摘要:
Curable compositions comprise:(A) an epoxide resin(B) as latent curing agent for (A), dicyandiamide or a polycarboxylic acid hydrazide, and(C) as cure accelerator dispersed as a powder in the composition, a Mannich base of a polymeric phenol.The compositions are particularly useful as adhesives and sealants.
摘要:
Carboxylate salts, prepared by a Mannich reaction and useful in the preparation of water-borne coatings, have the general formula ##STR1## where R.sup.1 represents an aliphatic, aromatic, or araliphatic divalent group which may contain a further --COO.sup.- M.sup.+ ; R.sup.2 represents --H, --CH(R.sup.3)N(R.sup.10)R.sup.1 COO.sup.- M.sup.+, or alkyl which may be substituted by --COO.sup.- M.sup.+, --CH(R.sup.3)OH, or --CH(R.sup.3)OR.sup.8, R.sup.1 and R.sup.2 containing together not more than one --COO.sup.- M.sup.+ ; R.sup.3 represents --H or alkyl; each R.sup.4 represents --H, halogen, alkyl, or alkenyl; R.sup.5 represents --H, halogen, alkyl, alkenyl, or a group --CH(R.sup.3)OH, --CH(R.sup.3)OR.sup.8, or --CHR.sup.3 --NR.sup.2 --R.sup.1 --COO.sup.- M.sup.+ ; either R.sup.6 represents --H and R.sup.7 represents the residue of a polyepoxide, preferably of average mol. wt. 1000-5000, or R.sup.6 represents a covalent bond linked to the group R.sup.7, and R.sup.7, together with the indicated hydroxyethylene group, forms a cycloaliphatic ring; R.sup.8 represents alkyl or alkoxyalkyl; R.sup.9 denotes the residue of an optional terminating group; R.sup.10 denotes --H, --COO.sup.- M.sup.+, or an alkyl group which may be substituted by --COO.sup.- M.sup.+, --CH(R.sup.3)OH, or --OCH(R.sup.3)OR.sup.8 ; m represents 1, 2, 3, or 4; n and p represent zero or 1, X represents alkylene, carbonyl, sulfonyl, oxygen, sulfur, or a valence bond; and M.sup.+ represents a hydrogen ion or a monovalent cation derived from an alkali metal, ammonia, or an amine, at least 25% of the ions being a said monovalent cation.Compositions comprising these salts and, if required, a phenoplast, an aminoplast, or blocked polyisocyanate, are stable when dispersed in water, usually with the aid of a minor amount of an organic solvent, and may be used to form protective films, especially for metal containers.
摘要:
A positive photoresist is electrodeposited onto a substrate, exposed to actinic radiation in a predetermined pattern, and then exposed areas are removed by contact with a developer.When the substrate is a metal-faced laminate, the exposed metal surface may be etched and the residual electrodeposited layer removed by contact with a suitable solvent, optionally after a second, general, exposure to actinic radiation.Suitable electrodepositable positive photoresists include o-nitrocarbinol esters and o-nitrophenyl acetals, their polyesters and end-capped derivatives and quinone diazide sulphonyl esters of phenolic novolaks, having salt-forming groups in the molecule, especially carboxylic acid and amine groups.The process is suitable for the production of printing plates and printed circuits, especially circuits on both sides of a liminate sheet linked conductively through metal-lined holes in the sheet.
摘要:
Positive images are produced by (i) exposing to actinic radiation in a predetermined pattern a composition supported on a substrate, which composition comprises a film-forming organic material and a substance which releases a sulphonic acid on exposure to actinic radiation, thereby rendering the composition more soluble in the developer in the exposed areas than the unexposed areas, and (ii) treating the composition with the aqueous base developer to remove the unexposed areas. The image-forming process may be used in the production of printing plates and electrical circuits.
摘要:
Water-dilutable resinous products are obtained by reacting(A) a resin having at least one phenolic hydroxyl group and a free position ortho and/or para to a phenolic hydroxyl group, and containing a residue formed by polymerization of a vinyl monomer in the resin or in a precursor thereof,(B) an aldehyde, and(C) sulphurous acid or an organic acid containing a primary or secondary amino group or a mercaptan group and a carboxylic, sulphonic or phosphonic acid group, or a water-soluble salt thereof.Aqueous compositions containing the resinous products and, if required, and aminoplast, a phenoplast or a blocked polyisocyanate, usually together with a minor amount of an organic solvent, are useful in the formation of surface coatings.
摘要:
A process for the formation of an image comprises(i) electrodepositing on a conductive surface a layer of a quinone diazide positive photoresist,(ii) subjecting the layer to radiation in a predetermined pattern,(iii) heating the layer such that areas thereof exposed in stage (ii) are rendered insoluble in an aqueous base developer,(iv) subjecting the layer to radiation such that the areas not exposed in stage (ii) are rendered more soluble in an aqueous base developer than the areas rendered insoluble in stage (iii) and(v) removing the areas not exposed in stage (ii) by treatment with an aqueous base developer.The process is useful in the production of printing plates and printed circuits.
摘要:
An electrodepositable photosensitive modified phenolic novolak resin of general formula ##STR1## where Ar.sup.1 represents a divalent aromatic group linked through aromatic carbon atoms to the indicated groups --OR.sup.2 and --CH(R.sup.1)--,Ar.sup.2 represents a trivalent aromatic group linked through aromatic carbon atoms to the indicated groups --OR.sup.2 and --CH(R.sup.1)--,R.sup.1 represents a hydrogen atom or an alkyl, aryl or carboxyl group,R.sup.2 represents a hydrogen atom, an alkyl group which may be substituted by a hydroxyl or alkoxy group, or a group of formula --CO--R.sup.3 --COOH, --SO.sub.2 R.sup.4, --COR.sup.5 or --SO.sub.2 R.sup.5, at least 1% of the groups R.sup.2 representing a group --CO--R.sup.3 --COOH and at least 4% of the groups R.sup.2 representing a group --SO.sub.2 R.sup.4,R.sup.3 denotes a divalent aliphatic, cycloaliphatic, aromatic or araliphatic group,R.sup.4 denotes a 1,2-benzoquinone diazide group or 1,2-naphthoquinone diazide groupR.sup.5 denotes a carboxyl-free monovalent group, andn denotes zero or an integer of 1 to 20.The resins are useful in printed circuit manufacture.
摘要翻译:一种通式为其中Ar1表示通过芳香族碳原子连接到指定基团-OR 2和-CH(R 1) - 的二价芳族基团的可电沉积光敏改性酚醛清漆树脂,Ar2表示通过芳族碳连接的三价芳族基团 原子与指定基团-OR2和-CH(R1) - ,R1表示氢原子或烷基,芳基或羧基,R2表示氢原子,可被羟基或烷氧基取代的烷基,或 式-CO-R3-COOH,-SO2R4,-COR5或-SO2R5的基团,代表-CO-R3-COOH基团的基团的至少1%和至少4%的基团R 2代表基团 - SO 2 R 4,R 3表示二价脂肪族,脂环族,芳香族或芳脂族基团,R4表示1,2-苯醌二叠氮基或1,2-萘醌二叠氮基,R5表示无羧基的一价基,n表示0或整数 该树脂可用于印刷电路制造 回覆。
摘要:
A process for the formation of an image comprises(i) electrodepositing on a conductive surface a photosensitive film from an aqueous composition which is a solution or dispersion comprising a mixture of (A) a photosensitive o-quinone diazide such as an o-naphthoquinone diazide sulfonyl ester of a phenol, and (B) an electrodepositable film-forming resin such as a reaction product of a novolak resin, formaldehyde and diethanolamine in (C) an aqueous medium, the composition being substantially free from a resin having both a quinone diazide residue and a carboxyl, phosphonic or sulfonic acid group or amino group in the same molecule,(ii) subjecting the electrodeposited film to radiation in a predetermined pattern, such that exposed areas of the film become more soluble in aqueous base than unexposed areas, and(iii) removing the exposed areas by treatment with an aqueous base.The process is useful in the production of printing plates and printed circuits.
摘要:
A process for the formation of an image comprises(i) applying to a substrate a layer of a liquid composition comprising(A) a residue which is cationically polymerizable or polymerizable by means of free radicals,(B) a radiation-activated polymerization initiator for (A) and(C) a radiation-solubilizable residue,(ii) subjecting the composition to radiation having a wavelength at which (B) is activated but at which (C) is not substantially activated, optionally followed by heating, thereby polymerizing (A) such that the layer of liquid composition is solidified,(iii) subjecting the solidified layer in a predetermined pattern to radiation having a wavelength which is different from that of the radiation used in stage (ii) and at which the residue (C) is activated, such that the solidified layer is rendered more soluble in a developer in exposed areas than in unexposed areas, and(iv) removing the exposed areas by treatment with a developer.The process is useful in the production of printing plates and printed circuits.
摘要:
The present invention provides a method for making a metallic pattern on a substrate having a surface comprising bare metal in predetermined areas and metal coated by a resist in remaining areas which comprises (i) protecting the bare metal by electrodepositing a resin thereon, (ii) while leaving the electrodeposited resin substantially uncured, removing the resist from said remaining areas using a solvent which will not remove the electrodeposited resin, thereby exposing metal in said remaining areas, (iii) etching the metal exposed in (ii) using an etchant which does not remove the electrodeposited resin, and (iv) removing the electrodeposited resin with a suitable solvent.