公开(公告)号：MY111202A

公开(公告)日：1999-09-30

申请号：MYPI19940349

申请日：1994-02-16

Applicant: THE GLIDDEN COMPANY

Inventor： GARY PIERCE CRAUN ,  GEORGE STEPHEN ROSEKELLY ,  FREDERICK LOUIS FLOYD

IPC: C09D135/04 ,  C09D7/12 ,  C09D131/04 ,  C09D133/08

Abstract: AN AQUEOUS AMBIENT DRY PAINT COATING BASED ON AN ADDITION COPOLYMER MATRIX POLYMER CONTAINING AN OLIGOMER FROM A POLYURETHANE OR A POLYESTER HAVING A TG BELOW -20?C AND A NUMBER AVERAGE MOLECULAR WEIGHT BETWEEN 200 AND 20,000, WHERE THE COATING IS FREE OF ORGANIC COALESCING SOLVENTS. THE MATRIX POLYMER COMPRISES EMULSION COPOLYMERIZED ETHYLENIC MONOMERS. IN A PREFERRED PROCESS, THE OLIGOMER IS PRODUCED BY FORMING AN AQUEOUS MOCRO-PREEMULSION OF OLIGOMER IN WATER BY HIGH SHEAR MIXING OF OLIGOMER AND WATER CONTAINING 40TO 70BY WEIGHT OLIGOMER AND AT TEMPERATURES BETWEEN 20?C AND 100?C TO PROVIDE AN AQUEOUS PRE-EMULSION HAVING AN ORGANIC PHASE DROPLET SIZE LESS THAN 10 MICRONS. THE POLYMERIC BINDER CAN BE PRODUCED ALSO BY MIXING THE OLIGOMER WITH THE ETHYLENIC MONOMERS TO FORM AN ORGANIC MIXTURE OF MONOMER AND OLIGOMER, PROVIDING AN AQUEOUS MICRO DISPERSION OF THE ORGANIC MIXTURE PHASE DROPLET SIZE LESS THAN 5 MICRONS, AND COPOLYMERIZING THE MONOMER TO PRODUCE A VINYL ACETATE POLYMER CONTAINING OLIGOMER. THE POLYMERIC BINDER SYSTEM IS FREE OF COALESCING ORGANIC SOLVENT.