Polymeric materials with negative photoelastic constants
OwnerPraveen Agarwal, Justice Alaboson +5inventors
InventorsPraveen Agarwal, Justice Alaboson, Shih-Wei Chang, John W. Lyons, Kathleen M. O'Connell, Caroline Woelfle-Gupta, Weijun Zhou
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Abstract
A polymeric material having a negative photoelastic constant. The polymeric material comprises: (a) a polymer comprising polymerized units of 2-vinylpyridine, 4-vinylpyridine, methyl methacrylate or a combination thereof; (b) a C9-C25 aliphatic polycyclic compound; and (c) an organic compound having a boiling point of at least 200° C.
Claims9
A polymeric material comprising:
- (a) a polymer comprising polymerized units of 2-vinylpyridine, 4-vinylpyridine, methyl methacrylate or a combination thereof;
- (b) a C9-C25 aliphatic polycyclic compound;
- and (c) an organic compound having a boiling point of at least 200° C. which is liquid at 100° C.
A polymeric material comprising:
- (a) a polymer comprising polymerized units of 2-vinylpyridine, 4-vinylpyridine, methyl methacrylate or a combination thereof;
- (b) a compound of formula (II);
- wherein G represents 1-5 substituents selected from the group consisting of fluoro and chloro;
- and (c) an organic compound having a boiling point of at least 200° C. which is liquid at 100° C., wherein said organic compound is not a compound of formula (II).
A polymeric material comprising:
- (a) a polymer comprising polymerized units of 2-vinylpyridine, 4-vinylpyridine, methyl methacrylate or a combination thereof;
- (b) a mono-, di- or tri-saccharide having from four to eleven aromatic ester substituents;
- and (c) an organic solvent having a boiling point of at least 200° C. which is liquid at 100° C.
A method for producing a polymeric material having a negative photoelastic constant;
- said polymeric material comprising:
- (a) a polymer comprising polymerized units of 2-vinylpyridine, 4-vinylpyridine, methyl methacrylate or a combination thereof;
- (b) a C9-C25 aliphatic polycyclic compound;
- and (c) an organic compound having a boiling point of at least 200° C. which is liquid at 100° C.;
- said method comprising steps of:
- (i) blending said polymer and said C9-C25 aliphatic polycyclic compound with a first solvent having a boiling point from 35 to 140° C. and the aforementioned organic solvent having a boiling point of at least 200° C. to produce a wet polymeric material;
- (b) coating said wet polymeric material on a glass substrate;
- and (c) heating to a temperature from 50 to 120° C. to remove at least 90% of the first solvent.
Dependencies are inferred from the claim text.