Synthesis of tetrahydrofuran polymers using calcined silica-alum

Details Synthesis of tetrahydrofuran polymers using calcined silica-alum Synthesis of tetrahydrofuran polymers using calcined silica-alum

1992-05-18

1993-05-11

Prescott, Arthur C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

568617, 264 60, 502 56, 502 81, C07C 4138

Patent

active

052102831

ABSTRACT:
Tetrahydrofuran is polymerized in the presence of a carboxylic acid anhydride and a solid acid catalyst that has been calcined at a temperature greater than about 600.degree. C. Calcined bleaching earth catalysts give THF polymer products having a narrow molecular weight distribution; calcining amorphous silica-aluminas improves their activity toward THF polymerization.

REFERENCES:
patent: 3433829 (1969-03-01), Dorfelt
patent: 3478109 (1969-11-01), McConnell
patent: 4189566 (1980-02-01), Mueller et al.
patent: 4228272 (1980-10-01), Del Pesco
patent: 4230892 (1980-10-01), Pruckmayr
patent: 4235751 (1980-11-01), Del Pesco
patent: 4243799 (1981-01-01), Mueller et al.
patent: 4303782 (1981-12-01), McHale et al.
patent: 4329445 (1982-05-01), Del Pesco
patent: 4363924 (1982-12-01), Mueller et al.
patent: 4510333 (1985-04-01), Pruckmayr
patent: 4564671 (1986-01-01), Mueller
patent: 4670519 (1987-06-01), Mueller
patent: 4728722 (1988-03-01), Mueller
patent: 4762951 (1988-08-01), Mueller
patent: 4803299 (1989-02-01), Mueller
patent: 4933503 (1990-06-01), Mueller
patent: 5053553 (1991-10-01), Dorai

Affiliated with

Also associated with

Rating

Synthesis of tetrahydrofuran polymers using calcined silica-alum does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synthesis of tetrahydrofuran polymers using calcined silica-alum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synthesis of tetrahydrofuran polymers using calcined silica-alum will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1351826