Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1997-02-19
1998-05-19
Cooney, Jr., John M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 56, 525 61, 525 62, 5253281, 5253282, 5253289, 5253297, 5253298, 5253302, 5253303, 5253304, 5253306, 526319, 526330, 526331, 528487, C08F 1606
Patent
active
057537534
ABSTRACT:
This invention relates to an improved process for producing a vinyl alcohol containing polymer having a narrow particle size without substantial reactor fouling. The process for producing the vinyl alcohol containing polymer involves hydrolyzing a vinyl ester containing polymer, e.g., a polymer containing polymerized vinyl alkanoate units in the presence of an alcoholic medium and a hydrolysis catalyst in the presence of an alcoholic medium having finely divided, inert material such as an alkali metal carbonate dispersed therein. The finely divided inert material acts as nucleating sites for the polyvinyl alcohol as it precipitates from the solution during hydrolysis.
REFERENCES:
patent: 3487061 (1969-12-01), Bristol
patent: 3510463 (1970-05-01), Bristol
patent: 3884892 (1975-05-01), Winkler et al.
patent: 4027079 (1977-05-01), McClain et al.
patent: 4200708 (1980-04-01), McClain
patent: 4208528 (1980-06-01), McClain
patent: 5187226 (1993-02-01), Kamachi et al.
patent: 5194492 (1993-03-01), Pinschmidt et al.
patent: 5300566 (1994-04-01), Pinschmidt et al.
Phung Kien Van
Sagl Dennis
Air Products and Chemicals Inc.
Brewer Russell L.
Cooney Jr. John M.
LandOfFree
Hydrolysis of polyvinyl aklaenoates does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrolysis of polyvinyl aklaenoates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrolysis of polyvinyl aklaenoates will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1853912