| 摘要 |
Disclosed are aliphatic polyester resins containing specific molar quantities of 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and solvent borne, thermosetting monocoating compositions prepared therefrom. The aliphatic polyesters exhibit good hardness and flexibility when formulated into thermosetting coatings compositions. |
| 主权项 |
1. A curable, aliphatic polyester comprising residues of:
i. a hydroxyl component, said hydroxyl component comprising the residues of:
a. from 5 to 45 mole %, based on the total moles of (a) and (b), of 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD);b. from 55 to 95 mole % based on the total moles of (a) and (b), of a diol other than TACD; andc. from 3 to 35 mole %, based on the total moles of (a), (b) and (c), of a polyol; ii. a diacid component, said diacid component comprising the residues of:
d. from 60 to 90 mole %, based on the total moles of the diacids of an alicyclic diacid; ande. from 10 to 40 mole %, based on the total moles of the diacids an acyclic aliphatic diacid; wherein the curable polyester contains diacid residues in an amount of at least 90 mole % of aliphatic diacid residues, based on the total moles of all diacid residues in the curable polyester, and, wherein the curable polyester has a hydroxyl number of 50 to 450 mgKOH/g of polyester, an acid number of 0 to 80 mgKOH/g, and a number average molecular weight of 300 to 10,000 g/mole of polyester. |
