester, an alcoholic solvent, and a sub-stoichiometric amount of an alkoxide. In the Formula (I) R 1 and R 2 are independently selected from the group consisting of hydrogen, C1-C6 alkyl, C1-C6 haloalkyl, C1-C6 hydroxyalkyl, optionally substituted C3-C8 cycloalkyl, optionally substituted (C1-C6 alkyl)(C3-C8 cycloalkyl), optionally substituted aryl, and optionally substituted (C1-C6 alkyl)(aryl); provided that one of R 1 or R 2 is not hydrogen.
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