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US 9,868,876 B2Granted
Coating composition
AssigneeImerys Minerals Limited
InventorsGareth Pratt, Peter Biza
Life of this patent
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Abstract
A coating composition comprising a polymer, such as a copolymer comprising alkylene monomers and unsaturated acid monomers, and at least one phyllosilicate, a product coated with said composition, a method of making said coating compositions and a method of making said coated products.
Claims20
A coating composition comprising:
- a copolymer comprising alkylene monomers and unsaturated acid monomers;
- and
- at least one phyllosilicate having a shape factor equal to or greater than about 40,
- wherein at least 30% of the acid groups on the copolymer are neutralized.
1 more element
A coating composition comprising:
- a polymer;
- and
- at least one phyllosilicate having a shape factor equal to or greater than about 40;
- wherein the moisture vapour transmission rate (MVTR) of the coating composition is less than about 150 gsm/day, for example less than about 100 gsm/day, when measured according to TAPPI T464 at 37.8° C. and 90% relative humidity, using an about 13 gsm coatweight of the coating composition, and wherein at least 30% of the acid groups on the copolymer are neutralized.
1 more element
Dependencies are inferred from the claim text.