Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1986-06-12
1987-06-23
Jacobs, Lewis T.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524440, 524441, 524547, C08K 308
Patent
active
046753583
ABSTRACT:
The invention provides an aqueous coating composition which comprises a film forming polymer and a particulate metallic pigment characterized in that the composition contains as corrosion inhibition agent for the pigment a phosphatic material containing at least one acidic hydroxyl group or a salt thereof linked to a phosphorus atom and which has been obtained by the co-reaction of (i) an addition polymer carrying a functional hydroxyl group, (ii) a monohydric alcohol or phenol and (iii) a compound containing in the molecule the grouping: ##STR1## or a compound equivalent in structure to such a grouping. Preferably, where the reactant (i) and/or (ii) contains a material having a terminal alkyl group containing more than 6 carbon atoms such a material provides less than 25% by weight of the combined weights of the reactants (i) and (ii), since we have found that the presence of such long chain terminal groups impairs the inter coat adhesion between a base coat of the composition of the invention and a subsequently applied translucent top coat.
REFERENCES:
patent: 3055865 (1962-09-01), Craig
patent: 3207611 (1965-09-01), Ebren
patent: 3215715 (1965-11-01), Wurstner
patent: 3276916 (1966-10-01), Wurstner
patent: 3411923 (1968-11-01), Bretz
patent: 4403003 (1983-09-01), Backhouse
patent: 4484951 (1984-11-01), Uehimura
Imperial Chemical Industries plc
Jacobs Lewis T.
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