Abstract:
An ultraviolet radiation resistant coating is disclosed comprising cerium oxide in an inorganic oxide matrix formed by the hydrolysis and condensation of an organoalkoxysilanie and/or other metal alkoxide in combination with the reaction product of cerium oxide and tetraalkylsilicate.
Abstract:
Organic-inorganic hybrid polymers and a method of making them by reaction of organic monomers with organofunctional alkoxysilanes are disclosed.
Abstract:
A method for dry-spinning a metal alkoxide sol to form fibers which may be gathered and wound in a conventional manner, wherein the atmosphere in the spin chamber comprises ammonia to dry the fibers to a non-sticky state.
Abstract:
An organoalkoxysilane/metal oxide sol-gel composition and method for its production are disclosed whereby an organoalkoxysilane of the general formulaR.sub.x Si(OR').sub.4-xwherein R is an organic radical, R' is a low molecular weight alkyl radical, and x is at least 1 and less than 4, is partially hydrolyzed in organic solution and reacted with a titanium or zirconium alkoxide of the general formula M(OR").sub.4 wherein M is titanium or zirconium and R" is a lower alkyl radical. The composition is hydrolyzed, dried and condensed to form an organosiloxane/metal oxide abrasion-resistant coating on a substrate.
Abstract:
A titanate/organosilane copolymer is disclosed for use as a primer to promote adhesion between a rigid polymer substrate and an elastomeric interlayer or inorganic coating, or as a release agent to prevent such adhesion depending on the nature of the organic moiety of the organosilane.
Abstract:
A method for preparing aluminum trimetaphosphate comprising various chain form polyphosphate species by heating a mixture of aluminum hydroxide and ammonium phosphate is disclosed.
Abstract:
A method for preparing a trimetaphosphate of a trivalent species by heating a mixture of ammonium phosphate and an oxygen-containing compound of the trivalent species is disclosed.
Abstract:
A paddle lock has a body, a lever, a latch, a locking bolt, and a bolt driving device. The lever is pivotally mounted on the body. The latch is mounted retractably in the body and is connected with the lever. The locking bolt is mounted slidably in the body and has a bolt rod, a retractable head, and a spring. The bolt rod is mounted slidably in the body. The retractable head is connected retractably to an end of the bolt rod and selectively extends out of the body. The spring is connected between the bolt rod and the retractable head. The bolt driving device is mounted in the body and is connected with the bolt rod of the locking bolt to push the locking bolt to extend out of the body or to retract the locking bolt into the body.
Abstract:
An optical imaging lens set includes a first lens element to a plastic fifth lens element from an object side toward an image side along an optical axis. Each first lens and second lens element has positive refractive power. The third lens element has an image-side surface with a convex portion in a vicinity of the optical axis. The fourth lens element has an image-side surface with a convex portion in a vicinity of the optical axis. The fifth lens element has an image-side surface with a concave portion in a vicinity of the optical axis and a convex portion in a vicinity of its periphery.
Abstract:
An optical imaging lens set includes: a first lens element with positive refractive power, a second lens element having an image-side surface with a concave portion in a vicinity of its periphery, a third lens element with positive refractive power, having a convex image-side surface, an object-side surface with a concave portion in a vicinity of its periphery, a fourth lens element having a concave object-side surface, and a plastic fifth lens element having an image-side surface with a concave portion in a vicinity of the optical axis. The total thickness Ta1 of the all lens elements along the optical axis, all four air gaps Gaa between each lens element along the optical axis, the thickness T3 of the third lens element along the optical axis and the thickness T5 of the fifth lens element along the optical axis satisfy the relation (Ta1+Gaa)/(T3+T5)≦4.00.