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
EP0604367B1 (en) * 1992-12-22 1997-01-29 Ciba SC Holding AG Molecular weight increasing 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
PL205184B1 (en) 1998-09-09 2010-03-31 Metabasis Therapeutics Inc Novel heteroaromatic inhibitors of fructose 1,6-bisphosphatase
FR2787797B1 (en) 1998-12-23 2006-01-06 Rhodianyl PROCESS FOR PRODUCING POLYAMIDE
CA2392747A1 (en) 2000-01-20 2001-07-26 E.I. Du Pont De Nemours And Company Polyamide chain extension process and functionalized polyamides produced thereby
JP2003520876A (en) 2000-01-20 2003-07-08 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー Polyamide chain extension method and related polyamide products
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
GB1193435A (en) * 1966-07-13 1970-06-03 Ici Ltd Polyamides
FR1531145A (en) * 1966-07-13 1968-06-28 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
US4433116A (en) * 1981-07-06 1984-02-21 Allied Corporation Process for increasing the relative viscosity of polycaprolactam with phosphite compound
US4390667A (en) * 1981-07-06 1983-06-28 Allied Corporation Process for increasing the melt viscosity of polyamide with aryl phosphate compound

Also Published As

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

Similar Documents

Publication Publication Date Title
LTIP358A (en) Process for increasing the molecular weight of polyamides and nylon
GB8920238D0 (en) Polyamides
YU58190A (en) Aminoacid's derivatives
EP0352542A3 (en) Fastening apparatus
ZA948592B (en) 7H-imidazo[1,2-a]pyrazin-8-one derivatives,and their preparation and use
EP0345648A3 (en) Thermoplastically processable polyamides
GB2188936B (en) Aromatic polyamides and polybenoxazoles having diphenylhexafluoropropane units
GB8917093D0 (en) High molecular weight polyamides production
IL91715A0 (en) Nylon modified rubber composition
IL90515A0 (en) Benzazepine and bentothiazepine derivatives and processes for the preparation thereof
EP0525360A3 (en) Novel phenylacetamide derivatives and processes for the preparation thereof
GB2214146B (en) "conveyor trolley"
GB2214181B (en) Diamine compounds
JPS6443526A (en) Polyamide polyamines
NZ224920A (en) 1,2-diazoles, 3-phenoxy derivatives thereof and their use as herbicides
IL86028A0 (en) Novel pyrrolidine-2-(1,3-dicarbonyl)derivatives,their preparation,agents containing them,and their use
AR243912A1 (en) Process for increasing the molecular weight of a polyamide
GB8725744D0 (en) Dual-ovenable nylon container
EP0405239A3 (en) Highmolecular weight (co)polyamides and process for their preparation
AR244311A1 (en) Process for increasing the molecular weight of hydrocarbons and/or derivatives thereof
LV10468B (en) Process for increasing the molecular weight of a polyamide and nylon
CS630990A2 (en) Connection of steel -rope conveyer belt's two ends
GB8803242D0 (en) Artist's palette
LTIP357A (en) Process for increasing the molecular weight of polyamide
IE882192L (en) N-benzoyl-n'-thienyl-ureas

Legal Events

Date Code Title Description
MM9A Lapsed patents

Effective date: 19980225