LTIP358A - Process for increasing the molecular weight of polyamides and nylon - Google Patents

Process for increasing the molecular weight of polyamides and nylon

Info

Publication number
LTIP358A
LTIP358A LTIP358A LTIP358A LTIP358A LT IP358 A LTIP358 A LT IP358A LT IP358 A LTIP358 A LT IP358A LT IP358 A LTIP358 A LT IP358A LT IP358 A LTIP358 A LT IP358A
Authority
LT
Lithuania
Prior art keywords
polyamides
nylon
increasing
molecular weight
molecular
Prior art date
Application number
LTIP358A
Inventor
Robert Clayton Wheland
Ivan Keith Miller
Original Assignee
Du Pont
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 Du Pont filed Critical Du Pont
Publication of LTIP358A publication Critical patent/LTIP358A/en
Publication of LT3237B publication Critical patent/LT3237B/en

Links

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
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • C08G69/28—Preparatory processes
    • 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
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/04—Preparatory processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyamides (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
LTIP358A 1988-08-01 1993-02-25 Process for increasing the molecular weight of polyamides and nylon LT3237B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/227,035 US4912175A (en) 1988-08-01 1988-08-01 Process for in creasing polyamide molecular weight with P containing catalyst

Publications (2)

Publication Number Publication Date
LTIP358A true LTIP358A (en) 1994-09-25
LT3237B LT3237B (en) 1995-04-25

Family

ID=22851476

Family Applications (1)

Application Number Title Priority Date Filing Date
LTIP358A LT3237B (en) 1988-08-01 1993-02-25 Process for increasing the molecular weight of polyamides and nylon

Country Status (10)

Country Link
US (1) US4912175A (en)
EP (1) EP0353969B1 (en)
JP (1) JP2779243B2 (en)
AR (1) AR243562A1 (en)
CA (1) CA1320611C (en)
DE (1) DE68915890T2 (en)
ES (1) ES2055074T3 (en)
LT (1) LT3237B (en)
TR (1) TR23975A (en)
WO (1) WO1990001513A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966949A (en) * 1988-10-20 1990-10-30 E. I. Du Pont De Nemours And Company Process for increasing the molecular weight of a polyamide with p containing catalyst
US5116919A (en) * 1990-12-05 1992-05-26 E. I. Du Pont De Nemours And Company Process for increasing the relative viscosity of polyamides with reduced thermal degradation
US5258469A (en) * 1991-01-24 1993-11-02 E. I. Du Pont De Nemours And Company Preparation of 2-(pyridyl)ethyl bis-(trialkyl silyl)phosphonate derivatives substituted phosphorous compounds
US5194616A (en) * 1991-01-24 1993-03-16 E. I. Du Pont De Nemours And Company Preparation of 2-(pyridyl)ethyl bis-(trialkyl silyl)phosphonate derivatives
US5142000A (en) * 1991-08-28 1992-08-25 E. I. Du Pont De Nemours And Company Process for increasing polyamide molecular weight with organophosphonic acid or ester catalysts in the presence of alumina-containing titanium dioxide
ES2099411T3 (en) * 1992-12-22 1997-05-16 Ciba Geigy Ag INCREASE IN MOLECULAR WEIGHT OF POLYAMIDES.
US5496920A (en) * 1993-06-07 1996-03-05 Ciba-Geigy Corporation Increasing the molecular weight of polyamides
US5420230A (en) * 1993-09-20 1995-05-30 E. I. Du Pont De Nemours And Company Amidation catalyst concentrates
US5756596A (en) * 1993-12-16 1998-05-26 Ciba Specialty Chemicals Corporation Increasing the molecular weight of polyamides
US5543495A (en) * 1994-03-08 1996-08-06 E. I. Du Pont De Nemours And Company Process for increasing the molecular weight of polyamides and other condensation polymers
US5698658A (en) * 1996-05-31 1997-12-16 E. I. Du Pont De Nemours And Company Linear very high molecular weight polyamides and process for producing them
US6160167A (en) * 1998-04-21 2000-12-12 Bionumerik Pharmaceuticals, Inc. Mercaptans and disulfides
AU761267C (en) 1998-09-09 2007-08-09 Metabasis Therapeutics, Inc. Novel heteroaromatic inhibitors of fructose 1,6-bisphosphatase
FR2787797B1 (en) 1998-12-23 2006-01-06 Rhodianyl PROCESS FOR PRODUCING POLYAMIDE
ES2302706T3 (en) 2000-01-20 2008-08-01 Invista Technologies S.A.R.L. PROCESS TO PROLONG THE POLYAMIDE CHAIN.
ES2244488T3 (en) 2000-01-20 2005-12-16 Invista Technologies S.A.R.L. EXTENSION PROCESS OF POLYAMIDE CHAINS AND FUNCTIONALIZED POLYAMIDS PRODUCED BY THE SAME.
US7563774B2 (en) 2000-06-29 2009-07-21 Metabasis Therapeutics, Inc. Combination of FBPase inhibitors and antidiabetic agents useful for the treatment of diabetes
CN113563580B (en) * 2021-07-02 2024-02-23 中国纺织科学研究院有限公司 Method for improving molecular weight of copolyamide and product thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648695A (en) 1949-07-25 1953-08-11 Shell Dev Intramolecular esters of hydroxy or amino phosphinic acids
NL6601486A (en) * 1965-02-05 1966-08-08
US3365428A (en) * 1965-03-25 1968-01-23 Celanese Corp Polymerization of polyamide-precursor salt in the presence of a phosphinic acid
GB1084324A (en) * 1965-06-23
FR1531145A (en) * 1966-07-13 1968-06-28 Ici Ltd Polyamides
GB1193435A (en) * 1966-07-13 1970-06-03 Ici Ltd Polyamides
JPS5524193B2 (en) * 1971-09-17 1980-06-27
US3825508A (en) * 1972-05-04 1974-07-23 Teijin Ltd Production of polyamide from methyl substituted phthalic acid by melt polymerization in the presence of reducing phosphorus acid compound
US4390667A (en) * 1981-07-06 1983-06-28 Allied Corporation Process for increasing the melt viscosity of polyamide with aryl phosphate compound
US4433116A (en) * 1981-07-06 1984-02-21 Allied Corporation Process for increasing the relative viscosity of polycaprolactam with phosphite compound

Also Published As

Publication number Publication date
EP0353969B1 (en) 1994-06-08
ES2055074T3 (en) 1994-08-16
JPH04500080A (en) 1992-01-09
LT3237B (en) 1995-04-25
WO1990001513A1 (en) 1990-02-22
TR23975A (en) 1991-01-14
EP0353969A1 (en) 1990-02-07
CA1320611C (en) 1993-07-20
JP2779243B2 (en) 1998-07-23
DE68915890T2 (en) 1995-01-05
US4912175A (en) 1990-03-27
DE68915890D1 (en) 1994-07-14
AR243562A1 (en) 1993-08-31

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Legal Events

Date Code Title Description
MM9A Lapsed patents

Effective date: 19980225