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US 7,119,140 B2Granted
Transparent films, compositions, and method of manufacture thereof
OwnerRonald Basham, Gheorghe Cojocariu +4inventors
InventorsRonald Basham, Gheorghe Cojocariu, Robert R. Gallucci, Anshu S. Ghosal, Emine Elif Gurel, Grant Hay
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Abstract
A film comprising in admixture a thermoplastic resin component comprising a thermoplastic resin component and a glass having a refractive index within 0.04 of the thermoplastic resin component, wherein the film has a haze of less than about 20%, total transmittance of greater than about 70%, and a coefficient of thermal expansion of about 20 to about 80 um/m/° C. measured over a temperature range of 20 to 70° C. The films are of particular utility in optical applications such as light diffuser films.
Claims20
A film comprising in admixture:
- a thermoplastic resin component comprising a polycarbonate;
- and
- a glass having a refractive index within 0.04 of the thermoplastic resin component, wherein the glass is essentially free of compounds selected from the group consisting of aluminum oxides, boron oxides, boric acids and a combination comprising at least one of the foregoing;
- wherein the glass has been passivated with a passivating agent containing a silicon hydride functionality, wherein the passivating agent is of the formula (10) or (11);
- wherein m is greater than or equal to 1;
- the sum of m and n is equal to 1 to 10,000;
- m+p is 3 to about 1,000;
- Rg and Ri are each independently hydrogen, alkyl, aryl, alkylaryl, alkoxy, aryloxy, haloakyl, haloaryl, and haloalkylaryl;
- Rj and Rk are each independently alkyl, aryl, alkylaryl, alkoxy, aryloxy, haloalkyl, haloaryl, and haloalkylaryl;
- and Rh is trialkylsilyl, arylalkysilyl, triarylsilyl, hydrogen, alkyl, aryl, alkylaryl, haloalkyl, haloaryl, or haloalkylaryl;
- wherein the passivating agent is present at about 0.001 to about 1.0 wt. % of the film;
- wherein the film has a thickness of about 0.01 to about 3.0 mm;
- and
- wherein the film composition has a haze of less than about 20%, a total transmittance of greater than about 70%, and a coefficient of thermal expansion of about 20 to about 70 um/m/° C. measured over a temperature range of 20 to 70° C.
11 more elements
A polycarbonate composition comprising in admixture:
- a thermoplastic resin component comprising a polycarbonate;
- and
- a glass having a refractive index that is within 0.04 of the thermoplastic resin component, wherein the glass is essentially free of compounds selected from the group consisting of aluminum oxides, boron oxides, boric acids and a combination comprising at least one of the foregoing;
- wherein the glass has been passivated with a passivating agent containing a silicon hydride functionality, wherein the passivating agent is of the formula (10) or (11);
- wherein m is greater than or equal to 1;
- the sum of m and n is equal to about 10,000:
- m+p is 3 to about 1000;
- Rg and Ri are each independently hydrogen, alkyl, aryl, alkylaryl, alkoxy, aryloxy, haloalkyl, haloaryl, and haloalkylaryl;
- Rj and Rk are each independently alkyl, aryl, alkylaryl, alkoxy, aryloxy, haloalkyl, haloaryl, and haloalkylaryl;
- and Rh is trialkylsilyl, arylalkylsilyl, triarylsilyl, hydrogen, alkyl, aryl, alkylaryl, haloalkyl or haloalkylaryl;
- wherein the passivating agent containing a silicon hydride functionality is present at 0.001 to about 1.0 wt. % of the polycarbonate composition;
- and wherein the polycarbonate composition has a haze of less than about 20%, a total transmittance of greater than about 70%, a coefficient of thermal expansion of about 20 to about 70 um/m/° C. measured over a temperature range of 20° C. to 70° C., and a melt viscosity of about 0.5 to about 30.0 cm3/10 min measured according to ASTM D1238 at 300° C.
9 more elements
A film comprising in admixture:
- a thermoplastic resin component comprising a polycarbonate;
- and
- a glass having a refractive index within 0.04 of the thermoplastic resin component, wherein the glass contains greater than about 10 wt. % zirconia;
- wherein the glass is essentially free of compounds selected from the group consisting of aluminum oxides, boron oxides, boric acids and a combination comprising at least one of the foregoing;
- wherein the glass has been passivated with a passivating agent containing a silicon hydride functionality, wherein the passivating agent is of the formula (10) or (11);
- wherein m is greater than or equal to 1;
- the sum of m and n is equal to 1 to about 10,000;
- m+p is 3 to about 1000;
- Rg and Ri are each independently hydrogen, alkyl, aryl, alkylaryl, alkoxy, aryloxy, haloalkyl, haloaryl, and haloalkylaryl;
- Rj and Rk are each independently alkyl, aryl, alkylaryl, alkoxy, aryloxy, haloalkyl, haloaryl, and haloalkylaryl;
- and Rh is trialkylsilyl, arylalkylsilyl, triarylsilyl, hydrogen, alkyl, aryl, alkylaryl, haloalkyl, haloaryl or haloalkylaryl;
- wherein the passivating agent containing a silicon hydride functionality is present at 0.001 to about 1.0 wt. % of the polycarbonate composition;
- wherein the film has a thickness of about 0.01 to about 3.0 mm;
- and
- wherein the film composition has a haze of less than about 20%, a total transmittance of greater than about 70%, and a coefficient of thermal expansion of about 20 to about 70 um/m/° C. measured over a temperature range of 20 to 70° C.
12 more elements
Dependencies are inferred from the claim text.