Shaped plastic articles having replicated microstructure surface

Details Shaped plastic articles having replicated microstructure surface Shaped plastic articles having replicated microstructure surface

1978-07-20

1986-03-18

Kittle, John E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

156272, 264 11, 264 22, 427 44, 528 28, 522 1, C08G 7704

Patent

active

045768501

ABSTRACT:
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.

REFERENCES:
patent: 4022855 (1977-05-01), Hamblen
patent: 4116786 (1978-09-01), Hodakowski
patent: 4125678 (1978-11-01), Stvan et al.
patent: 4126726 (1978-11-01), Soeding
patent: 4130708 (1978-12-01), Friedlander et al.
patent: 4157931 (1979-06-01), Bricot
patent: 4224357 (1980-09-01), Iwai et al.
patent: 4225631 (1980-09-01), Berger et al.
Allport et al., "Block Copolymers" Wiley & Sons (1973) Chapter 8C.

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