.~.~ Next to second aldehyde or ketone condensation product
DEFINITION
Classification: 428/525
(under subclass 524) Product in which adjacent layers, each comprising an aldehyde or ketone condensation product, are disclosed to differ in some aspect.
(1) Note. The two layers may contain different condensation products, or the same condensation product with different additives or physical properties.
(2) Note. Two identical layers of an aldehyde or ketone condensation product directly cohered to each other, but with an interface which is detectable, are nor considered to differ. Thus, a patent claiming such a laminate will be placed in subclass 524. Such layers may cohere through, e.g., molecular attraction or static electricity.
SEE OR SEARCH THIS CLASS, SUBCLASS:
212+, for layers or components having the same physical characteristic in differing degree.
524, for plural layers of an aldehyde or ketone condensation product, identical in composition and physical properties, which are directly cohered to each other; and see (2) Note above.
