US PATENT SUBCLASS 106 / 162.72
.~.~.~.~ Diverse cellulose ester or salt thereof (i.e., mixture of two or more cellulose esters or salts of diverse acids or mixture of two or more cellulose mixed esters or salts of different diverse acids groups)

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
162.1  DF  .~ Carbohydrate or derivative containing {15}
162.7  DF  .~.~ With cellulose ester or salt thereof (i.e., mixture of (A) a cellulose ester or salt thereof and (B) a carbohydrate material which is other than cellulose ester or salt of the same acid as in (A) differing only in the degree of esterification) {1}
162.71  DF  .~.~.~ The carbohydrate is a cellulose material {1}
162.72.~.~.~.~ Diverse cellulose ester or salt thereof (i.e., mixture of two or more cellulose esters or salts of diverse acids or mixture of two or more cellulose mixed esters or salts of different diverse acids groups)

DEFINITION

Classification: 106/162.72

Diverse cellulose ester or salt thereof (i.e., mixture of two or more cellulose esters or salts of diverse acids or mixture of two or more cellulose mixed esters or salts of different diverse acids groups):

(under subclass 162.71) Compositions which contain (A) mixture of two or more cellulose esters or salts thereof whereby at least one cellulose ester or salt has a diverse acid group or (B) mixture of two or more mixed cellulose esters or salts thereof whereby at least one mixed cellulose ester or salt has a diverse mixed acids group.

(1) Note. Cellulose ester is a product of a reaction of a hydroxyl group of cellulose with an acid. The esterifying acid may be organic or inorganic.

(2) Note. This subclass provides for compositions containing two or more different cellulose esters (e.g., cellulose nitrate and cellulose acetate, cellulose propionate and cellulose acetate, cellulose propionate and cellulose propionate isobutyrate, etc.).

SEE OR SEARCH THIS CLASS, SUBCLASS:

168.01+, for compositions containing cellulose mixed esters or mixture of cellulose esters of the same acid different only in the degree of esterification (e.g., cellulose acetate propionate, cellulose propionate and cellulose tripropionate, etc.).

171.1, for compositions containing mixture of cellulose acetate of differing degree of esterification (e.g., cellulose acetate and cellulose triacetate, etc.).