摘要:
Positive and negative working radiation sensitive mixtures suitable in particular for producing relief patterns contain a polymeric binder and an organic compound whose solubility in an aqueous alkaline developer is increased by the action of acid and which contains at least one acid cleavable group and also an additional group which upon irradiation forms a strong acid, the polymeric binders being reaction products of polymers that contain phenolic hydroxyl groups with dihydropyran or with alkyl vinyl ethers.
摘要:
An aqueous developer solution contains, as a water-soluble basic compound, a compound of the general formula (I) ##STR1## where R.sup.1 to R.sup.5 are identical or different and are each H, OH, hydroxyalkyl, alkoxy or alkyl.It is suitable for developing positive-working photoresists.
摘要:
The invention relates to a radiation-sensitive mixture essentially consisting of(a) a water-insoluble binder or binder mixture which is soluble in aqueous alkaline solutions,(b) a compound which upon irradiation forms a strong acid and(c) one or more organic compounds which inhibit the solubility of (a) in aqueous alkaline solutions,wherein the organic compound (c) is a .beta.-ketoacide ester.This radiation-sensitive mixture may be used to prepare photoresists.
摘要:
Copolymers containing from 5 to 50 mol % of monomers having o-nitrocarbinol ester groups, from 94 to 30 mol % of methacrylonitrile, from 1 to 20 mol % of olefinically unsaturated copolymerizable carboxylic acid and from 0 to 30 mol % of other copolymerizable monomers as copolymerized units are useful for fabricating semiconductor components.
摘要:
Copolymers containing from 5 to 50 mol % of monomers having o-nitrocarbinol ester groups, from 95 to 50 mol % of O-substituted p-hydroxystyrene and from 0 to 30 mol % of other copolymerizable monomers are useful for producing positive-working photoresists and light-sensitive coating materials.
摘要:
Polyurethane foams having a density of less than 200 g/l are prepared by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms reactive with isocyanate groups, the polyisocyanates a) being aromatic di- or polyisocyanates and the compounds b) having at least two hydrogen atoms reactive with isocyanate groups containing at least one acrylate polyol.
摘要:
Solid compositions comprising (A) at least one solid (meth)acrylate copolymer with a number-average molecular weight of from 850 to 10 000 and a molecular weight polydispersity Mw/Mn of from 1.0 to 5.0, containing at least one group (a) having at least one bond which can be activated with actinic radiation; and (B) at least one solid compound comprising a parent structure and, attached thereto, on average per molecule more than one group (a) having at least one bond which can be activated with actinic radiation; and their use as coating materials, adhesives or sealing compounds which can be crosslinked thermally and/or with actinic radiation, or for preparing coating materials, adhesives or sealing compounds which can be crosslinked thermally and/or with actinic radiation.
摘要:
The present invention relates to an aqueous dispersion comprising a solid pulverulent component A and an aqueous component B, said component A comprising a UV-curable powder coating material.
摘要:
A radiation-sensitive mixture essentially consisting of (a) a water-insoluble binder or binder mixture and (b) a compound which forms a strong acid on exposure to radiation, component (a) being a phenolic resin in which some or all of the phenolic hydroxyl groups have been replaced with groups (IA) or (IB) ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each alkyl or R.sup.1 together with R.sup.2 forms a ring and X is CH.sub.2, O, S, SO.sub.2 or NR.sup.4, is suitable for the production of relief structures.
摘要:
An emergency ring of elastic material for a vehicle wheel having a one-piece deep bed rim comprises a one-piece annular support body, which via support rings are supported exclusively on the rim bed of the wheel and is spaced apart from at least one side wall region or of a pneumatic tire. Reinforcement inlays are disposed radially such that there is only relatively little compressible elastic material within the reinforcement inlays. High security against rotation of the emergency ring relative to the rim is thereby assured. Moreover, the emergency ring is easily mounted and provides great security against a tire being thrown off, even when cornering with tires with low air pressure.