GB1224038A – Heat treatments of aromatic polyester filaments
– Google Patents
GB1224038A – Heat treatments of aromatic polyester filaments
– Google Patents
Heat treatments of aromatic polyester filaments
Info
Publication number
GB1224038A
GB1224038A
GB3248768A
GB3248768A
GB1224038A
GB 1224038 A
GB1224038 A
GB 1224038A
GB 3248768 A
GB3248768 A
GB 3248768A
GB 3248768 A
GB3248768 A
GB 3248768A
GB 1224038 A
GB1224038 A
GB 1224038A
Authority
GB
United Kingdom
Prior art keywords
stage
relaxation
filaments
temperature
aromatic polyester
Prior art date
1968-07-08
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
GB3248768A
Inventor
Richard William Harold Benson
Alfred Brownbridge Thompson
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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.)
1968-07-08
Filing date
1968-07-08
Publication date
1971-03-03
1968-07-08
Application filed by Imperial Chemical Industries Ltd
filed
Critical
Imperial Chemical Industries Ltd
1968-07-08
Priority to GB3248768A
priority
Critical
patent/GB1224038A/en
1969-07-08
Priority to NL6910481A
priority
patent/NL6910481A/xx
1969-07-08
Priority to DE19691934644
priority
patent/DE1934644B2/en
1971-03-03
Publication of GB1224038A
publication
Critical
patent/GB1224038A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
D—TEXTILES; PAPER
D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
Abstract
1,224,038. Heat treatment of aromatic polyester filaments. IMPERIAL CHEMICAL INDUSTRIES Ltd. (E. D. Andrews). 2 July, 1969 [8 July, 1968], No. 32487/68. Heading B5B. [Also in Division D1] A multi-stage post-draw heat treatment process for aromatic polyester filaments comprises at least one intermediate heat treatment stage followed by a relaxation stage, in which intermediate stage the temperature is not less than the previous draw temperature and subsequent relaxation temperature, the tension is higher than the relaxation stage tension, and the permitted reduction in filament length is between zero and 3%. The process involves no further stretching, and preferably has two stages, i.e. a setting stage and a relaxation stage. The aromatic polyester filaments are defined as filaments containing at least 50% of a polyester containing at least 90% units derived from the same dicarboxylic acid and diol; filaments containing at least 95% ethylene terephthalate units are specified. The heat setting stage may be performed at constant length, and the relaxation at zero tension. The setting temperature is preferably 200-250‹ C., and the relaxation temperature 200‹ C., although temperatures as low as 100‹ C. may be used. Preferred setting times are between 0À001 and 0À05 mins., and relaxation times greater than 0À05 mins. Filaments and yarns so treated have substantially reduced shrinkage combined with little or no decrease in elastic modulus and tenacity.
GB3248768A
1968-07-08
1968-07-08
Heat treatments of aromatic polyester filaments
Expired
GB1224038A
(en)
Priority Applications (3)
Application Number
Priority Date
Filing Date
Title
GB3248768A
GB1224038A
(en)
1968-07-08
1968-07-08
Heat treatments of aromatic polyester filaments
NL6910481A
NL6910481A
(en)
1968-07-08
1969-07-08
DE19691934644
DE1934644B2
(en)
1968-07-08
1969-07-08
Process for the heat treatment of drawn threads made of aromatic polyesters
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB3248768A
GB1224038A
(en)
1968-07-08
1968-07-08
Heat treatments of aromatic polyester filaments
Publications (1)
Publication Number
Publication Date
GB1224038A
true
GB1224038A
(en)
1971-03-03
Family
ID=10339346
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3248768A
Expired
GB1224038A
(en)
1968-07-08
1968-07-08
Heat treatments of aromatic polyester filaments
Country Status (3)
Country
Link
DE
(1)
DE1934644B2
(en)
GB
(1)
GB1224038A
(en)
NL
(1)
NL6910481A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4003974A
(en)
*
1975-04-04
1977-01-18
E. I. Du Pont De Nemours And Company
Continuous spin-drawing process for preparing polyethylene terephthalate yarns
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2318887C3
(en)
*
1973-04-14
1982-11-11
Akzo Gmbh, 5600 Wuppertal
Process for the production of polyester threads by shrinking heat-drawn threads in two stages
1968
1968-07-08
GB
GB3248768A
patent/GB1224038A/en
not_active
Expired
1969
1969-07-08
NL
NL6910481A
patent/NL6910481A/xx
not_active
Application Discontinuation
1969-07-08
DE
DE19691934644
patent/DE1934644B2/en
not_active
Withdrawn
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4003974A
(en)
*
1975-04-04
1977-01-18
E. I. Du Pont De Nemours And Company
Continuous spin-drawing process for preparing polyethylene terephthalate yarns
Also Published As
Publication number
Publication date
NL6910481A
(en)
1970-01-12
DE1934644B2
(en)
1978-07-13
DE1934644A1
(en)
1970-02-26
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