B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/103
B29D 11/00 (2006.01)
Patent
CA 1155617
SHAPED PLASTIC ARTICLES HAVING REPLICATED MICROSTRUCTURE SURFACES This is a division of Serial No. 926,325 filed July 20, 1976. Abstract of the Disclosure 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" polysiloxane segments, exposing the resulting cast composition to radiation, prefereably actinic radiation such as ultraviolet radiation, and thereby forming said article, e.g., a retroreflective cube-corner sheeting, Fresnel lens or video disc.
393562
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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