IN171914B - - Google Patents

Info

Publication number
IN171914B
IN171914B IN374/CAL/89A IN374CA1989A IN171914B IN 171914 B IN171914 B IN 171914B IN 374CA1989 A IN374CA1989 A IN 374CA1989A IN 171914 B IN171914 B IN 171914B
Authority
IN
India
Application number
IN374/CAL/89A
Other languages
English (en)
Inventor
Suriyanarayanan Dorai
Richard Edward Ernst
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 IN171914B publication Critical patent/IN171914B/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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
    • C08G65/46—Post-polymerisation treatment, e.g. recovery, purification, drying
    • 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying
    • 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
    • C08G65/06—Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
    • C08G65/16—Cyclic ethers having four or more ring atoms
    • C08G65/20—Tetrahydrofuran

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyethers (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
IN374/CAL/89A 1988-05-19 1989-03-08 IN171914B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19591188A 1988-05-19 1988-05-19

Publications (1)

Publication Number Publication Date
IN171914B true IN171914B (sv) 1993-02-06

Family

ID=22723325

Family Applications (1)

Application Number Title Priority Date Filing Date
IN374/CAL/89A IN171914B (sv) 1988-05-19 1989-03-08

Country Status (6)

Country Link
EP (1) EP0342862A3 (sv)
JP (1) JPH0218417A (sv)
KR (1) KR890017284A (sv)
CN (1) CN1037716A (sv)
BR (1) BR8902296A (sv)
IN (1) IN171914B (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5393866A (en) * 1992-11-11 1995-02-28 Mitsubishi Kasei Corporation Method for the production of polytetramethylene ether glycol
CN1095880C (zh) * 1998-02-07 2002-12-11 杨妙清 激光淬火前处理常温磷化工艺

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751419A (en) * 1954-09-13 1956-06-19 Du Pont Process for purification of polytetramethyleneether
US3358042A (en) * 1963-09-20 1967-12-12 Quaker Oats Co Process for recovering polytetramethylene ether glycol
US4391970A (en) * 1982-05-06 1983-07-05 The B. F. Goodrich Company Process for preparing colorless hydroxyl epihalohydrin polymers
US4544774A (en) * 1984-12-05 1985-10-01 E. I. Du Pont De Nemours And Company Process for reducing color in poly(tetramethylene ether) glycol

Also Published As

Publication number Publication date
KR890017284A (ko) 1989-12-15
EP0342862A3 (en) 1990-03-21
EP0342862A2 (en) 1989-11-23
CN1037716A (zh) 1989-12-06
JPH0218417A (ja) 1990-01-22
BR8902296A (pt) 1990-01-09

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