Adhesive blends

Claim 1

Composition comprising a blend of about 5-95% by weight of a copolyester selected from (a), (b), or mixtures thereof with about 95-5% by weight of (c) which are defined as follows: (a) a crystallizable copolyester having a melting point of about 100°-190° C. a heat of fusion of less than 10 calories per gram and an I.V. of about 0.4-1.6, the copolyester being derived from an acid component of at least 50 mole % terephthalic acid and a glycol component selected from the roup consisting of 1,4-butanediol, 1,6-hexanediol and combinations thereof, the copolyester also being derived from about 20-50 mole % of a co-acid or about 20-60 mole % of a co-glycol, or about 20-75 mole % of a combination of a co-acid and a co-glycol, the co-acid and co-glycol being selected from the group consisting of isophthalic acid, C 3 -C 12 aliphatic dibasic acids, aliphatic and cycloaliphatic glycols having 2-8 carbon atoms and diethylene glycol, the total of the acid component and the glycol component each being 100 mole %; (b) a substantially amorphous copolyester having a glass transition temperature of 50° C. or higher, a heat of fusion of less than 1 calorie per gram and an I.V. of about 0.4-1.2, the copolyesters being derived from at least one acid selected from the group consisting of terephthalic acid, isophthalic acid, and 1,4-cyclohexanedecarboxylic acid, and at least one glycol selected from the group consisting of ethylene glycol, diethylene gglycol, and 1,4-cyclohexanedimethanol, with the proviso that the copolyester contains at least two acids or at least two glycols, the second acid or glycol being present in an amount of about 25-60 mole %; and (c) a highly crystalline aliphatic homo- or copolyester having a melting point of about 40°-90° C. an I.V. of about 0.4-1.5 and a heat of fusion of greater than 10 cal/g., said homo- or copolyester essentially being derived from at least one aliphatic dibasic acid having 4 to 12 carbon atoms and at least one aliphatic glycol having 2 to 8 carbon atoms.