Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/153,239external-prioritypatent/US6428844B1/en
Application filed by Rohm & HaasfiledCriticalRohm & Haas
Application grantedgrantedCritical
Publication of TW343986BpublicationCriticalpatent/TW343986B/en
Processes Of Treating Macromolecular Substances
(AREA)
Application Of Or Painting With Fluid Materials
(AREA)
Abstract
A method for reducing the amount of microfoam in a spray-applied waterborne polymeric composition comprising spraying the composition using a gas having a solubility factor greater than 35, thereby reducing the amount of microfoam in the dried composition; in which the solubility factor is defined as: solubility factor of a gas = (Solubility of the gas in water)/(solubility of nitrogen in water) the solubility is measured at 25℃, at 1 atmosphere gas pressure, in which the gas is selected from the group consisting of dinitrogen monoxide and carbon dioxide; and in which the polymer in the waterborne polymeric composition is prepared by the addition polymerization of at least one monomer selected from the group consisting of esters of (meth)acrylic acid, vinyl esters, styrene and butadiene, and the viscosity of the waterborne polymeric composition is from 50 to 10,000 centipoises.
TW083102030A1993-11-151994-03-09Reduction of microfoam in a spray-applied waterborne composition
TW343986B
(en)
Regio-regular copolymer having a linear hydrocarbon polymer backbone with vicinal functional groups containing oxygen or nitrogen pendent from the backbone