GB1532603A - Melt polymerization of epsilon caprolactam - Google Patents

Melt polymerization of epsilon caprolactam

Info

Publication number
GB1532603A
GB1532603A GB2816477A GB2816477A GB1532603A GB 1532603 A GB1532603 A GB 1532603A GB 2816477 A GB2816477 A GB 2816477A GB 2816477 A GB2816477 A GB 2816477A GB 1532603 A GB1532603 A GB 1532603A
Authority
GB
United Kingdom
Prior art keywords
melt polymerization
hydrolytic
july
per cent
less
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
GB2816477A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1532603A publication Critical patent/GB1532603A/en
Expired legal-status Critical Current

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
    • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
    • C08G69/14—Lactams
    • C08G69/16—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)

Abstract

1532603 Hydrolytic polycaprolactam DOW CHEMICAL CO 5 July 1977 [6 July 1976 26 Oct 1976] 28164/77 Heading C3N The hydrolytic melt polymerization of caprolactam is effected under pressure at 180 to 300‹ C. in the presence of 0-6 to 5 mol per cent of a primary secondary amine which does not boil at or below 245‹ C., and when most of the polymerization is complete, venting the system and placing it under inert gas or vacuum till the methanol extractables in the product have been reduced to less than 5 wt. per cent. The products have good heat stability, low extractable content, less than 30 meq./Kg. COOH ends, a R.V. of 1À7 to 3 (1 g./182À5 g. 96% H 2 SO 4 at 25‹ C.), and high affinity for acid dyes.
GB2816477A 1976-07-06 1977-07-05 Melt polymerization of epsilon caprolactam Expired GB1532603A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US70281276A 1976-07-06 1976-07-06
US73548276A 1976-10-26 1976-10-26

Publications (1)

Publication Number Publication Date
GB1532603A true GB1532603A (en) 1978-11-15

Family

ID=27107026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2816477A Expired GB1532603A (en) 1976-07-06 1977-07-05 Melt polymerization of epsilon caprolactam

Country Status (6)

Country Link
JP (1) JPS536398A (en)
DE (1) DE2730248A1 (en)
FR (1) FR2357594A1 (en)
GB (1) GB1532603A (en)
IT (1) IT1079744B (en)
NL (1) NL7707419A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366306A (en) 1980-02-01 1982-12-28 The Dow Chemical Company Melt polymerization of ε-caprolactam
US9296876B2 (en) 2011-04-13 2016-03-29 Rhodia Operations Stabilized polyamide compositions

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6227128A (en) * 1985-07-26 1987-02-05 Toyobo Co Ltd Manufacture of polycoupleamide series film
JPS6227130A (en) * 1985-07-26 1987-02-05 Toyobo Co Ltd Manufacture of polyamide film
JPS6227129A (en) * 1985-07-26 1987-02-05 Toyobo Co Ltd Manufacture of polycoupleamide series film
JPS62104730A (en) * 1985-10-31 1987-05-15 Toyobo Co Ltd Manufacture of polycapramide-based film
JPH0657390B2 (en) * 1988-05-27 1994-08-03 厚地鉄工株式会社 Nozzle swing device for sandblasting machine
JPH0653349B2 (en) * 1988-05-27 1994-07-20 厚地鉄工株式会社 Rocking sandblasting machine
US4891420A (en) * 1988-06-30 1990-01-02 Basf Aktiengesellschaft Continuous process for the hydrolytic production of polycaprolactam by tempering unextracted granular polymer material with moist inert gas

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241322A (en) * 1938-09-30 1941-05-06 Du Pont Process for preparing polyamides from cyclic amides
US3555114A (en) * 1968-10-11 1971-01-12 Allied Chem Polycaprolactam polymerized with diethanolamine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366306A (en) 1980-02-01 1982-12-28 The Dow Chemical Company Melt polymerization of ε-caprolactam
US9296876B2 (en) 2011-04-13 2016-03-29 Rhodia Operations Stabilized polyamide compositions

Also Published As

Publication number Publication date
FR2357594A1 (en) 1978-02-03
NL7707419A (en) 1978-01-10
JPS536398A (en) 1978-01-20
FR2357594B1 (en) 1979-03-23
DE2730248A1 (en) 1978-01-19
IT1079744B (en) 1985-05-13

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee