Liquid cellulose ester adhesives
AssigneeCelanese Acetate LLC
InventorsMichael Combs, Lizbeth Milward
Life of this patent
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Abstract
Liquid adhesives may be produced that include plasticized cellulose esters, plasticized starch ester, or both. For example, an adhesive may include a cellulose ester, a starch ester, or both at about 1% to about 30% by weight of the adhesive; and a plasticizer, wherein the adhesive has a dynamic viscosity of about 100 Pa·s or less at 25° C. and a shear rate of 40 s−1. In some instances, the plasticizer may be at about 20% to about 97% by weight of the adhesive, about 40% to about 97% by weight of the adhesive, or about 80% to about 97% by weight of the adhesive. In some instances, the adhesive may consist essentially of (1) the plasticizer and (2) the cellulose ester, the starch ester, or both.
Claims20
An adhesive comprising:
- a cellulose ester, a starch ester, or both at about 1% to about 30% by weight of the adhesive;
- and
- a plasticizer,
- wherein the adhesive has a dynamic viscosity of about 100 Pa·s or less at 25° C. and a shear rate of 40 s−1.
A method comprising:
- applying an adhesive to a first surface moving at a speed of about 1 m/min to about 800 m/min, the adhesive comprising a plasticizer and a cellulose ester, a starch ester, or both with the cellulose ester, the starch ester, or both at about 1% to about 30% by weight of the adhesive, and wherein the adhesive has a dynamic viscosity of about 100 Pa·s or less at 25° C. and a shear rate of 40 s−1, and
- adhering a second surface to the first surface with the adhesive.
Dependencies are inferred from the claim text.