Thermosetting polyester coating composition containing tetramethylcyclobutanediol

Thermosetting polyester coating composition containing tetramethylcyclobutanediol

  • CN 102,307,961 B
  • Filed: 01/27/2010
  • Issued: 08/03/2016
  • Est. Priority Date: 02/06/2009
  • Status: Active Grant
First Claim
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1. a thermosetting coating compositions, it comprises:

  • (A) at least one curable polyester of .50-90 weight %, based on (A) and the gross weight of (B);

    This curable polyester is made up of following component;

    I. diacid residues, it comprises the isophthalic acid residues of 20-100mol%, total mole number based on this diacid residues;

    Ii. diol residue, it comprises the TMCBD residue of 10-100mol%, total mole number based on this diol residue;

    WithAt least one polyhydric alcohol residue of iii.2-40mol%, based on glycol and the total mole number of polyhydric alcohol residue;

    The number-average molecular weight of wherein said curable polyester is 500-10000 dalton, and glass transition temperature is-35 DEG C to 50 DEG C, and hydroxyl value is 20-300mgKOH/g polyester, and acid number is 0-80mgKOH/g polyester;

    (B) cross-linking agent of .10-50 weight %, based on (A) and the gross weight of (B), this cross-linking agent comprises at least one and carboxylic acid or the compound of hydroxyl reactive;

    With(C) at least one nonaqueous solvent of .10-60 weight %, based on (A), (B) and the gross weight of (C).

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