公开(公告)号：EP0456018A1

公开(公告)日：1991-11-13

申请号：EP91106260.2

申请日：1991-04-18

Applicant: ELF ATOCHEM NORTH AMERICA, INC.

Inventor： Polek, Michael David

IPC: C09D5/03 ,  C09D127/12

CPC classification number: C09D127/12 ,  C08L27/12 ,  C08L33/06 ,  C09D133/06 ,  C08L2666/04

Abstract: A pigmented powder coating composition comprises:

(a) a resin component comprising (1) from about 50 wt.% to about 90 wt.% vinylidene fluoride/hexafluoropropylene copolymer resin having a melt viscosity of from about 1 to about 4 kilopoise measured at 100 sec⁻¹ and 232°C, and (2) from about 10 wt.% to about 50 wt.% of at least one thermoplastic acrylic resin, and
(b) a pigment component comprising from about 5 to about 30 parts of at least one pigment, per 100 parts by weight of the resin component.

The powder coating composition is prepared by pelletizing the mixture components, cryogenically grinding the pellets, and classifying the particles. The composition is applied to a substrate, and subjected to heat treatment to form a coating. The coatings prepared in this manner are characterized by improved flexibility, crack resistance and surface smoothness.

Abstract translation: 着色粉末涂料组合物包含：（a）树脂组分，其包含（1）约100重量％至约90重量％的偏二氟乙烯/六氟丙烯共聚物树脂，其在100℃下测量的熔体粘度为约1至约4千碱基 sec）和232℃，和（2）约10重量％至约50重量％的至少一种热塑性丙烯酸树脂，和（b）颜料组分，其包含约5至约30 至少一种颜料的部分，每100重量份的树脂组分。 粉末涂料组合物通过将混合物组分造粒，低温研磨颗粒并对颗粒进行分级来制备。 将组合物施加到基材上，并进行热处理以形成涂层。 以这种方式制备的涂层的特征在于改善的柔韧性，抗裂纹性和表面平滑性。

公开(公告)号：EP0456018B1

公开(公告)日：1993-06-16

申请号：EP91106260.2

申请日：1991-04-18

Applicant: ELF ATOCHEM NORTH AMERICA, INC.

Inventor： Polek, Michael David

IPC: C09D5/03 ,  C09D127/12

CPC classification number: C09D127/12 ,  C08L27/12 ,  C08L33/06 ,  C09D133/06 ,  C08L2666/04