04576850 is referenced by 409 patents and cites 10 patents.

An article comprising a shaped, plastic layer or body comprising crosslinked polymer with hard and soft segments or moieties and having a microstructure-bearing surface is prepared by a process comprising filling a mold master, bearing or encoded with the microstructure to be replicated, with a fluid, castable, one-part, preferably solvent-free, radiation addition-polymerizable, crosslinkable, synthetic, organic oligomeric composition (or precursors thereof) having "hard" segments and "soft" segments, exposing the resulting cast composition to radiation, preferably actinic radiation such as ultraviolet radiation, and thereby forming said article, e.g., a retroreflective cube-corner sheeting, Fresnel lens or video disc.

Title
Shaped plastic articles having replicated microstructure surfaces
Application Number
5/926325
Publication Number
4576850
Application Date
July 20, 1978
Publication Date
March 18, 1986
Inventor
John A Martens
White Bear Lake
MN, US
Agent
William G Ewert
James A Smith
Donald M Sell
Assignee
Minnesota Mining and Manufacturing Company
MN, US
IPC
C08G 77/04
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