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    1.
    发明专利
    未知

    公开(公告)号：DE2807494A1

    公开(公告)日：1978-09-14

    申请号：DE2807494

    申请日：1978-02-22

    Applicant: ASAHI CHEMICAL IND

    Inventor： NOGAMI SUMITAKA ,  MATSUMOTO YOSHIO ,  WAKI KEIICHI ,  OKADA TOORU ,  NOBEOKA MIYAZAKI

    IPC: C08G63/21 ,  C08G63/50 ,  C08G63/553 ,  C08G63/66 ,  C08G63/682 ,  C09D167/00 ,  C09D3/64 ,  C09D5/40

    Abstract: A novel polyester type powder coating composition which includes a specific self-hardening polyester of air-hardening type comprising as main ester-constituting monomer units, (1) at least one polycarboxylic acid component containing at least 10 mole %, based on the polycarboxylic acid component, of at least one aromatic polycarboxylic acid component (A) and (2) at least one polyhydric alcohol component, having in its main chain at least one terminal blocked with a monofunctional unsaturated alicyclic compound component (B) and having a softening point of 30 DEG to 150 DEG C. This composition is excellent in storage stability and adaptability to either thin coating or thick coating, and when it is applied onto an article to be coated and baked at a temperature of 170 DEG to 230 DEG C. for 5 to 30 minutes, a coating excellent in appearance, mechanical strength, gloss and reflection sharpness can be formed advantageously without generating undesired gases at the baking.

    POLYESTER TYPE POWDER COATING COMPOSITION
    2.
    发明专利
    POLYESTER TYPE POWDER COATING COMPOSITION 未知

    公开(公告)号：CA1094740A

    公开(公告)日：1981-01-27

    申请号：CA297640

    申请日：1978-02-23

    Applicant: ASAHI CHEMICAL IND

    Inventor： NOGAMI SUMITAKA ,  MATSUMOTO YOSHIO ,  WAKI KEIICHI ,  OKADA TOORU

    IPC: C08G63/21 ,  C08G63/50 ,  C08G63/553 ,  C08G63/66 ,  C08G63/682 ,  C09D167/00 ,  C09D3/68 ,  C08G63/52 ,  C08L67/06

    Abstract: A novel polyester type powder coating composition which includes a specific self-hardening polyester of air-hardening type comprising as main ester-constituting monomer units, (1) at least one polycarboxylic acid component containing at least 10 mole %, based on the polycarboxylic acid component, of at least one aromatic polycarboxylic acid component (A) and(2) at least one polyhydric alcohol component, having in its main chain at least one terminal blocked with a monofunctional unsaturated alicyclic compound component (B) and having a softening point of 30 to 150.degree.C. This composition is excellent in storage stability and adaptability to either thin coating or thick coating, and when it is applied onto an article to be coated and baked at a temperature of 170 to 230.degree.C. for 5 to 30 minutes, a coating excellent in appearance, mechanical strength, gloss and reflection sharpness can be formed advantageously without generating undesired gases at the baking.

    10.
    发明专利
    未知

    公开(公告)号：DE2626125A1

    公开(公告)日：1976-12-16

    申请号：DE2626125

    申请日：1976-06-11

    Applicant: ASAHI CHEMICAL IND

    Inventor： MATSUO SHUNJI ,  SASAGURI KIICHIRO ,  NAKAMURA KATSUYUKI ,  SATO MIKIO ,  FUJI SHIZUOKA ,  MATSUMOTO YOSHIO

    IPC: C09D5/03 ,  C08G59/32 ,  C08G59/62 ,  C09D5/46 ,  C09D125/14 ,  C09D133/06 ,  C09D133/20 ,  C09D3/80 ,  C09D3/58 ,  C09D5/40 ,  C09D5/42

    Abstract: A thermosetting powder coating composition having good handling characteristics and capable of being baked under relatively mild conditions and providing a coating having practically satisfactory properties. This coating composition is prepared by incorporating in 100 parts by weight of an epoxy group-containing acrylic or methacrylic copolymer having a glass transition point of 30 DEG to 90 DEG C. and a weight average molecular weight of 2,500 to 30,000, said copolymer consisting of 3 to 35% by weight of acrylate or methacrylate monomer units and 97 to 65% by weight of ethylenically unsaturated monomer units, 3 to 40 parts by weight of a specific diphenol having at its both terminals hydroxybenzoic acid ester structures as represented by the general formula: wherein R3 stands for a hydrocarbon radical having 2 to 20 carbon atoms or a linking group containing, at least at its both terminals, hydrocarbon radicals and in its main chain at least one member selected from the group consisting of an ether linkage, ester linkage, urethane linkage and amide linkage, and having totally 4 to 20 carbon atoms. Especially good results are obtained when a specific phenol compound containing in the molecule one phenolic hydroxyl group and either one carboxyl group or one hydroxyl group, or a specific benzoic acid compound containing in the molecule two carboxylic acid groups are further incorporated in this powder coating composition.

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