摘要:
Benzylpyridinium or benzylammonium salts of a benzenesulfonate anion are useful as a proton-donating curing catalyst in a resinous system capable of curing in the presence of such a catalyst. The catalyst is characterized by its heat-latent nature and thus does not impair the storage stability of the resinous system at an amibient temperature.
摘要:
A resinous composition for coating use which is excellent in weather resistance and in low temperature curing properties, comprising a resin having a resinous acid value based on carboxyl groups derived from its constituting tetrachlorophalic acid of 2 to 8, a resinous acid value based on sulfonic acid groups derived from its constituting sulfophthalic acid of 0.5 to 5, and a functional group capable of reacting with a crosslinking agent to be compounded with the resin. The present resin is useful, in the combination form with a crosslinking agent, as a resinous vehicle of a coating composition which is excellent in curing properties, whether resistance, pigment dispersibility and storage stability and is specifically useful as an intermediate or top coat paint for automobile bodies or the like.
摘要:
A curable resin composition comprises (a) an organic resin containing at least two alkenyl groups per molecule, and havinv a number average molecular weight of 500-100,000, (b) an organohydrogen-polysiloxane containing no less than two Si-H bonds per molecule, and (c) a platinum catalyst. Component (a) is preferably chosen from at least one of acrylic, polyester and epoxy resins. The preferred amount of component (b) is such that there are 0.8-4 hydrogen atoms bonded to silicon atoms per alkenyl group of component (a). The compositions can be cured at low temperatures without shrinking to give a product having good water and chemical resistance, and recoatability.
摘要:
The invention concerns a thermosetting polyester resin capable of forming an anisotropic molten phase comprising a repeating unit of the formula: A-X-B alone, or a combination of the repeating unit of the formula: A-X-B and the repeating unit of the formula: R, adjoining two repeating units being connected each other through an ester bond, in which A represents a mesogenic group defined in the specification, B is a spacer group defined in the specification, X is an ester bond, and R represents bivalent to hexavalent aliphatic, aromatic or alicyclic hydrocarbon residue, the end bondings of the connected repeating units being occupied by OH, COOH or their reactive derivatives and the sum of resinous acid value and OH value being 10 to 200. The invention also provides a powder coating resinous composition containing the abovesaid resin.
摘要:
The invention concerns a thermosetting polyester resin capable of forming an anisotropic molten phase comprising a repeating unit of the formula: A-X-B alone, or a combination of the repeating unit of the formula: A-X-B and the repeating unit of the formula: R, adjoining two repeating units being connected each other through an ester bond, in which A represents a mesogenic group defined in the specification, B is a spacer group defined in the specification, X is an ester bond, and R represents bivalent to hexavalent aliphatic, aromatic or alicyclic hydrocarbon residue, the end bondings of the connected repeating units being occupied by OH, COOH or their reactive derivatives and the sum of resinous acid value and OH value being 10 to 200. The invention also provides a powder coating resinous composition containing the abovesaid resin.
摘要:
The present application provides a compound represented by the formula (1); G(̵X- - -OR₁) n (I) wherein G is a residue of an active hydrogen-containing compound G-(X-H) n , or an alkyl, aryl, aralkyl, alkenyl, alkynyl group having 3 to 20 carbon atoms which may contain oxygen or nitrogen atoms, or a polymeric compound residue, X is a oxygen atom or -CH₂, n is an integer of 3 to 1,000, R₁ is a hydrogen atom, a C₁-C₅ alkyl group or an aryl group, and a production thereof.
摘要:
A process for preparing a polymerizable compound in which:
R, is a hydrogen atom or a methyl group; A is a group of the formula:- [in which X is a C 2 -C 4 alkylene group or a group of the formula:
(in which the groups R 4 are the same or are different and each is a C 1 -C 4 alkyl group and Rs is a group in which R 7 is a C 2 -C 4 alkylene group, Rs is a C 2 -C 7 alkylene group and m is 0, 1, 2, 3, or 4); R 2 is a hydrogen atom or a C 1 -C 10 alkyl group; and R 3 is a qroup: (in which R 7 , R s and m have the meanings defined above and R 6 is a C 1 -C 4 alkylene group)]; Y is a group of the formula: -CH 2 -CH 2 -0-,
(in which Z is a C 2 -C 7 alkylene group); p is an integer of from 1 to 100; and q is an integer of from 1 to 5;
which process comprises the steps of ring-opening addition polymerizing 1 to 100 moles of β-methyl-δ-valerolactone with one mole of a compound, having both a polymerizable double bond and a hydroxyl group, of the formula: (in which R 1 and A have the meanings defined above) in the presence of a ring-opening addition polymerization catalyst; and then effecting a ring-opening addition of 1 to 5 moles of alkyleneoxide or a cyclic ester to the thus obtained compound. The invention also provides a similar process (omitting the second ring opening step) for the preparation of compounds wherein q is 0. In addition the invention provides certain specific classes of compounds of formula (2) and, further, coating composition containing acrylic resins derived from the polymerizable compounds obtained in accordance with the invention.
摘要:
The invention provide a coating composition comprising
(a) a film-forming polymer having a functional group which is reactive with the under-mentioned crosslinking agent, (b) an organic liquid diluent ,and (c) a crosslinking agent , which is characterized by that said film-forming polymer is an acrylic homo - or co-polymer having at least one side chain of the formula: in which n is a positive number of 3 - 50. contains metallic or non-metallic pigment ,and also a coating composition comprising the abovementioned
(a),(b),(c) and (d) crosslinked polymer microparticles obtained by an emulsion polymerization of two or more ethylenically unsaturated monomers in the presence of a resin having in its molecule a group of the formula: in which R is a substituted or unsubstituted alkylene having 1 to 6 carbon atoms or phenylene and Y is -COOH or -S0 3 H.
These compositions are specifically useful as a top coat for automobile body, appliances or the like.
摘要翻译:本发明提供了一种涂料组合物,其包含(a)具有可与下述交联剂反应的官能团的成膜聚合物,(b)有机液体稀释剂和(c)交联剂,其特征在于: 所述成膜聚合物是具有下式的至少一个侧链的丙烯酸均聚物或共聚物:其中n为3〜50的正数。含有金属或非金属颜料,以及涂料组合物 (a),(b),(c)和(d)交联聚合物微粒,所述交联聚合物微粒通过在分子中具有下式基团的树脂存在下通过两种或更多种烯属不饱和单体的乳液聚合获得: 其中R是具有1至6个碳原子的取代或未取代的亚烷基或亚苯基,并且Y是-COOH或-SO 3 H. 这些组合物特别用作汽车车身,器具等的面漆。