摘要:
The invention relates to polyfunctionally reactive polymeric substances which contain at least two structural units of the general formulae (I) and/or (II) in the molecule and whose polymer backbone linkages are C—C bonds, ether bonds, urethane bonds, amide bonds, ketone bonds or combinations thereof. The substances are useful as binders for various applications.
摘要:
A process is described for preparing radiation-crosslinkable polymeric acrylates and methacrylates, which involves reacting an acrylate or methacrylate copolymer containing units having a reactive side group with a compound that contains a group which is capable of reacting with the reactive side group and also a group which is capable of forming free radicals under the action of actinic radiation. The preparation of the modified, photoactive polymers by polymer-analogous reaction makes it possible to do without the laborious handling of aggressive, specially synthesized monomers, especially acrylic esters. The products of the process can be employed widely as radiation-curable coating materials.
摘要:
The invention comprises a process for impregnating components with polymerizable impregnants which are liquid at room temperature or can be liquefied by heating and are cured by combined use of heat and high-energy radiation, wherein the components are impregnated at ambient temperature or in a preheated state and, after impregnation, are heated in the impregnant until partial gelation occurs, are treated with high-energy radiation before full curing and are then fully cured by thermal means.
摘要:
The invention relates to the use of reactive prepolymeric organic compounds, containing structural units having at least one readily abstractable hydrogen with a bond energy of not more than 397 kJ/-mol and having at least one ethylenic double bond, for crosslinking, with or without free-radical initiators, by means of heat, high-energy radiation or heat and high-energy radiation.
摘要:
The invention relates to a method of coating articles with powder coatings which contain polymers, are applied to the surface of the substrate to be coated, are melted and are crosslinked by UV irradiation, wherein the polymers employed are copolymers ofa) at least one monomer of the general formula (I) ##STR1## where R.sup.1 =H or CH.sub.3 and R.sup.2 =H, C.sub.n H.sub.2n+1 where n=from 1 to 30, or is an alicyclic, araliphatic or heterocyclic radical, hydroxyalkyl, alkoxyalkyl, glycidyl or aminoalkyl, or of the general formula (II) ##STR2## where R.sup.1 =H or CH.sub.3 and where R.sup.3 and R.sup.4 may be identical to or different from one another and are H, CH.sub.2 OH, C.sub.n H.sub.2n+1 where n=1 to 30 or CH.sub.2 OR.sup.5 where R.sup.5 =C.sub.m H.sub.2m+1 where m=1 to 12, andb) at least one copolymerizable, ethylenically unsaturated organic compound of the general formula (A) ##STR3## where R' and R" can be identical to or different from one another and are H, C.sub.p H.sub.2p+1 where p=1 to 6, cycloalkyl, aryl or aralkyl and R'" is acryloyl, methacryloyl, ethacryloyl or cinnamoyl, it being possible for this compound to be replaced in part by one or more other copolymerizable, ethylenically unsaturated organic compounds which are different from (a).
摘要:
The invention relates to a method of coating articles with powder coatings which contain polymers and are applied to the surface of the substrate to be coated, are melted and are crosslinked by UV radiation, the polymers employed being copolymers of(a) at least one monomer of the general formula (I)CH.sub.2 .dbd.C(R.sup.1)--CO--OR.sup.2 (I) whereR.sup.1 =H or CH.sub.3 andR.sup.2 =H, C.sub.n H.sub.2n+1 where n=from 1 to 30, or is an alicyclic, araliphatic or heterocyclic radical, hydroxyalkyl, alkoxyalkyl, glycidyl or aminoalkyl, or of the general formula IICH.sub.2 .dbd.C(R.sup.1)--CO--NR.sup.3 R.sup.4 (II) where R.sup.3 =H or CH.sub.3 and where R.sup.3 and R.sup.4 may be identical to or different from one another and are H, CH.sub.2 OH, C.sub.n H.sub.2n+1 where n=1 to 30(b) at least one copolymerizable, ethylenically unsaturated, organic compound which is different from (a)and(c) at least one copolymerizable, ethylenically unsaturated, aromatic or partially aromatic ketone which is capable of abstracting hydrogen in the excited triplet state.
摘要翻译:本发明涉及一种涂覆具有粉末涂料的制品的方法,所述粉末涂料含有聚合物并被施加到待涂覆的基材的表面上,被熔化并通过UV辐射交联,所使用的聚合物是(a)至少一种单体 通式(I)CH 2 = C(R 1)-CO-OR 2(I)其中R 1 = H或CH 3且R 2 = H,C n H 2n + 1其中n = 1至30,或为脂环族,芳脂族或杂环 基团,羟基烷基,烷氧基烷基,缩水甘油基或氨基烷基,或通式为IICH2 = C(R1)-CO-NR3R4(Ⅱ),其中R3 = H或CH3,其中R3和R4可以彼此相同或不同, H,CH 2 OH,C n H 2n + 1其中n = 1-30(b)至少一种可共聚的烯属不饱和有机化合物,其不同于(a)和(c)至少一种可共聚的烯属不饱和,芳族或部分芳族酮 其能够提取激发三重态的氢。
摘要:
Use of a mixture of from 5 to 95% by weight of an azidosilane of the formulaN.sub.3 --R.sup.3 --Si--R.sup.1.sub.n (OR.sup.2).sub.3-n Iwhere R.sup.1 is C.sub.1 -C.sub.3 -alkyl, phenyl, benzyl or tolyl, R.sup.2 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkoxyalkyl, phenyl or benzyl, R.sup.3 is C.sub.1 -C.sub.8 -alkylene, which may be interrupted by oxygen, sulfur or --(N--R.sup.4)-- in which R.sup.4 is hydrogen, methyl, ethyl or phenyl, and n is 0, 1 or 2, and from 5 to 95% by weight of an aminoalkoxysilane of the formulaH.sub.2 N--R.sup.5 --Si--R.sup.6.sub.m (OR.sup.7).sub.3-m IIwhere R.sup.5 is C.sub.1 -C.sub.6 -alkylene, C.sub.5 -C.sub.6 -cycloalkylene or C.sub.5 -C.sub.6 -arylene, each of which may be additionally substituted by one or two C.sub.1 -C.sub.3 -alkyl groups, and R.sup.6 and R.sup.7, independently of one another, are C.sub.1 -C.sub.6 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl, each of which may likewise be additionally substituted by one or two C.sub.1 -C.sub.3 -alkyl groups, and m may be 0, 1 or 2, as an adhesion promoter between polycondensates containing, as structural units, heterocyclic ring systems containing nitrogen atoms, or precursors of these polycondensates, and inorganic substrates.
摘要:
Plastisols and organosols which have a long shelf life at room temperature, are based on a mixture of a finely divided synthetic resin with a plasticizer and may or may not contain additional pigments, fillers, volatile organic solvents and other assistants are prepared by a process in which an inert or reactive protective colloid or emulsifier, or a mixture of these, is added to a dispersion of a finely divided synthetic resin in a plasticizer, the dispersion as such not having a long shelf life at room temperature.These plastisols can be used as coating materials, sealants and adhesives.
摘要:
Reinforced cellular or noncellular molded polyurethane parts are prepared by heating a mixture of reinforcing materials and a heat-curable composition of polyisocyanates and polyols in an open or closed mold, said composition being storage-stable at room temperature and containing, optionally, auxiliaries and additives. In said composition, the polyisocyanate is dispersed in the form of discreet particles having particle diameters from 0.1 to 150 .mu.m in the polyol and the polyisocyanate particles are deactivated on their surfaces such that from 0.01 to 20 equivalent percent of the total available isocyanate groups are deactivated and such that the ratio of free isocyanate groups to hydroxyl groups is from 0.7:1 to 2.5:1.The polyurethane molded parts are suitable for use as self-supporting trim parts, reinforcement parts, or molded parts for various applications.
摘要:
Plastisols useful for automobile undercoatings, anti-noise compositions, adhesives, sealing compositions and coatings for untreated, pretreated, phosphated, primed and prelacquered metal bases are improved by the addition of coke dust and coal dust fillers. The carbon dust fillers have a particle size of about 0.5 to 1000 microns and they are used in a concentration of about 9 to 90% by weight based on the total weight of plastisol and carbon dust. The carbon dust filled plastisols have a specific gravity of about 1.1 to 1.3.