Adhesive compositions with polyesters comprising 2,2,4,4-tetraalkyl-1,3-cyclobutanediol
AssigneeEastman Chemical (China) Co., Ltd.
InventorsKe Feng, Rui Xie, Austin Neal Britton, Sarah Exley Goetz, Thauming Kuo, Wentao Li, Timothy Glenn Williams
Life of this patent
Estimating the term…
Abstract
This invention relates to adhesive compositions comprising a polyester polyol that includes residues of at least one 2, 2, 4, 4-tetraalkylcyclobutane-1, 3-diol, including, for example, 2, 2, 4, 4-tetramethylcyclobutane-1, 3-diol (TMCD). Adhesive compositions as described herein exhibit enhanced properties as compared to conventional adhesive compositions, and may be suitable for a wide variety of end use applications, including, flexible packaging, woodworking, automotive uses, and electronics.
Claims20
An adhesive composition comprising—
- (a) a polyester polyol comprising a diol component having residues of 2,2,4,4-tetraalkyl-1,3-butanediol (TACD);
- and
- (b) at least one isocyanate,
- wherein said adhesive composition exhibits at least one of the following properties (i) through (v)—
- (i) an offline bond strength of 100 to 1000 g/in;
- (ii) 24-hour bond strength of 200 to 3000 g/in;
- (iii) chemical resistance of 200 to 1000 g/in after boil in bag with 1:1:1 food simulant;
- (iv) thermal resistance of 200 to 800 g/in at 90° C.;
- and
- (v) time to achieve substrate failure of ≤24 hours.
An adhesive composition comprising—
- (a) a prepolymer having isocyanate functionality comprising the reaction product of—
- (i) a polyester polyol comprising the residues of
- (A) 2,2,4,4-tetraalkylcyclobutane-1,3-diol in an amount of about 5 to about 95 mole %, based on the total moles of the diols,
- (B) at least one diol other than 2,2,4,4-tetraalkylcyclobutane-1,3-diol in an amount of about 5 to 95 mole % based on the total moles of the diols, (A) and (B) equaling 100 mole %, and
- (C) a dicarboxyl compound, and
- (ii) a difunctional isocyanate, and
- (b) water or a compound having one or more functional groups selected from hydroxyl, amino, ketoacetate, and carbamate.
A laminated article comprising:
- a first layer presenting a first surface;
- a second layer presenting a second surface;
- and
- an adhesive layer disposed between and at least partially in contact with at least one of said first and said second surfaces,
- wherein said adhesive layer is formed from an adhesive composition comprising a polyurethane polymer or prepolymer comprising (i) residues of a polyester polyol having a diol component having residues of 2,2,4,4-tetraalkyl-1,3-butanediol (TACD);
- and (ii) at least one isocyanate.
Dependencies are inferred from the claim text.