摘要:
A process for recovering an esterified cellulose ether from a reaction product mixture obtained from a reaction of (a) a cellulose ether with (b) an aliphatic monocarboxylic acid anhydride or a di- or tricarboxylic acid anhydride or a combination of an aliphatic monocarboxylic acid anhydride and a di- or tricarboxylic acid anhydride, comprises the steps of (i) contacting the reaction product mixture with an aqueous liquid to precipitate the esterified cellulose ether from the reaction product mixture, (ii) isolating the precipitated esterified cellulose ether from the mixture obtained in step (i), and (iii) suspending the isolated esterified cellulose ether in an aqueous liquid to provide a suspension having a temperature of at least 28° C., and (iv) recovering the esterified cellulose ether from the suspension of step (iii).
摘要:
In a first aspect, organic coating compositions are provided, particularly spin-on antireflective coating compositions, that contain a polyester resin component. In a further aspect, coating compositions are provided that contain a resin component obtained by polymerization of a multi-hydroxy compound. Coating compositions of the invention are particularly useful employed in combination with an overcoated photoresist layer to manufacture integrated circuits.
摘要:
A method and a material for creating an antireflective coating on an integrated circuit. A preferred embodiment comprises applying a dark polymer material on a reflective surface, curing the dark polymer material, and roughening a top surface of the dark polymer material. The roughening can be achieved by ashing the dark polymer material in an ash chamber. The dark polymer material, preferably a black matrix resin or a polyimide black matrix resin, when ashed in an oxygen rich atmosphere for a short period of time, forms a surface that is capable of absorbing light as well as randomly refracting light it does not absorb. A protective cap layer may be formed on top of the ashed dark polymer material to provide protection for the dark polymer material.
摘要:
In a first aspect, organic coating compositions are provided, particularly spin-on antireflective coating compositions, that contain a polyester resin component. In a further aspect, coating compositions are provided that contain a resin component obtained by polymerization of a multi-hydroxy compound. Coating compositions of the invention are particularly useful employed in combination with an overcoated photoresist layer to manufacture integrated circuits.
摘要:
The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of polymer sheet between said paper base and said silver halide layer, incorporating a thin tinted polymer layer directly below said silver halide layer.
摘要:
In a photothermographic element comprising a photosensitive layer containing an organic silver salt, a silver halide, and a reducing agent on one surface of a support, and a back layer on the other surface of the support, the outermost back layer is based on a polymer latex binder, and the back layer contains a dye of formula (I) satisfying a specific maximum absorption wavelength relationship. The element produces an image with high Dmax, ultrahigh contrast, satisfactory resolution, and minimized residual color.
摘要:
A radiographic element is disclosed capable of producing a maximum density of at least 3.0 when imagewise exposed and processed in less than 45 seconds. The element includes magenta dye or dyes, including a dye for spectrally sensitizing radiation-sensitive silver halide grains, that leave a residual density at 505 nm of greater than 0.1 when the element is processed. Transmission of red light through the radiographic element when imagewise exposed and processed to produce a viewable image is reduced by the incorporation in at least one of the hydrophilic colloid layers of at least one ionic linear condensation polymer containing a cyan phthalocyanine dye.
摘要:
Novel mordants based upon a polyethyleneimine backbone and either pendant phosphonium or quaternized-nitrogen compounds are disclosed. The mordants find use in stopping or controlling ink-bleeding into ink-jet receptors and photographic films.
摘要:
The novel compounds of formula ##STR1## wherein n and R are as defined in claim 1, are very suitable for use as UV absorbers in layers of photographic materials.
摘要:
Improved radiation-sensitive elements comprise a support; a radiation-sensitive layer; and an auxiliary layer comprising an absorbing amount of an anionic dye, and a synthetic amphoteric polymer comprising: acrylic acid and N,N-dialkylaminoethyl methacrylate; wherein alkyl=methyl or ethyl, the molar ratio of (a):(b).ltoreq.1:1; said polymer has an isoelectric point of 7.0-11.2; and said polymer is present in said auxiliary layer in an amount sufficient to mordant said anionic dye.