Glass articles with low-friction coatings
First Claim
1. A coated glass article comprising:
- a glass container comprising a first surface and a second surface opposite the first surface, wherein the first surface is an exterior surface of the glass container and the glass container is formed from an alkali aluminosilicate glass having a Class HGA 1 hydrolytic resistance when tested according to the ISO 720-1985 testing standard; and
a low-friction coating bonded to at least a portion of the first surface of the glass container, the low-friction coating having a thickness of less than or equal to about 1 micron and comprising;
a polymer selected from the group consisting of polyimides, fluoropolymers, silsesquioxane-based polymers, and silicon resins; and
a coupling agent disposed between the polymer and the first surface of the glass body, whereinthe portion of the first surface of the coated glass container with the bonded low-friction coating has a coefficient of friction of less than or equal to 0.7 relative to a like-coated glass container;
the coated glass container is thermally stable after depyrogenation at a temperature of at least about 260°
C. for 30 minutes in air; and
the coated glass container is a pharmaceutical package.
1 Assignment
0 Petitions
Accused Products
Abstract
Low-friction coatings and glass articles with low-friction coatings are disclosed. According to one embodiment, a coated glass article may include a glass body comprising a first surface and a low-friction coating positioned on at least a portion of the first surface of the glass body. The low-friction coating may include a polymer chemical composition. The coated glass article may be thermally stable at a temperature of at least about 260° C. for 30 minutes. A light transmission through the coated glass article may be greater than or equal to about 55% of a light transmission through an uncoated glass article for wavelengths from about 400 nm to about 700 nm. The low-friction coating may have a mass loss of less than about 5% of its mass when heated from a temperature of 150° C. to 350° C. at a ramp rate of about 10° C./minute.
-
Citations
37 Claims
-
1. A coated glass article comprising:
-
a glass container comprising a first surface and a second surface opposite the first surface, wherein the first surface is an exterior surface of the glass container and the glass container is formed from an alkali aluminosilicate glass having a Class HGA 1 hydrolytic resistance when tested according to the ISO 720-1985 testing standard; and a low-friction coating bonded to at least a portion of the first surface of the glass container, the low-friction coating having a thickness of less than or equal to about 1 micron and comprising; a polymer selected from the group consisting of polyimides, fluoropolymers, silsesquioxane-based polymers, and silicon resins; and a coupling agent disposed between the polymer and the first surface of the glass body, wherein the portion of the first surface of the coated glass container with the bonded low-friction coating has a coefficient of friction of less than or equal to 0.7 relative to a like-coated glass container; the coated glass container is thermally stable after depyrogenation at a temperature of at least about 260°
C. for 30 minutes in air; andthe coated glass container is a pharmaceutical package. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A coated glass article comprising:
-
a glass container comprising a first surface and a second surface opposite the first surface, wherein the first surface is an exterior surface of the glass container; and a low-friction coating bonded to at least a portion of the first surface of the glass container, the low-friction coating comprising; a coupling agent layer in direct contact with the first surface of the glass container, the coupling agent layer comprising at least one of; a first silane, a hydrolysate thereof, or an oligomer thereof, wherein the first silane is an aromatic silane;
ora chemical formed from the oligomerization of at least the first silane and a second silane; a polymer layer in direct contact with the coupling agent layer, the polymer layer comprising a polyimide, wherein; the first silane and the second silane are different; and the coated glass container is thermally stable after depyrogenation at a temperature of at least about 280°
C. for 30 minutes in air. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A coated glass article comprising:
-
a glass container comprising a first surface and a second surface opposite the first surface, wherein the first surface is an exterior surface of the glass container and the glass container is formed from a borosilicate glass that meets the Type 1 criteria according to USP <
660>
; anda low-friction coating bonded to at least a portion of the first surface of the glass container, the low-friction coating having a thickness of less than or equal to about 1 micron and comprising; a polymer selected from the group consisting of polyimides, fluoropolymers, silsesquioxane-based polymers, and silicone resins; and a coupling agent disposed between the polymer and the first surface of the glass body, wherein; the portion of the first surface of the coated glass container with the bonded low-friction coating has a coefficient of friction of less than or equal to 0.7 relative to a like-coated glass container; the coated glass container is thermally stable after depyrogenation at a temperature of at least about 260°
C. for 30 minutes in air; andthe coated glass container is a pharmaceutical package. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
-
Specification