1. A golf ball comprising:
a core; and
a cover formed over the core, the cover composed of a thermosetting polyurethane material formed from reactants comprising a polytetramethylene ether glycol terminated 4,4\u2032-diphenylmethane diisocyanate polyurethane prepolymer and a curative blend comprising 4,4\u2032-methylenebis-(2,6-diethyl)-aniline and a second curing agent;
wherein the cover has an aerodynamic surface geometry thereon.
2. The golf ball according to claim 1 further comprising at least one boundary layer disposed between the core and the cover.
3. The golf ball according to claim 2 wherein the boundary layer is composed of a blend of ionomers.
4. The golf ball according to claim 1 wherein the second curative is N,N\u2032-dialkylamino-diphenyl-methane.
5. The golf ball according to claim 1 wherein the second curative is an aliphatic diamine.
6. A golf ball comprising:
a core comprising a polybutadiene mixture;
a boundary layer formed over the core; and
a cover formed over the boundary layer, the cover composed of a thermosetting polyurethane material formed from reactants comprising a polytetramethylene ether glycol terminated 4,4\u2032-diphenylmethane diisocyanate polyurethane prepolymer and a curative blend comprising 4,4\u2032-methylenebis-(2,6-diethyl)-aniline in an amount of 50 parts per one hundred parts of the curative blend and a second curative in an amount of 50 parts per one hundred parts of the curative blend;
wherein the cover has an aerodynamic surface geometry thereon.
7. The golf ball according to claim 6 wherein the second curative is N,N\u2032-dialkylamino-diphenyl-methane.
8. The golf ball according to claim 6 wherein the second curative is an aliphatic diamine.
9. The golf ball according to claim 6 wherein the second curative is polytetramethylene ether glycol.
10. A golf ball comprising:
a core comprising a polybutadiene mixture, the core having a diameter ranging from 1.35 inches to 1.64 inches and having a PGA compression ranging from 50 to 90;
a boundary layer formed over the core, the boundary layer composed of a blend of ionomer materials, the boundary layer having a thickness ranging from 0.020 inch to 0.075 inch, the blend of ionomer materials having a Shore D hardness ranging from 50 to 75 as measured according to ASTM-D2240; and
a cover formed over the boundary layer, the cover composed of a thermosetting polyurethane material formed from reactants comprising a 4,4\u2032-diphenylmethane diisocyanate polyurethane prepolymer and a curative blend comprising 4,4\u2032-methylenebis-(2,6-diethyl)-aniline in an amount of 50 parts per one hundred parts of the curative blend and a second curative in an amount of 50 parts per one hundred parts of the curative blend, wherein the thermosetting polyurethane material has a Shore D hardness ranging from 30 to 60 as measured according to ASTM-D2240, a thickness ranging from 0.015 inch to 0.044 inch, and an aerodynamic surface geometry thereon.
11. The golf ball according to claim 10 wherein the second curative is N,N\u2032-dialkylamino-diphenyl-methane.
12. The golf ball according to claim 10 wherein the second curative is an aliphatic diamine.
13. The golf ball according to claim 10 wherein the second curative is polytetramethylene ether glycol.
14. The golf ball according to claim 10 wherein the 4,4\u2032-diphenylmethane diisocyanate polyurethane prepolymer is a polytetramethylene ether glycol terminated 4,4\u2032-diphenylmethane diisocyanate polyurethane prepolymer.
15. The golf ball according to claim 10 wherein the 4,4\u2032-diphenylmethane diisocyanate polyurethane prepolymer is an ester terminated 4,4\u2032-diphenylmethane diisocyanate polyurethane prepolymer.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of improving indoor air quality using various types of windows, comprising:
generating hydroxyl radicals (\u2014OH) in an indoor space to decompose contaminants and thus remove the contaminants;
measuring contents of the indoor contaminants and numerically displaying the measured contents; and
forcibly exhausting contaminated indoor air when the content of contaminants is at or above an allowable limit, and stopping exhaustion of air when the content is at or below the allowable limit, so that the indoor air quality is maintained at a suitable state and improved.
2. The method as set forth in claim 1, wherein the generation of the hydroxyl radicals (\u2014OH) is repeatedly and automatically controlled to be turned on and off by a timer, depending on a volume of the indoor space regardless of the degree of contamination of the indoor air.
3. The method as set forth in claim 1, wherein the measurement of contents of the indoor contaminants is achieved by measuring a content of carbon dioxide (CO2), among the contaminants of indoor air.
4. A device for improving indoor air quality using various types of windows, comprising:
an exhaust path provided at a window frame to exhaust air;
a front case, which is provided in front of the exhaust path in a room and through which an inlet is formed;
a rear case, which is provided at the rear of the exhaust path outside the room and through which an outlet is formed;
an exhaust unit, which is provided in the rear case to forcibly exhaust the contaminated indoor air through the exhaust path or to stop exhaustion of the air;
a contaminant content measurement indicator for continuously measuring a content of contaminants in the indoor air using a sensor and for numerically displaying measured values therethrough;
a control unit for controlling the exhaust unit so as to forcibly exhaust the contaminated indoor air or stop exhaustion of the air, respectively, when the degree of contamination of the indoor air is evaluated to be at or above the allowable limit or at or below the allowable limit using the contaminant content measurement indicator; and
a hydroxyl radical generator which readily generates hydroxyl radicals (\u2014OH) independently of the degree of contamination of the indoor air to decompose the indoor contaminants and thus remove the contaminants.
5. The device as set forth in claim 4, wherein the exhaust unit comprises an exhaust fan provided with a motor, and an exhaust path controlling member for opening or closing the exhaust path.
6. The device as set forth in claim 5, wherein the exhaust path controlling member comprises:
a fixed plate through which a plurality of first exhaust slits is formed at regular intervals and which is fixed to a window frame outdoors so as to correspond to the exhaust path; and
a controlling plate which is movably connected to the fixed plate by a solenoid fixed to the fixed plate, so that a plurality of second exhaust slits is formed at regular intervals to simultaneously open or close the first exhaust slits of the fixed plate and thus exhaust contaminated indoor air through the exhaust path or stop exhaustion of air.
7. The device as set forth in claim 6, wherein the motor of the exhaust fan and the solenoid of the exhaust path controlling member are simultaneously or sequentially controlled by the control unit.
8. The device as set forth in claim 6, wherein guide grooves for receiving and guiding bent portions of the controlling plate are further formed on the fixed plate, and openings are further formed through the controlling plate so that the controlling plate is stably moved while the controlling plate is connected to the fixed plate using screws threaded therethrough.
9. The device as set forth in claim 4, wherein the sensor for measuring the content of the contaminants is a sensor for measuring carbon dioxide content of the indoor air.
10. The device as set forth in claim 4, wherein the generation of the hydroxyl radicals (\u2014OH) by the hydroxyl radical generator is turned on or off depending on a volume of the indoor space.
11. The device as set forth in claim 4, wherein the hydroxyl radical generator is automatically controlled using a timer.