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US 6,663,978 B1Granted
High refractive index pressure-sensitive adhesives
Assignee3M Innovative Properties Company
InventorsDavid B. Olson, Bettie C. Fong, Ying-Yuh Lu, Cheryl L. Moore, Todd R. Williams
Life of this patent
Estimating the term…
Abstract
The present invention provides pressure-sensitive adhesives having a refractive index of at least 1.48. The pressure-sensitive adhesives comprise at least one monomer containing a substituted or an unsubstituted aromatic moiety.
Claims47
An article comprising
- a substrate;
- a pressure-sensitive adhesive coated on the substrate, the pressure sensitive adhesive comprising an aromatic monomer in an amount of at least 20 parts per 100 parts of total monomer, the aromatic monomer having the following formula:
- wherein:
- Ar is an aromatic group which is unsubstituted or substituted with a substituent selected from the group consisting of Bry and (R3)z
- wherein y represents the number of bromine substituents attached to the aromatic group and is an integer from 0 to 3;
- R3 is a straight or branched alkyl of 2 to 12 carbons;
- and
- z represents the number of R3 substituents attached to the aromatic ring and is an integer from 0 to 1,
- provided that both y and z are not zero;
- X is either oxygen or sulfur;
- n is 0 to 3;
- R1 is an unsubstituted straight or branched alkyl linking group of 2 to 12 carbons;
- and
- R2 is either H or CH3.
11 more elements
An article comprising
- a substrate;
- a pressure-sensitive adhesive coated on the substrate, the pressure sensitive adhesive having a refractive index of at least 1.48 and comprising an aromatic monomer of the following formula:
- wherein:
- Ar is an aromatic group which is unsubstituted or substituted with a substituent selected from the group consisting of Bry and (R3)z
- wherein y represents the number of bromine substituents attached to the aromatic group and is an integer from 0 to 3;
- R3 is a straight or branched alkyl of 2 to 12 carbons;
- and
- z represents the number of R3 substituents attached to the aromatic ring and is an integer from 0 to 1,
- provided that both y and z are not zero;
- X is either oxygen or sulfur;
- n is 0to 3;
- R1 is an unsubstituted straight or branched alkyl linking group of 2 to 12 carbons;
- and
- R2 is either H or CH3.
11 more elements
An article comprising
- a substrate;
- a pressure-sensitive adhesive coated on the substrate, the pressure sensitive adhesive comprising an aromatic monomer of the following formula:
- wherein:
- Ar is selected from i) substituted or unsubstituted naphthyl and ii) an aromatic group which is substituted with a substituent selected from the group consisting of Bry and (R3)z
- wherein y represents the number of bromine substituents attached to the aromatic group and is an integer from 0 to 3;
- R3 is a straight or branched alkyl of 2 to 12 carbons;
- and
- z represents the number of R3 substituents attached to the aromatic ring and is an integer from 0 to 1,
- provided that both y and z are not zero;
- X is either oxygen or sulfur;
- n is 0to 3;
- R1 is an unsubstituted straight or branched alkyl linking group of 2 to 12 carbons;
- and
- R2 is either H or CH3.
11 more elements
Dependencies are inferred from the claim text.