摘要:
A method for producing a high softening point aliphatic petroleum resin, which comprises using as a feed oil a C5 fraction which is a mixture of saturated and unsaturated hydrocarbon components having boiling points within a range of from 20.degree.0 to 110.degree. C. formed by cracking or modification of naphtha or petroleum and conducting polymerization of the feed oil by means of a Friedel-Crafts catalyst, wherein isoprene is added to the feed oil in an amount of from 1 to 20% by weight, and the polymerization is conducted by introducing the feed oil into the catalyst dissolved or suspended in an organic solvent, over a period of at least 1/2 of the polymerization time.
摘要:
A simulation method, to be implemented in a computer, carries out a simulation of a semiconductor integrated circuit. The simulation method carries out a layout analysis based on layout data of a circuit formed by cells and stores values of layout parameters obtained by the layout analysis. Basic cell characteristics of the cells are read from a net list representing the extracted basic cell characteristics by the layout parameters and the basic cell characteristics represented by the layout parameters are stored. The stored values of the layout parameters are read and substituted into the basic cell characteristics represented by the layout parameters to obtain cell characteristics, and the cell characteristics are stored. An operation of the circuit is analyzed using the cell characteristics that are obtained.
摘要:
A simulation method, to be implemented in a computer, carries out a simulation of a semiconductor integrated circuit. The simulation method carries out a layout analysis based on layout data of a circuit formed by cells and stores values of layout parameters obtained by the layout analysis. Basic cell characteristics of the cells are read from a net list representing the extracted basic cell characteristics by the layout parameters and the basic cell characteristics represented by the layout parameters are stored. The stored values of the layout parameters are read and substituted into the basic cell characteristics represented by the layout parameters to obtain cell characteristics, and the cell characteristics are stored. An operation of the circuit is analyzed using the cell characteristics that are obtained.
摘要:
An oil coater for mats which comprises a mat-supporting moving surface, a coating roller disposed above said mat-supporting moving surface and having on the periphery thereof a foam layer capable of being impregnated with an oiling composition, a press roller having a diameter smaller than the diameter of said coating roller and having on the periphery thereof a foam layer capable of being impregnated with an oiling composition, a first bearing mechanism which supports said press roller at a position upstream of said coating roller so that the top face of said press roller is substantially on the same horizontal plane with the top face of said coating roller and the degree of pressed contact between said coating roller and said press roller can be adjusted, a mat-feeding roller disposed below said mat-supporting moving surface, a second bearing mechanism which supports said feeding roller so that the axis of said feeding roller is substantially on the same vertical plane with the axis of said coating roller and the gap between said feeding roller and said coating roller can be adjusted, a pair of confronting dam plates arranged to form an oil reservoir on the surfaces of said coating roller and said press roller through seal portions above the contact position of said two rollers, an oil feed mechanism for supplying an oiling composition to said oil reservoir, a mechanism for controlling the level of the oiling composition in said oil reservoir and a driving mechanism for driving said coating roller and said feeding roller, wherein the amount of the oiling composition coated on the mat can be controlled by adjusting the degree of pressed contact between said coating roller and said press roller and the gap between said coating roller and said feeding roller.