3 results about "Surface spreading" patented technology

To provide a polymer useful as a surface leveling agent, a method for producing the same, and an article comprising the same.SOLUTION: Disclosed herein is a copolymer comprising first polymerized units of formula (1) [R1 is H or a C1-C6 alkyl group and R2 is a C3-C20 alkyl group that optionally includes one or more of -O-, -S-, -N-, -C(O)-, -C(O)O-, -N-C(O)-, and -C(O)-NR-] and second polymerized units of formula (2) [R3 is a substituted or unsubstituted C1-C6 alkyl group that optionally includes one or more of -O-, -N-, -S-, -C(O)-, and -C(O)O-, wherein the first polymerized units and the second polymerized units are chemically different, and the copolymer is free of fluorine.SELECTED DRAWING: None

A reel compartment cover for preventing trapping of an object includes a plurality of offset, vertically interconnected surfaces with a center opening positioned above and below each other in a larger circular or semicircular opening; wherein the interconnected surfaces spread apart when the object is inserted through the center opening; wherein the interconnected surfaces are constructed from a flexible material that returns to original shape when the object passes through or is removed from the center opening; and wherein the opening formed by the interconnected surfaces is as large as the diameter of the circular or semicircular opening.