GB1361080A – Process for solid phase condensation of thermoplastic polyesters
– Google Patents
GB1361080A – Process for solid phase condensation of thermoplastic polyesters
– Google Patents
Process for solid phase condensation of thermoplastic polyesters
Info
Publication number
GB1361080A
GB1361080A
GB4928371A
GB4928371A
GB1361080A
GB 1361080 A
GB1361080 A
GB 1361080A
GB 4928371 A
GB4928371 A
GB 4928371A
GB 4928371 A
GB4928371 A
GB 4928371A
GB 1361080 A
GB1361080 A
GB 1361080A
Authority
GB
United Kingdom
Prior art keywords
solid phase
condensate
oct
thermoplastic polyesters
phase condensation
Prior art date
1970-10-23
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4928371A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1970-10-23
Filing date
1971-10-22
Publication date
1974-07-24
1971-10-22
Application filed by Ciba Geigy AG
filed
Critical
Ciba Geigy AG
1974-07-24
Publication of GB1361080A
publication
Critical
patent/GB1361080A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
C08G63/16—Dicarboxylic acids and dihydroxy compounds
C08G63/20—Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
C08G63/78—Preparation processes
C08G63/80—Solid-state polycondensation
Abstract
1361080 Solid phase polymerization CIBAGEIGY AG 22 Oct 1971 [23 Oct 1970] 49283/71 Heading C3R A process for the solid phase polycondensation of a thermoplastic polyester comprises maintaining the condensate at a pressure below 1 torr. and at a temperature from 50 to 5‹ C. below its initial melting point in contact with a stream of inert gas fed in at a ratio of less than 2 litres per hour per kilogram of the polymer. The condensate is preferably in the form of particles of uniform size, e.g. 0À5 to 5 mm. in any dimension. Suitable inert gases are nitrogen carbon dioxide, industrial waste gases, helium and argon. The polyester used in the examples is polyethylene terephthalate.
GB4928371A
1970-10-23
1971-10-22
Process for solid phase condensation of thermoplastic polyesters
Expired
GB1361080A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
AT957470
1970-10-23
Publications (1)
Publication Number
Publication Date
GB1361080A
true
GB1361080A
(en)
1974-07-24
Family
ID=3615368
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4928371A
Expired
GB1361080A
(en)
1970-10-23
1971-10-22
Process for solid phase condensation of thermoplastic polyesters
Country Status (10)
Country
Link
AU
(1)
AU3464271A
(en)
BE
(1)
BE773458A
(en)
BR
(1)
BR7107078D0
(en)
CA
(1)
CA969300A
(en)
DE
(1)
DE2152380A1
(en)
ES
(1)
ES396521A1
(en)
FR
(1)
FR2111798B1
(en)
GB
(1)
GB1361080A
(en)
NL
(1)
NL7114595A
(en)
ZA
(1)
ZA716800B
(en)
1971
1971-10-04
BE
BE773458A
patent/BE773458A/en
unknown
1971-10-12
ZA
ZA716800A
patent/ZA716800B/en
unknown
1971-10-15
AU
AU34642/71A
patent/AU3464271A/en
not_active
Expired
1971-10-18
ES
ES396521A
patent/ES396521A1/en
not_active
Expired
1971-10-20
CA
CA125,649A
patent/CA969300A/en
not_active
Expired
1971-10-21
DE
DE19712152380
patent/DE2152380A1/en
active
Pending
1971-10-22
GB
GB4928371A
patent/GB1361080A/en
not_active
Expired
1971-10-22
NL
NL7114595A
patent/NL7114595A/xx
not_active
Application Discontinuation
1971-10-22
BR
BR7078/71A
patent/BR7107078D0/en
unknown
1971-10-22
FR
FR7138140A
patent/FR2111798B1/fr
not_active
Expired
Also Published As
Publication number
Publication date
DE2152380A1
(en)
1972-04-27
FR2111798B1
(en)
1976-04-02
NL7114595A
(en)
1972-04-25
FR2111798A1
(en)
1972-06-09
ES396521A1
(en)
1974-05-01
BR7107078D0
(en)
1973-03-29
ZA716800B
(en)
1972-07-26
AU3464271A
(en)
1973-04-19
CA969300A
(en)
1975-06-10
BE773458A
(en)
1972-01-31
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Legal Events
Date
Code
Title
Description
1974-12-04
PS
Patent sealed
1981-06-10
PCNP
Patent ceased through non-payment of renewal fee
