Abstract: A coating processing apparatus is structured by a rotating cup having an opening portion on the top thereof for housing a substrate, a spin chuck for rotating the substrate in the rotating cup, a lid body having an opening and attached to the rotating cup, a resist solution discharge nozzle for discharging a resist solution onto the substrate through the opening of the lid body, a small lid for blocking up the opening of the lid body, and a protrusion member provided on the underneath surface of the small lid to be positioned inside the rotating cup when the small lid is attached into the opening of the lid body. Thus, adjustment of a film thickness of a coating film after a coating solution is coated can be effectively performed.

Abstract: A sealing device for a roll bearing which includes an outer ring, an inner ring, a rolling element rotatably interposed between the outer and inner rings, and a retainer, comprises a seal holder having a seal holder portion and a seal body attached to the seal holder portion. A portion of the retainer is received in a sealing space defined by the seal holder portion while the portion of the retainer is being disposed outside a range of interference with the seal holder portion. The sealing device further comprises conical surfaces 10 and 19 which are provided as fitting surfaces of a seal holder portion 9a and a seal body 17 fit to the seal holder portion 9a. Accordingly, a space 23 into which one end of a retainer of the bearing is receivable can be formed, and the inside diameter d of the seal holder portion 9a can be reduced.

Abstract: Refrigerating machine oils comprises for use with a refrigerant containing ammonia, which comprises a polypropylene glycol monoether represented by the formula wherein R is an alkyl group having 1 to 10 carbon atoms and n is an integer to be selected such that the number-average molecular weight becomes 500 to 5,000.

Abstract: A refrigerating machine oil composition comprising: (A) a hydrocarbon oil; and (B) an alicyclic polycarboxylic acid ester compound having an alicyclic ring and at least two ester groups represented by formula (1) bonded to adjacent carbon atoms of the alicyclic ring: —COOR1  (1) wherein R1 represents a hydrocarbon group having 1-30 carbon atoms, and R1 of each of the ester groups may be the same or different from each other.

Abstract: A refrigerating machine oil composition comprising: (A) an alicyclic polycarboxylic acid ester compound having an alicyclic ring and at least two ester groups represented by formula (1) bonded to adjacent carbon atoms of the alicyclic ring: —COOR1  (1) wherein R1 represents a hydrocarbon group having 1-30 carbon atoms, and R1 of each of the ester groups may be the same or different from each other; and (B) at least one epoxy compound selected from a group consisting of glycidyl ester epoxy compounds and alicyclic epoxy compounds.

Abstract: A refrigerator oil composition for a fluoroalkane refrigerant comprises a base oil composed principally of at least one oxygen-containing compound and, based on the total weight of the composition, [I] 0.5-5.0 wt. % of a phosphate ester represented by the formula (A), and [II] (a) 0.1-5.0 wt. % of a halogenated phosphate ester represented by the formula (B) and/or (b) 0.01-2.0 wt. % of an acid phosphate ester represented by the formula (C), an amine salt thereof or a combination of both the acid phosphate ester and the amine salt. ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 represent a C.sub.1-18 hydrocarbon or oxygen-containing hydrocarbon group; R.sup.4, R.sup.5 and R.sup.6 represent a C.sub.1-18 hydrocarbon or oxygen-containing hydrocarbon group or a group similar to the C.sub.