GB1283066A - Optically anisotropic dopes comprising wholly aromatic polyamides - Google Patents

Optically anisotropic dopes comprising wholly aromatic polyamides

Info

Publication number
GB1283066A
GB1283066A GB581572A GB581572A GB1283066A GB 1283066 A GB1283066 A GB 1283066A GB 581572 A GB581572 A GB 581572A GB 581572 A GB581572 A GB 581572A GB 1283066 A GB1283066 A GB 1283066A
Authority
GB
United Kingdom
Prior art keywords
dopes
optically anisotropic
june
iii
wholly aromatic
Prior art date
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
GB581572A
Inventor
Stephanie Louise Kwolek
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority claimed from GB2977269A external-priority patent/GB1283064A/en
Publication of GB1283066A publication Critical patent/GB1283066A/en
Expired legal-status Critical Current

Links

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
    • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
    • D01F6/605—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides from aromatic polyamides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Artificial Filaments (AREA)

Abstract

1283066 Aromatic polyamide anisotropic dopes E I DU PONT DE NEMOURS & CO 12 June 1969 [12 June 1968] 5815/72 Divided out of 1283064 Heading C3R An optically anisotropic dope comprises (I) a carbocyclic wholly aromatic homo- or copolyamide wherein at least 90% of the bonds linking each aromatic nucleus are coaxial or parallel and oppositely extended and having an inherent viscosity (at 0À5 g./100 ml. in H 2 SO 4 at 30‹ C.), (II) a liquid medium comprising at least one of N,N-dimethyl acet-, propion- or butyramide; N,N - dimethylmethoxyacetamide; N,N - diethylacetamide; N - methyl - pyrrolidone, -piperidone or -caprolactam; N-ethylpyrrolidone; N - acetyl - pyrrolidine or -piperidine; N,N<SP>1</SP> - dimethyl - ethylene or -propylene urea; N,N,N<SP>1</SP>,N<SP>1</SP> - tetramethyl urea; and hexamethylphosphoramide and (III) LiCl, CaCl 2 or HCl, the concentration of (I) being above the "Critical Concentration Point" (C.C.P.) at which there is a sharp discontinuity in the viscosity v. concentration curve. The dopes claimed in Specifications 1,198,081, 1,259,788 and 1,262,002 are disclaimed. Component (III) may be formed in situ, e.g. by using Li 2 CO 3 to neutralize HCl formed during polymer preparation. The dope may also contain dyes, fillers, delustrants, U-V stabilizers or antioxidants. Alternative techniques to "C.C.P." for detecting anisotropy are described and general reference is made to the phase diagrams of Specification 1,283,064 as illustrating the effect of various factors on anisotropy. Suitable polymers and preparatory processes therefore are extensively described. Reference is made to Specification 1,283,065 in respect of the use of the dopes to form fibres. Other Specifications referred to are 871,758 to 871,581, 1,198,082 and 1,198,083.
GB581572A 1968-06-12 1969-06-12 Optically anisotropic dopes comprising wholly aromatic polyamides Expired GB1283066A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73641068A 1968-06-12 1968-06-12
GB2977269A GB1283064A (en) 1968-06-12 1969-06-12 Optically anisotropic dopes comprising wholly aromatic polyamides

Publications (1)

Publication Number Publication Date
GB1283066A true GB1283066A (en) 1972-07-26

Family

ID=26260073

Family Applications (2)

Application Number Title Priority Date Filing Date
GB581572A Expired GB1283066A (en) 1968-06-12 1969-06-12 Optically anisotropic dopes comprising wholly aromatic polyamides
GB4939571A Expired GB1283065A (en) 1968-06-12 1969-06-12 Aromatic polyamide fibers

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4939571A Expired GB1283065A (en) 1968-06-12 1969-06-12 Aromatic polyamide fibers

Country Status (1)

Country Link
GB (2) GB1283066A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011785A1 (en) * 1978-11-21 1980-06-11 Teijin Limited Aromatic polyamide composition and processes for preparing film and fiber therefrom
US4308374A (en) 1975-02-21 1981-12-29 Akzo N.V. Process for the preparation of poly-p-phenyleneterephthalamide
US5442003A (en) * 1992-05-28 1995-08-15 Sumitomo Chemical Company, Ltd. Para-aramid dope of low degree of polymerization, para-aramid fiber and para-aramid pulp produced therefrom and processes for producing the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4876040A (en) * 1986-05-15 1989-10-24 Kolon Industries, Inc. Two-stage process for preparing aromatic polyamide fiber
US4698414A (en) * 1986-09-16 1987-10-06 E. I. Du Pont De Nemours And Company Copoly(p-phenylene terephthalamide/2,6-naphthalamide)aramid yarn
ES2032297T3 (en) * 1987-11-16 1993-02-01 Kolon Industries Inc. PREPARATION PROCEDURE OF AROMATIC POLYAMIDE FIBERS AND FILM.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4308374A (en) 1975-02-21 1981-12-29 Akzo N.V. Process for the preparation of poly-p-phenyleneterephthalamide
EP0011785A1 (en) * 1978-11-21 1980-06-11 Teijin Limited Aromatic polyamide composition and processes for preparing film and fiber therefrom
US5442003A (en) * 1992-05-28 1995-08-15 Sumitomo Chemical Company, Ltd. Para-aramid dope of low degree of polymerization, para-aramid fiber and para-aramid pulp produced therefrom and processes for producing the same
AU671627B2 (en) * 1992-05-28 1996-09-05 Akzo N.V. Para-aramide dope of low degree of polymerization, para-aramide fiber and para-aramide pulp produced therefrom and processes for producing the same

Also Published As

Publication number Publication date
GB1283065A (en) 1972-07-26

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years