PURPOSE:The titled film of normal-temperature film-forming type for covering bridges, ships, cars, etc., having specific inherent viscosity and transparency, comprising a dried film of a blend of a vinylidene fluoride copolymer having beta type crystal structure and a solvent. CONSTITUTION:For example, (A) 40-95mol% vinylidene fluoride (VDF) is copolymerized with (B) a monomer (e.g., vinyl fluorid...

A process for controlling bead size in the production of expandable styrene polymers by suspension polymerization is carried out by adding protective colloids to the aqueous phase before polymerization begins, such protective colloids being used which are homogeneously soluble in water over the entire temperature range from 25 DEG to 125 DEG C. and in which the concentration range being employed...

A process for controlling bead size in the manufacture of expandable styrene polymers by suspension polymerization, wherein, referred to the aqueous phase, a concentration of ions of calcium, aluminum, metals of the 1st, 2nd, or 6th through 8th side groups of the period table of elements of 3x1031 5 to 3x10-2% by mass is established, these metal ions being present as cations in the higher oxidatio...

1. Disazo compounds of the general formula (1) see diagramm : EP0133283,P11,F1 in which D is the phenyl radical or a naphthyl radical, both of which can be substituted by a sulfo group of the formula -SO3 M and furthermore by one or two substituents from the group comprising methyl, ethyl, methoxy, ethoxy, chlorine, bromine and carboxy of the general formula -COOM, and each of which is substitut...

A process for initiating and controlling the regeneration of spent fluid catalytic cracking catalyst containing catalytically effective amounts of a C0 conversion promotor and for the essentially complete catalytic conversion of C0 to C02 both in a dense bed of catalyst maintained in an FCC regeneration zone. The process comprises (a) passing to a dense-phase catalyst bed in a regeneration zone sa...

An Nd:YAG laser of small size with a passive quality switch is combined with a slit-lamp instrument, to form an ophthalmological combination instrument for diagnosis and treatment. By a plurality of pulses within a pulse train, which succeed each other within the mu sec range, particularly good therapeutic effects are obtained. A second laser, emitting continuous visible radiation, has its beam a...

PURPOSE:To increase the angle allowance for condensed spot trains on an information track and a disk and to facilitate easy control, by dividing a reflected luminous flux into two parts to set a 2-split detector at each point of condensing points of those divided reflected luminous fluxes and therefore attaining the one- dimensional control of a photodetector. CONSTITUTION:The luminous flux delive...

1. Heat insulating curtain comprising at least two curtain webs (30 to 33) provided in mutually spaced relationship and insertable into a curtain aperture (3), and lateral guide rails (9) for receiving the side edges of the unwound curtain webs which may be unwound in common from a roll (4) via guide elements (6) and which, at their end averted from the roll, have weight members (7), characterized...

A phase lock loop circuit comprises a variable frequency oscillator having a control input and an output, a divider having an input coupled with the output of the oscillator and an output coupled with the first input of a phase or frequency comparator. The comparator has a second input for a reference frequency (FREF) and an output coupled with the oscillator control input for providing a signal w...

A blind fastener including a pin and a sleeve and having grip compensating means for accommodating workpieces varying in total thickness and having means for expanding the sleeve for filling the clearance between the fastener and associated openings in the workpieces and at the same time providing material from the sleeve in the area of expansion to define a lock between the pin and the sleeve.

A blind fastener including a pin and a sleeve and having grip compensating means for accommodating workpieces varying in total thickness and having means for expanding the sleeve for filling the clearance between the fastener and associated openings in the workpieces and at the same time providing material from the sleeve in the area of expansion to define a lock between the pin and the sleeve.