摘要:
A curable coating composition with holdout capability, and methods of use thereof, useful in providing a chip resistant two-tone finish in a reduced number of coating steps and curing cycles, which contains a hydroxyl-functional polyester resin, or a plurality of hydroxyl-functional polyester resins, with an average hydroxyl functionality of at least 2.1, a hydroxyl number of 75 to 400 mg KOH/g, a number average molecular weight of 1,000 to 10,000, an acid number of 1 to 30; a curing agent; and, a barium sulfate pigment This invention is also directed to method for coating a substrate with the above coating composition. In one embodiment, the method comprises (1) applying a holdout capable chip resistant primer coating composition of the forgoing character to an accent area of a electrodeposition primed substrate, (2) applying a primer surfacer coating composition to an adjacent non-accent area of the substrate, (3) applying an accent color basecoating composition wet-on-wet to the chip resistant primer coating composition in the accent area, (4) curing the composite coated substrate in a first bake, (5) covering the accent area with a protective membrane, (6) applying a main color basecoating composition over the unmasked area, (7) removing the protective membrane from the accent area, (8) applying a clear coating composition wet-on-wet to all faces of the substrate, and then (9) curing the composite two-toned coated substrate in a second bake, is also claimed. Further claimed is a substrate coated by the aforementioned coating and methods.
摘要:
An improved urethane reactive hot-melt adhesive is provided that improves the green strength of bonded joints is provided. Also provided are an improved method of bonding articles together with such an adhesive and improved composite articles bonded together with such an adhesive.
摘要:
The present invention provides electrically conductive and flexible primer compositions that harden to form conductive materials under room temperature or low bake temperature curing conditions. The primer composition contains solvents and 40-75% by weight of film forming binder and pigments in an overall pigment to binder weight ratio of about 1:100 to 100:100; wherein the binder contains (A) a flexible hydroxy containing polyester resin and (B) an organic polyisocyanate crosslinking agent; and wherein the pigments include electrically conductive pigments in a pigment to binder weight ratio of about 1:100 to 130:100 and the electrically conductive pigments consists essentially of a combination of graphite and conductive carbon black pigments in a graphite to carbon black weight ratio of about 120:1 to 1:1, and the composition forms a hard, flexible coating having a surface conductivity of at least 100 Ransburg units when cured at room temperature or low bake conditions. The coating composition can be used on metal or plastic substrates to render the substrate conductive.
摘要:
Reactive polyurethane hotmelts comprising crystallizing polyesterpolyols based on fumaric acid and 1,6-hexanediol. These hotmelts exhibit good pressure-sensitive adhesive (PSA) properties over a very broad temperature range. The reactive polyurethane hotmelts are prepared by mixing a polyol mixture containing at least on crystallizing polyesterpolyol with an excess of polyisocyanates.
摘要:
A binder resin for a toner comprises a polyester component having a specific structure which is not soluble in tetrahydrofuran, and a polyester component having a specific branched structure which is soluble in tetrahydrofuran. The binder resin can provide a toner, which is superior in low-temperature fixation and offset resistance and can be used in high speed printing in response to the recent market demands owing to its specific structure.
摘要:
The present invention has for its object to provide an ester elastomer having a high block of the hard and soft segment components, high flexibility, and good mechanical properties at high temperature, particularly high temperature creep resistance and a process for producing said ester elastomer. The present invention relates to an ester elastomer which is a block copolymer comprising a polyester copolymer (A) and a polymer having hydroxyl groups at both terminal ends (B) (hereinafter referred to sometimes as hydroxyl-terminated polymer) coupled to each other through the intermediary of an urethane component (C) consisting in a group of general formula (1); —O—CO—NH—R1—NH—CO—O— (1) (wherein R1 represents an alkylene group containing 2 to 15 carbon atoms, —C6H4—, —C6H4—CH2—, —C6H4—CH2—C6H4— (where —C6H4— represents phenylene)) or a group of general formula (2); —O—CO—NH—R2—NH—CO— (2) (wherein R2 represents an alkylene group containing 2 to 15 carbon atoms, —C6H4—, —C6H4—CH2— or C6H4—CH2—C6H4— (wherein —C6H4— represents phenylene)).
摘要翻译:本发明的目的是提供一种具有高块硬组分和软链段组分的高弹性,高温下的良好机械性能,特别是耐高温蠕变性的酯弹性体,以及制备所述酯弹性体的方法。 本发明涉及一种酯弹性体,其是包含聚酯共聚物(A)和在两个末端具有羟基的聚合物(B)(以下有时称为羟基封端的聚合物)的嵌段共聚物,其通过 由通式(1)组成的氨基甲酸酯组分(C)的中间体;(其中R 1表示含有2至15个碳原子的亚烷基,-C 6 H 4 - , - C 6 H 4 -CH 2 - , - C 6 H 4 -CH 2 -C 6 H 4 - (其中-C 6 H 4 - 表示亚苯基))或通式(2)的基团;(其中R 2表示含有2至15个碳原子的亚烷基,-C 6 H 4 - , - C 6 H 4 -CH 2 - 或C 6 H 4 -CH 2 -C 6 H 4 - ( 其中-C 6 H 4 - 代表亚苯基))。
摘要:
A magnetic recording medium possessing a magnetic layer formed by application onto a non-magnetic support, of a magnetic coating containing magnetic particles dispersed in a binder which contains a polyurethane resin, together with carbon black particles at 5% by weight or higher, based on the weight of the magnetic particles. The polyurethane resin to be used herein is composed of: (a) a polyester polyol having a molecular weight of 2000 or lower and containing at least one selected from the group consisting of aromatic dibasic acids and alicyclic dibasic acids at a ratio of 90 mol % or higher of acid components; (b) a high molecular weight polyol having a molecular weight of 5000 or lower, which is at least one selected from the group consisting of (b1) polyester polyols each containing an aliphatic dibasic acid at a ratio of 90 mol % or higher of acid components, (b2) polylactones, (b3) polyester polyols, and (b4) polycarbonate polyols; (c) an organic diisocyanate compound; and (d) an optional compound having a molecular weight of 500 or lower and containing at least two functional groups in one molecule, which are reactive with isocyanate groups.
摘要:
The disclosed invention relates to a polyurethane elastomer that has improved hydrolysis resistance. The polyurethane elastomer is made by reacting a polyol blend of an aromatic dicarboxylic acid based polyester polyol, an aliphatic dicarboxylic acid based polyester polyol, and a blowing agent. The polyol blend is reacted with an isocyanate terminated prepolymer. The aromatic dicarboxylic acid based polyester polyol is the reaction product of an aliphatic alcohol and ortho-phthalic acid. The aliphatic dicarboxylic acid based polyester polyol is the reaction product of adipic acid and glycols.
摘要:
A metallized article and method for making the article, including a substrate having a polyurethane basecoat disposed thereon, with a layer of electrically discrete metallic islands of a corrosion prone metal disposed on the basecoat. A cross-linked polyurethane topcoat, containing an aminosilane, is further disposed on an encapsulates the discrete metallic islands.
摘要:
The present invention relates to membranes including an urethane including a polyester polyol, wherein the membrane has a gas transmission rate of 15.0 or less for nitrogen gas wherein the membrane has an average thickness of approximately 20.0 mils. Under certain embodiments, the membranes include blends of one or more polyester polyol based thermoplastic urethanes and one or more barrier materials. The membranes can be employed in a variety of applications and can be used as either monolayers or multi-layered laminates.