Shaped plastic articles having replicated microstructure surfaces
First Claim
1. An oligomeric composition comprising oligomers of the formula:
- ##STR47## where each α
is independently 1 or 2,β
is zero or a number up to 20 and has an average value up to about 5,γ
is 2 or 3,"E" is represented by the one or more of the following formulas;
##STR48## where R2 is hydrogen or a lower alkyl,B is ##STR49## each f is an integer of 2 to 5, each d is independently zero or 1, ande is an integer of 1 to 5,"H" is represented by one or more of the formulas ##STR50## where each A is independently --NH-- or --O--,d is as defined above,g is zero or a number up to 5,each R3 is independently a di-valent carbocyclic-containing radical derived from benzene, naphthalene, cyclohexane, dicyclohexylmethane, diphenylmethane, or norbornene, and their lower alkyl-substituted derivatives, by removal of two of their hydrogen atoms, andeach R4 is independently an alkylene moiety with 2 to 10 carbon atoms, or a cycloalkylene moiety with 6 to 10 carbon atoms, and ##STR51## where d is as defined above,h'"'"' is zero or an integer of 1 to 10, andR5 is independently phenyl or methyl,and "S" is the polysiloxane residue remaining after removal of the active hydrogen atoms of the corresponding polyols or polyamines.
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Accused Products
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" polysiloxane segments, exposing the resulting case 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.
211 Citations
4 Claims
-
1. An oligomeric composition comprising oligomers of the formula:
- ##STR47## where each α
is independently 1 or 2,β
is zero or a number up to 20 and has an average value up to about 5,γ
is 2 or 3,"E" is represented by the one or more of the following formulas;
##STR48## where R2 is hydrogen or a lower alkyl,B is ##STR49## each f is an integer of 2 to 5, each d is independently zero or 1, and e is an integer of 1 to 5, "H" is represented by one or more of the formulas ##STR50## where each A is independently --NH-- or --O--, d is as defined above, g is zero or a number up to 5, each R3 is independently a di-valent carbocyclic-containing radical derived from benzene, naphthalene, cyclohexane, dicyclohexylmethane, diphenylmethane, or norbornene, and their lower alkyl-substituted derivatives, by removal of two of their hydrogen atoms, and each R4 is independently an alkylene moiety with 2 to 10 carbon atoms, or a cycloalkylene moiety with 6 to 10 carbon atoms, and ##STR51## where d is as defined above, h'"'"' is zero or an integer of 1 to 10, and R5 is independently phenyl or methyl, and "S" is the polysiloxane residue remaining after removal of the active hydrogen atoms of the corresponding polyols or polyamines. - View Dependent Claims (2, 3, 4)
- ##STR47## where each α
Specification