摘要:
A process for stabilizing bismuth vanadate pigments against attack by hydrochloric acid by treating said pigments with a metal phosphate, which process comprises treating an aqueous suspension of a bismuth vanadate pigment with 2-20% by weight, based on said pigment, of an orthophosphate selected from the group consisting of calcium, magnesium, aluminium, zirconium and titanium orthophosphate, of a mixture of such orthophosphates with one another or of such orthophosphates with zinc orthophosphate, with stirring, in the temperature range from 20.degree. to 100.degree. C. and in the pH range from 2 to 8, which orthophosphate is precipitated in situ from the appropriate metal salt of a strong mineral acid and orthophosphoric acid or from an alkali metal salt thereof, and isolating the resultant product by conventional methods.The pigments so obtained have excellent resistance to hydrochloric acid.
摘要:
A process for warp-free pigmenting of polyolefins comprising(A)(i) adsorbing a polyvinyl alcohol film onto the surface of an organic pigment particle,(ii) coating the surface of the polyvinyl alcohol coated organic pigment particle with one or more films of linear or branched homopolymers or copolymers selected from the group consisting of acrylic polymers based on acrylic acid, methacrylic acid, alkyl esters of acrylic or methacrylic acid and mixtures thereof, and(iii) admixing said pigment particles with a polyolefin; or(B)(i) adsorbing a film of hydrolysed zirconium acetylacetonate onto the surface of an organic ##STR1## in which R is methyl or ethyl and m is a number from 1 to 6, onto the surface of the hydrolysed zirconium acetylacetonate coated organic pigment particle, (ii) coating the surface of organic pigment particle coated in accordance with step (B)(i) with one or more films of linear or branched homopolymers or copolymers selected from the group consisting of acrylic polymers based on acrylic acid, methacrylic acid, alkyl esters of acrylic or methacrylic acid and mixtures thereof, and(iii) admixing said pigment particles with a polyolefin; or(C)(i) coating the surface of an organic pigment particle with one or more films or linear or branched homopolymers or copolymers of polyvinyl alcohols, and(ii) admixing said pigment particles with a polyolefin;said organic pigment particle being selected from the group consisting of azo, diketopyrrolopyrrole, perylene, quinacridone, phthalocyanine, perinone, quinophthalone, isoindolinone, isoindoline, benzimidazolone, dioxazine, anthraquinone, thioindigo, methine, azomethine and metal complex pigments.
摘要:
Diketopyrrolopyrrole of the formula ##STR1## in its .beta.-modification and in its .gamma.-modification. Both the .beta.-modification and the .gamma.-modification are suitable as pigments for coloring high-molecular weight organic material. In comparison to the .alpha.-modification, the .beta.-modification shows a shift in shade towards yellowish-red. The .gamma.-modification gives brilliant orange colorations.
摘要:
Diketopyrrolopyrrole of the formula ##STR1## in its .beta.-modification. The new .beta.-modification is suitable as a pigment for coloring high-molecular weight organic material and shows, in comparison to the .alpha.-modification, a shift in shade towards yellowish-red.
摘要:
Process for mass coloring high molecular weight organic material, which comprises using a compound of the general formula (I)(Bi,A)(V,D)O.sub.4 (I)in a tetragonal, scheelitelike crystal structure, in which A is an alkaline earth metal, Zn or a mixture thereof, D is Mo, W or a mixture thereof, and the molar ratios A:Bi and D:V are between 0.1 and 0.4 and 0 and 0.4 respectively.Processes for preparing the compounds of the formula (I) are likewise described.
摘要:
A polymer comprising i) a synthetic polymeric component that has been formed from an ethylenically unsaturated water-soluble or potentially water-soluble monomer and an ethylenically unsaturated monomer carrying a reactive group, wherein the reactive group is directly reactive with a cellulose binding domain protein; and ii) a protein component consisting of a cellulose binding domain protein, wherein the cellulose binding domain protein. The polymer is particularly suitable as a dry strength resin in a paper making process. It can also be used as a wet strength resin, internal sizing agent or surface sizing agent.
摘要:
A polymer comprising i) a synthetic polymeric component that has been formed from an ethylenically unsaturated water-soluble or potentially water-soluble monomer and an ethylenically unsaturated monomer carrying a reactive group, wherein the reactive group is directly reactive with a cellulose binding domain protein; and ii) a protein component consisting of a cellulose binding domain protein, wherein the cellulose binding domain protein. The polymer is particularly suitable as a dry strength resin in a paper making process. It can also be used as a wet strength resin, internal sizing agent or surface sizing agent.
摘要:
The invention relates to a process for coating a surface through graft polymerization, characterized in that before graft polymerization, the surface is modified, in the presence of an amine of formula: wherein R1 is hydrogen or a group R4, R2 and R3 are each independently a group R4, and R4 is [-1,2-C2-C3alkylen-T-]n-H wherein T is O or NH and n is a number from 1 to 3, by a compound having a functional group: wherein R5 to R7 are each C1-C4alkyl. The amount of amine is preferably from 5 to 500 g/m2 of surface of the substrate particle. The amount of the trialkoxysilane compound is preferably from 0.1 to 2 g/m2 of surface of the substrate particle. The process for coating a surface is particularly useful for effect pigments.
摘要翻译:本发明涉及通过接枝聚合涂覆表面的方法,其特征在于在接枝聚合之前,在下式胺的存在下改性表面:其中R 1是氢或基团R 4,R 2和R 3各自独立地是 R4和R4是具有官能团的化合物,其中T是O或NH,n是1至3的数[1,2-C2-C3烷基-T-] nH,其中R5至R7是 每个C 1 -C 4烷基。 胺的量优选为基材颗粒表面的5至500g / m 2。 三烷氧基硅烷化合物的量优选为基板颗粒表面的0.1〜2g / m 2。 涂覆表面的方法对于效果颜料特别有用。
摘要:
A pigment composition, which comprises70-95% by weight of a pigment of formula ##STR1## 5-15% by weight of at least one C.sub.2 -C.sub.16 alkylenedicarboxylic acid-di-C.sub.1 -C.sub.12 alkyl ester; and0-15% by weight of at least one C.sub.12 -C.sub.24 fatty acid ester of polyhydroxy-C.sub.2 -C.sub.12 alkane;each based on the total weight of the pigment composition.Also claimed is a process for the preparation of this pigment composition and its use for mass-colouring in particular high molecular weight organic materials which can be moulded as plastics or melts.The products obtained are distinguished by an improved low shear dispersibility effect at high tinctorial strength.
摘要:
The instant invention relates to a process for the warp-free pigmenting of polyolefins, which process comprises admixing coated pigment particles with a polyolefin, wherein said coated pigment particles are prepared by coating organic pigment particles with one or more films of a preformed polymer by adsorption thereon of from 1 to 10% by weight of the polymer, based on the pigment particles, at room temperature, the polymer being selected from the group consisting of polyvinylpyrrolidone homopolymers and copolymers.