Process for converting vinyl alcohol polymers to poly(keto-ester

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525387, C08C 1904

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active

052199304

ABSTRACT:
Processes for converting vinyl alcohol polymers to poly(keto-esters) and the novel products obtained therefrom are disclosed. The process involves reacting a vinyl alcohol polymer, such as PVA or EVOH, with an organic peroxyacid oxidizing agent in an inert liquid medium at a temperature from -20.degree. C. to 150.degree. C. to convert the secondary hydroxyl groups of the vinyl alcohol polymer to carbonyl and oxycarbonyl groups. In another aspect of the invention, the vinyl alcohol copolymer is first reacted with an oxidizing agent capable of converting the secondary hydroxyl groups to carbonyl but not to oxycarbonyl and then subsequently oxidized using a peroxyacid to form oxycarbonyl. The poly(keto-esters) comprised of carbonyl units, oxycarbonyl units, hydroxyl-containing units and units which are primarily hydrocarbons in nature are photodegradable and biodegradable.

REFERENCES:
patent: 2557256 (1951-06-01), Brubaker et al.
patent: 2983759 (1961-05-01), Matsumoto et al.
patent: 3052662 (1952-09-01), Shiraishi et al.
patent: 3053605 (1962-09-01), Tanabe et al.
patent: 3095257 (1963-06-01), Tanabe et al.
patent: 3859269 (1975-01-01), Maurer
patent: 3976621 (1975-06-01), Palladino et al.
patent: 4154912 (1979-05-01), Philipp et al.
patent: 4249000 (1981-02-01), Batzer et al.
patent: 4304882 (1981-12-01), D'Angelo et al.
patent: 4456731 (1984-06-01), Caporossi et al.
patent: 4929711 (1990-05-01), Chang et al.
patent: 4957997 (1990-09-01), Chang et al.
patent: 5064932 (1991-11-01), Chang et al.
Abstract of 0261792; Jena, Republic of Dutch: Nov. 9, 1988.
Abstract of 0257014; Rezvika, USSR; Apr. 7, 1970.
Abstract of 1694831; Rhone-Poulence, Germany; May 24, 1973.
Abstract of 0028507; Ohgaki, Japan; Sep. 17, 1970.
Enzyclopedia of Polymer Science and Technology, vol. 14 (1971) pp. 169-174.
March, J.: Advanced Organic Chemistry, 3rd Edition, pp. 1057-1060.

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