Inert rosin esters and process for preparing the same

Details Inert rosin esters and process for preparing the same Inert rosin esters and process for preparing the same

C - Chemistry, Metallurgy

09

F

260/126

C09F 1/04 (2006.01)

Patent

CA 1199631

INERT ROSIN ESTERS AND PROCESS FOR PREPARING THE SAME ABSTRACT OF THE DISCLOSURE Inert esters of rosin and a primary polyhydric alcohol, such as rosin-pentaerythritol esters, are modi- fied by reacting commercially available rosin esters which contain residual hydroxyl groups with a lower aliphatic carboxylic acid or anhydride, for example, acetic anhydride or propionic anhydride, to substantially completely es- terify the residual hydroxyl groups. The resulting inert, completely esterified rosin esters, when formulated with non polar natural rubber or SBR in adhesive systems, re- sults in a time-stable tack value not available with con- ventional rosin esters.

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