| 摘要 |
A coating composition for a food and/or beverage container comprising a polyester material, wherein the polyester material comprises the reaction product of a two step process, the two step process comprising: a first step comprising preparing a polyester prepolymer by contacting (a) 1,2-propanediol, (b) terephthalic acid, and a second step comprising contacting the polyester prepolymer with (c) a molecular weight increasing agent, characterised in that the polyester material has a number-average molecular weight (Mn) of at least 6,100 Da and a glass transition temperature (Tg) of at least 80° C. |
