 Tracking type photovoltaic power generator and error correction method of its built-in clock |
| Therefore, an object of the present invention is to provide a tracking type photovoltaic power ... |
|
| Treatment of solid fuels |
| We claim: 1. A process for beneficiating and grinding solid fuel which comprises forming a mixture ... |
|
| Agglomerating coal slurry particles |
| What is claimed is: 1. A process for preparing a solid load of coal from an aqueous slurry of coal ... |
|
| Coal composition |
| It is an object of the present invention to provide a novel form of solid hydrocarbonaceous matter ... |
|
| Fire vent |
| To accomplish the foregoing and other objects of the present invention, there is provided a vent ... |
|
| Solar collector |
| OF THE INVENTION More particularly now and referring to the drawings, FIGS. 1 through 9 show the ... |
|
| Roof insulation structure and method of making same |
| The subject invention provides a structure and a method of making a roof insulation structure which ... |
|
| Fire escape device |
| In general, the present invention in one aspect provides a fire escape device. The escape device ... |
|
| Method for assembling a space enclosure structure |
| The present invention provides practical solutions for many of the above described pre-existing ... |
|
|
Fluid plaster composition
| Details |
Inventors: Fukuba, Kozo; Ogushi, Yasutomo; Harada, Haruhisa;
Assignee: Sumitomo Chemical Company, Limited (Osaka, JP)
Primary Examiner: Douglas; Winston A.
Assistant Examiner: Sheehan; John P.
Attorney, Agent or Firm: Birch, Stewart, Kolasch and Birch
A fluid plaster composition comprising gypsum hemihydrate of .alpha.-form and a surface active agent of phosphoric ester, which is useful for formation of a horizontal surface by application onto a floor surface. |
|
DETAILED DESCRIPTION What is claimed is: 1.
A plaster composition which comprises: (1) gypsum containing gypsum hemihydrate of the .
alpha.
-form in an amount of not less than about 50% by weight of the total plaster content, (2) about 0.
01 to 10 parts by weight to 100 parts by weight of the gypsum of a surface reactive agent of a phosphoric ester of the formula: ##STR2## wherein R.
sub.
1, R.
sub.
2, and R.
sub.
3 are each alkyl, alkylaryl or aryl having 1 to 50 carbon atoms, and n.
sub.
1, n.
sub.
2, and n.
sub.
3 are each an integer of 1 to 30, (3) a sulfonic dispersing agent, and (4) an alkali metal sulfate selected from the group consisting of sodium sulfate, potassium sulfate, rubidium sulfate and cesium sulfate.
2.
The plaster composition according to claim 1, which contains water.
3.
The plaster composition according to claim 1, which contains about 20 to 70 parts by weight of water.
4.
The plaster composition according to claim 3, wherein the sulfonic dispersing agent and the alkali metal sulfate are present in amounts of about 0.
1 to 2.
5 parts by weight and about 0.
2 to 3.
0 parts by weight, respectively.
5.
The plaster composition according to claim 1, wherein the gypsum hemihydrate of .
alpha.
-form has a normal water consistency of about 27 to 60% by weight.
6.
The plaster composition according to claim 1, wherein the surface active agent is a phosphoric ester having an HLB value of about 6 to 10, or the alkali metal or alkaline earth metal salt thereof.
7.
The plaster composition according to claim 5, wherein the surface active agent is a member selected from the group consisting of phosphates of polyalkylene alkyl ethers and phosphates of polyoxyalkylene alkylaryl ethers.
8.
The plaster composition according to claim 1, wherein the sulfonic dispersing agent is selected from the group consisting of sodium ligninsulfonate, calcium ligninsulfonate, sodium salt of .
beta.
-naphthalenesulfonic acidformaldehyde condensation product, .
beta.
-creosotesulfonic acid, condensation product of cresolsulfonic acid and sulfonate of melamine-formaldehyde condensation product
|
| Related patents |
|
|
Flow deflecting assembly
What is claimed is: 1. A flow deflecting assembly comprising: a fluid passage generally rectangular in cross section defined by a pair of parallel opposed broad walls ...
|
|
|
Heterojunction solar cell with passivated emitter surface
OF THE PREFERRED EMBODIMENTS In general, the invention pertains to the fabrication and characterization of a heterojunction solar cell with an efficiency greater than 25...
|
|
|
Mount for solar collectors
I claim: 1. A support for mounting solar energy collectors upon the roof rafters or laths of a roof of a building, said support being matingly receivable in an opening ...
|
|
|
Solar cell modules
Generally speaking, the present invention is based on the discovery that the electric output of a solar cell module can be enhanced by providing light scattering ...
|
|
|
Circular building structure
Accordingly, it is an object of the present invention to provide an aesthetically pleasing building structure. It is a further object of the present invention to provide ...
|
|
|
Process for producing cold-rolled strips and sheets of austenitic stainless steel
The inventors took note of austenitic stainless steels in which no problem arose with respect to the surface state of the product in the conventional process, and a melt ...
|
|
|
Line-focus photovoltaic module using solid optical secondaries for improved radiation resistance
We have devised a novel line-focus tandem-cell electric power supply integrating a new durable, low-cost line-focus, arched Fresnel lens and a unique line-focus, ...
|
|
|
Solar cell module
The object of the present invention is to solve the above-mentioned problems of the prior art and to provide a solar cell module which is lightweight and has a simple ...
|
|
|
Solar battery module and passive solar system using same
An object of the present invention is to provide a solar cell module which has improved long-term reliability of use when maintained in a fixed state, ensuring ...
|
|
|
Photovoltaic module framing system with integral electrical raceways
An improved photovoltaic module framing systems is provided which is user friendly, easy to install and assemble, and economical. Advantageously, the reliable multi-...
|
|
|
Manufacturing Materials 
