Show metadata Hide metadata

(19)

(11)

2 467 029

(13)

(51)

IPC

C08G63/06(2006-01-01)

C08G63/60(2006-01-01)

C08G63/78(2006-01-01)

C08G63/90(2006-01-01)

(21) (22)

Application

2011142892/04, 2011-10-25

(24)

Start date

2011-10-25

(22)

Actual filing date

2011-10-25

(45)

Published

2012-11-20

(72)

Inventor

Potapov Aleksandr Gennad'EvichMozgunova Nadezhda Vladimirovna

(73)

Holder

Rossijskaja Federatsija, Ot Imeni Kotoroj Vystupaet Ministerstvo Promyshlennosti I Torgovli Rossijskoj Federatsii

METHOD OF OBTAINING BIODEGRADABLE POLYESTERS Russian patent published in 2012 - IPC C08G63/06 C08G63/60 C08G63/78 C08G63/90

Abstract RU 2467029 C1

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method of obtaining biodegradable complex polyesters based on hydroxycarboxylic acids, used as polymers of household purpose. Method lies in direct polycondensation of one or several hydroxycarboxylic acids or their mixture with aliphatic dicarboxylic acids and dioles or diamines at higher temperature and normal pressure in presence of titanium tetrabutoxide. Removal of waste products of polycondensation is carried out at 180-200°C applying as exsiccant zeolites, which are introduced directly into reaction medium.

EFFECT: method makes it possible to obtain biodegradable polyesters based on hydroxycarboxylic acids with high molecular weight at relatively low temperatures of synthesis and normal pressure.

10 ex

Similar patents RU2467029C1

Title	Year	Author	Number
METHOD OF PRODUCING ALIPHATIC AND ALIPHATIC-AROMATIC POLYESTERS	2011	Potapov Aleksandr Gennad'Evich Mozgunova Nadezhda Vladimirovna	RU2480486C1
METHOD OF PRODUCING BIODEGRADABLE COPOLYMER OF POLYESTER AND ETHERAMIDE	2016	Alfonso Alegre Maria Jose Zagalaz Lasierra Patricia Caballero Lopez Miguel Angel	RU2720986C1
POLYESTER RESIN, MOULDED PRODUCT AND PRODUCTION PROCESS	2005	Jokojama Khirosi Okamoto Khirosige Aminaka Muneaki	RU2357977C2
HIGH-MOLECULAR WEIGHT POLYMER ESTERS CHARACTERISED BY LOW CONTENT OF ACETALDEHYDE	2008	Dzhernigan Mehri Tereza	RU2474592C2
POLYESTER POLYMER WITH HIGH CHARACTERISTIC VISCOCITY OF MOLTEN PHASE, CATALYSED WITH ANTIMONY-CONTAINING COMPOUNDS	2005	Dzhernigan Mehri Tereza Ehkart Majkl Pol Bonner Richard Dzhill	RU2376323C2
HIGH-MOLECULAR MASS POLYESTER PRODUCTION PROCESS	2004	Mikitaev Abdulakh Kasbulatovich Mikitaev Muslim Abdulakhovich	RU2268901C1
MOLTEN PHASE-DERIVED POLYESTER-BASED COMPOSITIONS HAVING IMPROVED THERMAL OXIDATIVE STABILITY, AND METHODS OF PRODUCING AND USING SAID COMPOSITIONS	2009	Dzhenkins Dzhejson Kristofer Briki Denis Ehdvard Khauehll Ehrl Ehdmondson Grin Kehrol Dzhulliard	RU2550211C2
METHOD FOR PREPARATION OF POLYALKYLENE THEREPHTHALATES, METHOD TO MANUFACTURE MOULDED POLYALKYLENE THEREPHTHALATE PART AND MOULDED POLYALKYLENETHEREPHTHALATE PART	2004	Jokojama Khirosi Fudzimoto Katsukhiro Aminaka Muneaki Sugimoto Dzjuniti Katsumata Tsutomu	RU2323947C2
BIODEGRADABLE ALIPHATIC-AROMATIC POLYETHERS	2006	Bastioli Katja Militsia Titsiana Floridi Dzhovanni Skaffidi Lallaro Andrea Chella Dzhan Domeniko Tozin Mauritsio	RU2415879C2
POLYETHER SOLID-PHASE POLYMERISATION CATALYST FOR RESINS WITH LOW FORMATION OF ACETALDEHYDE	2007	Massi Fred L. Kallander Duglas Dehvid	RU2428437C2

RU 2 467 029 C1

Authors

Potapov Aleksandr Gennad'Evich

Mozgunova Nadezhda Vladimirovna

Dates

2012-11-20—Published

2011-10-25—Filed