Novel carbohydrate esters and polyol esters as plasticizers for polymers, compositions and articles including such plasticizers and methods of using the same
AssigneeEastman Chemical Company
InventorsCharles M. Buchanan, Norma L. Buchanan, Kevin J. Edgar, Juanelle L. Lambert
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Abstract
The invention relates to methods of making carbohydrate and polyol esters suitable for use as plasticizers for polymer compositions. The invention also relates to plasticized polymer compositions comprising such carbohydrate and polyol esters. The invention also relates to articles prepared from such plasticized polymer compositions. The invention further relates to methods of using these compositions.
Claims41
1) A composition comprising:
- a) A plasticizer comprising one or more of:
- i) from about 5 to about 95 wt. % of a C2-C12 carbohydrate organic ester, wherein the carbohydrate comprises from about 1 to about 3 monosaccharide units;
- and
- ii) from about 5 to about 95 wt. % of a C2-C12 polyol ester, wherein the polyol is derived from a C5 or C6 carbohydrate, and
- b) from about 5 to about 95 wt. % of a C2-C10 ester of cellulose having a DS of from about 0.7 to about 3.0;
- wherein the percentages are based on the weight of component (A) plus component (B),
- provided, however, when a)ii) is present so as to provide a cellulose ester/polyol ester binary blend, the polyol ester does not comprise a polyol acetate.
29) A composition comprising:
- a) from about 5 to about 95 wt. % of a polymer comprising:
- i) polylactic acid;
- or
- ii) polyvinyl chloride;
- and
- b) a plasticizer, wherein the plasticizer comprises one or more of
- i) from about 5 to about 95 wt. % of a C2-C12 carbohydrate ester;
- or
- ii) from about 5 to about 95 wt. % of a C2-C12 polyol ester, wherein the polyol is derived from a C5 or C6 carbohydrate;
- wherein the percentages are based on the weight of component (A) plus component (B).
33) A plasticizer composition comprising one or more of the following:
- a) a C3-C12 ester of glucose, mannose, galactose, xylose, arabinose, lactose or cellobiose;
- b) a C2-C12 ester of mannose, galactose, xylose, arabinose, lactose or cellobiose;
- and
- c) a C3-C12 ester of sorbitol, mannitol, galactitol or arabinitol,
- wherein the composition is suitable for plasticizing one or more of cellulose ester, polyvinyl chloride and polylactic acid.
34) A method of plasticizing a polymer composition comprising:
- a) introducing a plasticizer into a polymer composition, wherein the plasticizer comprises one or more of
- i) a C2-C12 carbohydrate ester;
- or
- ii) a C3-C12 polyol ester, wherein the polyol is derived from a C5 or C6 carbohydrate;
- and
- b) mixing the plasticizer with the polymer composition.
Dependencies are inferred from the claim text.