公开(公告)号：US06586051B2

公开(公告)日：2003-07-01

申请号：US10131735

申请日：2002-04-24

申请人： Zhaolin Zhou ,  Rubin Cai

发明人： Zhaolin Zhou ,  Rubin Cai

IPC分类号： B05D302

CPC分类号： C08J7/047 ,  B29C37/0032 ,  B29K2075/00 ,  B29K2105/04 ,  B29K2995/002 ,  C08G18/38 ,  C08J5/00 ,  C08J2375/04 ,  C08J2475/00 ,  Y10T156/10 ,  Y10T428/31504 ,  Y10T428/31551 ,  Y10T428/31554

摘要： Improvements for in-mold polyurethane foam and/or resin products and the ability to provide surface coatings of such products exhibiting bright coloration and reduced colorant migration through utilization of easy-to-use polymeric colorants in simplified and environmentally friendly processing methods are disclosed. The inventive surface coating formulations include polyurethane-reactive polymeric colorants admixed with prepolymer and excess amounts of certain isocyanate compounds. Such a composition is applied (by spraying, for example) to a polyurethane prepolymer (for the production of the internal polyurethane article) which is then introduced within a mold in order to form a particularly shaped or configured polyurethane article with a colored surface coating. Upon curing through exposure to heat, the coating composition reacts with the introduced polyurethane prepolymer to form a surface over the target internal polyurethane. The excess isocyanate present within the surface coating has been found to provide surprisingly good non-migration and non-bleed properties to the polymeric colorant thereby permitting the addition of such a highly desired, high color space, and effective polyurethane colorant within such surface coatings. The specific method as well as colored polyurethane articles are also contemplated within this invention.

公开(公告)号：US06479561B1

公开(公告)日：2002-11-12

申请号：US09651327

申请日：2000-08-30

申请人： Zhaolin Zhou ,  Rubin Cai

发明人： Zhaolin Zhou ,  Rubin Cai

IPC分类号： C08G1800

CPC分类号： C08J7/047 ,  B29C37/0032 ,  B29K2075/00 ,  B29K2105/04 ,  B29K2995/002 ,  C08G18/38 ,  C08J5/00 ,  C08J2375/04 ,  C08J2475/00 ,  Y10T156/10 ,  Y10T428/31504 ,  Y10T428/31551 ,  Y10T428/31554

摘要： Improvements for in-mold polyurethane foam and/or resin products and the ability to provide surface coatings of such products exhibiting bright coloration and reduced colorant migration through utilization of easy-to-use polymeric colorants in simplified and environmentally friendly processing methods are disclosed. The inventive surface coating formulations include polyurethane-reactive polymeric colorants admixed with prepolymer and excess amounts of certain isocyanate compounds. Such a composition is applied (by spraying, for example) to a polyurethane prepolymer (for the production of the internal polyurethane article) which is then introduced within a mold in order to form a particularly shaped or configured polyurethane article with a colored surface coating. Upon curing through exposure to heat, the coating composition reacts with the introduced polyurethane prepolymer to form a surface over the target internal polyurethane. The excess isocyanate present within the surface coating has been found to provide surprisingly good non-migration and non-bleed properties to the polymeric colorant thereby permitting the addition of such a highly desired, high color space, and effective polyurethane colorant within such surface coatings. The specific method as well as colored polyurethane articles are also contemplated within this invention.