公开(公告)号：US06479588B1

公开(公告)日：2002-11-12

申请号：US09641760

申请日：2000-08-21

Applicant: Szu-Ping Lu ,  Paul J. Prucnal ,  Hiram A. Norton

Inventor： Szu-Ping Lu ,  Paul J. Prucnal ,  Hiram A. Norton

IPC: C08F800

CPC classification number: C08F283/04 ,  C08F220/32

Abstract: A graft copolymer comprising a polyamide to which is grafted a glycidyl group-containing acrylate copolymer. The graft copolymer can be prepared by dispersing in an organic solvent a polyamide and a material which will react with the polyamide to form the graft copolymer of the polyamide and the acrylate copolymer and reacting the polyamide and the material so as to form said graft copolymer. The graft copolymer can exhibit improved toughness and reduced friability and can be used to form molded articles and in coating compositions, especially powder coating compositions. The coatings can exhibit transparency, reduced brittleness and increased chip resistance. The powder coatings can further exhibit high gloss and smoothness due to superior flow characteristics thereby enabling thinner coatings to be used that provide acceptable appearance.

Abstract translation: 包含接枝有含缩水甘油基的丙烯酸酯共聚物的聚酰胺的接枝共聚物。 接枝共聚物可以通过在有机溶剂中分散聚酰胺和与聚酰胺反应形成聚酰胺和丙烯酸酯共聚物的接枝共聚物并与聚酰胺和材料反应以形成所述接枝共聚物的材料来制备。 接枝共聚物可以显示出改进的韧性和脆性降低，并且可以用于形成模制品和涂料组合物，特别是粉末涂料组合物。 涂层可以显示透明度，降低的脆性和增加的芯片电阻。 由于优异的流动特性，粉末涂料可以进一步表现出高的光泽度和光滑度，从而可以使用提供可接受的外观的更薄的涂层。

公开(公告)号：US5744522A

公开(公告)日：1998-04-28

申请号：US713517

申请日：1996-09-13

Applicant: Paul J. Prucnal ,  Szu-Ping Lu

Inventor： Paul J. Prucnal ,  Szu-Ping Lu

IPC: C08G59/58 ,  C08F220/26 ,  C08G59/42 ,  C08L67/02 ,  C08L75/00 ,  C09D5/00 ,  C09D133/06 ,  C09D133/14 ,  C09D163/00 ,  C09D167/00 ,  C09D167/02 ,  C08L63/00 ,  C08F20/00

CPC classification number: C09D133/068 ,  C08G59/4238 ,  C09D167/02 ,  C08L67/02 ,  C08L75/00

Abstract: A low gloss coating composition having a 60.degree. gloss of less than about 60 which contains: a) a glycidyl group-containing acrylic copolymer; b) an aromatic polyester; and c) an isocyanurate curing agent having the formula: ##STR1## wherein R.sub.1 -R.sub.3 are independently selected from the group consisting of divalent alkylene groups of 1 to 18 carbon atoms and divalent groups of 3 to 21 carbon atoms and containing an ester linkage, and R.sub.4 -R.sub.6 are independently selected from the group consisting of H, organic salt groups, alkyl groups of 1 to 20 carbon atoms and C(O)R.sub.7 wherein R.sub.7 is an alkyl group of 1 to 22 carbon atoms.

Abstract translation: 具有小于约60°的60°光泽度的低光泽涂料组合物，其含有：a）含缩水甘油基的丙烯酸共聚物; b）芳族聚酯; 和c）具有下式的异氰脲酸酯固化剂：其中R 1 -R 3独立地选自1至18个碳原子的二价亚烷基和3至21个碳原子的二价基团并含有酯键， 和R 4 -R 6独立地选自H，有机盐基团，1-20个碳原子的烷基和C（O）R 7，其中R 7是1至22个碳原子的烷基。

公开(公告)号：US06670411B2

公开(公告)日：2003-12-30

申请号：US09968858

申请日：2001-10-03

Applicant: Szu-Ping Lu ,  Paul J. Prucnal

Inventor： Szu-Ping Lu ,  Paul J. Prucnal

IPC: C08J300

CPC classification number: C08K5/34926 ,  C08F6/003 ,  C08K5/3435 ,  C08L33/06

Abstract: A process for separating a solvent and low molecular weight material from an acrylic resin by adding a hindered amine light stabilizer having at least one aminoether group to a mixture of the organic solvent, low molecular weight material and the acrylic resin and subjecting the resulting mixture to an elevated temperature for a time sufficient to remove the solvent and low molecular weight material from the acrylic resin by devolatilization. A composition can be provided which is capable of being formed into a powder coating composition which essentially contains an acrylic resin, a hindered amine light stabilizer having at least one aminoether group or residue thereof and less than 4% by weight of low molecular weight material having a molecular weight less than 600.

Abstract translation: 通过向有机溶剂，低分子量材料和丙烯酸树脂的混合物中加入具有至少一个氨基醚基团的受阻胺光稳定剂，将溶剂和低分子量材料与丙烯酸树脂分离，并将所得混合物 升高温度足以通过脱挥发分从丙烯酸树脂中除去溶剂和低分子量材料。 可以提供一种组合物，其可以形成基本上含有丙烯酸树脂的粉末涂料组合物，具有至少一个氨基醚基团或其残基的受阻胺光稳定剂和小于4重量％的低分子量材料，其具有 分子量小于600。