Abstract: A new monomer is used to prepare homo or copolymers containing blocked imide groups which are characterized by deblocking in two stages, first when acid catalyzed and thereafter in aqueous alkaline solutions. Such polymers are, therefore, especially useful in formulating positive photoresist compositions. The polymers are combined with a latent photoacid, which when exposed to actinic radiation removes the acid sensitive blocking moiety, preferably an acetal or ketal group, leaving a methylol group or substituted methylol group remaining attached to the nitrogen atom, which groups are subsequently removed by exposure to aqueous alkaline developing solutions, leaving only imide groups. ##STR1## The new monomer is a derivative of maleimide in which the imide hydrogen has been replaced with a methylol group, which is subsequently reacted to form an acetal or ketal. Preferred monomers include N-(2,4-dioxa-3,3-dimethylpentyl)-2H,5H-2,5-dioxopyrrole and related compounds.

Abstract: Acid addition salts of arylketoamines are prepared by reacting arylisonitrosoalkanones with hydrogen in the presence of a transition metal catalyst and strong acid in a dipolar aprotic solvent.

Abstract: Synthetic fiber safety cutting scissors comprising a pair of first and second elongated scissor blades, each having an inner side and an outer side and a plurality of cutting edges separated by a plurality of non-cutting protrusions, and a gripping means; and a means for pivotally securing said first and second scissor blades to each other with said inner sides facing towards each other such that the said cutting edges cooperate with each other to cut strands of synthetic fiber. It has been found that with the protrusions that foreign objects such as fingers may be prevented from being intersected at the cutting edge.

Abstract: A process for preparing a substituted styrene by reacting a bisarylalkyl ether in the presence of an acid catalyst is disclosed. The process is preferably used for the preparation of 4-acetoxystyrene from 4,4'-(oxydiethylidene)bisphenol diacetate and 4-methoxystyrene from 4,4'-(oxydiethylidene)bisphenol dimethyl ether. A process for preparing a bisarylalkyl ether by reacting a corresponding arylalkanol in the presence of an acid catalyst is also disclosed.

Abstract: The invention provides a method for protecting an image which comprises providing a multilayered colored image on a permanent receiver which may be any of a wide range of materials. A photosensitive element on a substrate is laminated to a temporary element and exposed with substrate removal before development. After development, the steps are repeated with another color. A protective element is laminated to the colored image. After removal of the support of the temporary element, the colored image with protective element is laminated to a permanent receiver.

Abstract: A process for producing a color image on color proofing film which comprises:(i) providing digital data representative of the shape and color of an original image;(ii) inputting the digital data into a computer;(iii) providing a color printer which is in communication with and controlled by the computer;(iv) providing the printer with a precoated photosensitive color proofing film, a thermal wax and means for transferring the wax to the color proofing film;(v) melting the thermal wax, in response to the digital data, in a manner which provides a pattern corresponding to the shape of the original image, the pattern providing a temporary wax optical mask;(vi) exposing the photosensitive layer of the color proofing film, through the thermal wax optical mask, to actinic radiation, the wax on the color proofing film absorbing the actinic radiation, whereby a photoreaction occurs in the exposed areas of the photosensitive layer of the color proofing film; and(vii) developing the color proofing film to provide a col

Abstract: The selective formation of 2-acetonaphthalene is achieved by acetylating naphthalene in the presence of liquid hydrogen fluoride. The 2-acetonaphthalene can be separated from the formed 1-acetonaphthalene isomer by successive hydrogenation of the isomer mixture and dehydration. The hydrogenation is selective to the 2-isomer while the 1-acetonaphthalene remains unreacted. Upon completion, 2-vinylnaphthalene can be distilled off from the unreacted 1-acetonaphthalene.

Abstract: A slide gate closure is provided for bottom discharge bins which are used for storing and transporting large quantities of dry chemicals. The slide gate includes screw means attached to the gate whereby the contents of the container may be fully or partially removed through a discharge opening by rotation of the screw means. Wedges are provided on and about the gate to form a six point contact between the slide gate and a sealing gasket.

Abstract: The invention provides a fiber testing device for thermomechanical testing of fibers which preferably includes a linear step motor coupled to a first fiber gripping jaw. A second fiber gripping jaw is positioned in linear relation to the first gripping jaw and is coupled to a load cell. Advantageously, the apparatus includes a chamber for maintaining a fiber test specimen in a substantially thermally isolated environment during testing of the fiber. A heating means and a cooling means are connected to the chamber. The heating means and cooling means are controlled by a control means which also controls the position of the linear step motor. The fiber testing device of the invention is capable of performing complicated mechanical and thermal fiber testing protocals without operator involvement except for initiation of the testing sequence.

Abstract: This invention provides spiral-wound hollow fiber membrane fabric-containing cartridges and modules for separations and other phase contact applications, in which the cartridges contain a turbulence-promoting fibrous web which is substantially-co-extensive to the fabric-like array, that induces turbulent fluid flow in the shell side of the hollow fiber membrane bundle; and methods for fabricating such cartridges.

Abstract: A process for spinning an organic synthetic melt spinnable polymer includes the steps of: extruding the polymer through a spinneret; passing the filaments from the spinneret through an elongated zone; maintaining the filaments at a temperature above the glass transition temperature of the polymer within the zone; and thereafter converging the filaments. Alternatively, the process includes the steps of: extruding the polymer through a spinneret; providing an elongated zone having a length of at least 5 meters or means for controlling the temperature within said zone from a predetermined maximum to a predetermined minimum; passing the filaments through the zone; and thereafter converging the filaments.

Abstract: This invention relates to a method for forming a colored image on a degradable sheet material. As a result, a negative- or positive-working color proofing sheet can be produced on a variety of printing paper stocks. Upon exposure to an actinic radiation source through a screened image and development, it can accurately reproduce the image on the degradable sheet. The construction is useful as a color proof which can be employed to accurately predict the image quality from a lithographic printing process on a variety of printing surfaces.

Abstract: Photosensitizers containing saturated and unsaturated polycyclic compounds containing the cyclopentane-2-diazo-1,3-dione structural unit.These compounds have their maximum u.v. absorption at around 248 nm, decompose into polar products upon irradiation, and can be used as photosensitizers in positive deep u.v. or excimer laser (248 nm) lithography. They are most preferably useful with deep u.v. transparent resins for forming photoresists.

Abstract: The invention is a polyester and a method for producing a polyester filament which has a combination of flame resistance and low pilling properties. The method comprises forming a polyester polymer from a mixture of two polymers, the first compound being the reaction product of terephthalic acid or dimethyl terephthalate, ethylene glycol, and an oxysilicon compound and the second compound being the reaction product of terephthalic acid or dimethyl terephthalate, ethylene glycol and a phosphinic acid in the amount between 0.5 and 20 mole percent of the terephthalate acid and monomer. In particular, the invention also comprises the enhanced fiber formed by the process, as well as the fabrics having a pilling of about 3 to less than 5 as measured in accordance with ASTM D-3512-82.

Abstract: A process for the preparation of 2,2-diorgano-3-arylpropionic acids is disclosed by the carbonylation of corresponding 2,2-diorgano-1-aryl ethanol in the presence of a Lewis acid catalyst. Furthermore, a process for the production of 2,2-diorgano-3-arylpropionic esters is disclosed by reacting a corresponding 2,2-diorgano-1-aryl ethanol with carbon monoxide and an alcohol in the presence of a Lewis acid catalyst.

Abstract: Molding compositions having improved flexibility are made from blends of segmented copolyester elastomers and copolymers of ethylene and ethyl acrylate.

Abstract: A cassette case for rotatably accommodating a flexible magnetic disc includes joined upper and lower cassette case halves. At least the upper cassette case half (and preferably both cassette halves) is formed of a molded plastics material, preferably an oxymethylene polymer. A wear button which is centrally located with respect to, and projects outwardly from, an interior surface of the upper cassette half, includes an integrally molded wear button. The wear button provides a low friction surface against which a drive spindle of a magnetic recording/reproducing apparatus bears when the cassette case (and its associated flexible magnetic disc) are placed into service. The wear button is most preferably in the form of a smooth convexly arcuate surface so as to minimize the contact area with the drive spindle, which thereby further contributes to its low friction characteristics.

Abstract: This invention is that of an azo pigment composition containing about 1 to 10 percent by weight of a nonionic alkyl polyglycoside dispersing agent. The polyglycosides useful in the invention have the general formulae:C.sub.n H.sub.2n+1 M (C.sub.6 H.sub.10 O.sub.5).sub.x Hwherein: M is an oxygen, sulfur, nitrogen phosphorous or silicon atom; n is an integer from 8 to 18, preferably 8 to 11 and X represents the number average degree of polymerization having a numerical value from about 1 to about 2. These azo pigment compositions are prepared by conducting the azo pigment coupling reaction in the presence of said alkyl polyglycoside. The resulting pigment exhibit superior application properties in water based ink systems.

Abstract: Arylalkylamines (as the hydrochloride salt), e.g. tyramine hydrochloride, are prepared by hydrogenating substituted or unsubstituted aryl-.alpha.-oximinoalkyl ketones, e.g. p-hydroxyisonitroacetophenone, in either in an aqueous reaction medium comprising hydrochloric acid, essentially without the presence of a lower alkyl alcohol in said reaction medium, or in an aqueous reaction medium comprising water, hydrochloric acid, and a lower alkyl alcohol, wherein the alcohol comprises less than about 90% by volume of the reaction medium. A substituent on the aryl portion of the aryl-.alpha.-oximinoalkyl ketone must be on a position which activates the aromatic ring.

Abstract: An improved process for the production of cellulose ester fibrets wherein a thickened slurry of the fibrets in a liquid mixture of a solvent for the fibrets and a fibret non-solvent is contacted with saturated steam in the separation of the solvent from the fibrets.