| 摘要 |
<p>Low-molecular weight addition copolymers of (1) (meth) acrylic acid esters of alcohols such as methanol and butanol with (2) (meth) acrylic acid esters of alcohols such as N-( beta -hydroxyethyl)oxazolidine, optionally including (3) alpha , beta -ethylenically-unsaturated monomers such as (meth)acrylic acid, (where in each instance "(meth)acrylic" means acrylic or methacrylic or both) are used as dispersants for inorganic and organic pigments and colourants which are insoluble in organic solvents, for lacquers. These pigment dispersants are compatible with practically all types of lacquer resins, such as vinyls, nitrocellulose and alkyds, and also with many other types of lacquer film-forming materials. Usually, when small amounts of unsaturated carboxylic acids, or other polar monomers and combinations thereof, are incorporated in the polymers, they become improved pigment dispersants. Such pigment dispersions, unexpectedly, can be let down with many types of synthetic resins and used by air-drying or baking the coated articles. Lacquers for metals, paints and printing inks are examples of uses for such blends. </p> |
