On October 1st, 2025, the annual National Day will be held as scheduled, which is a joyful moment for the whole country to celebrate national prosperity and unity. Mid-Autumn Festival is approaching on October 6th, 2025. It is a traditional festival with a long history, and also a good time for family reunion. On this day, people admire the moon, eat mooncakes, express their longing and love to their loved ones, and enjoy the warmth and joy of reunion. This year, two festivals meet, and this moment is even more festive. All of us at Sunman sincerely wish you and your family happiness, safety, and success! Sunman's 2025 National Day and Mid-Autumn Festival holidays: October 1st (Wednesday) to October 8th (Wednesday), 2025 During the holiday period, Sunman will temporarily suspend normal office operations. But If you have any urgent inquiry, please feel free to contact us via email or phone at any time. We will reply to you as soon as possible.

The polyurethane resin used in the ink is generally made of a polyester/polyether polyol and an isocyanate, and has a molecular force of about 20,000 to 40,000. Its solvents are mainly benzene, ketone, ester solvents as the main solvent. In the research and development process, according to the environmental requirements of the ink factory and the printing factory, the corresponding benzene-free ink resin can be prepared by using a keto ester solvent or an alcohol ester solvent. Ink polyurethane resin features： 1. Excellent adhesion fastness to film substrates Polyurethane resin ink segment contains polar groups such as carbamate, allophanate ester, ester bond, ether bond, and polar groups formed on the surface of many polar substrates such as PET, PA, etc. Hydrogen bonds, in turn, form a linker with a certain degree of linking strength. After the polyurethane resin is made into an ink, it is printed on a polar plastic substrate surface with excellent adhesion fastness. 2. Good affinity and wettability with pigments Polyurethane resins for inks are generally prepared from polyester or polyether polyols, alicyclic diisocyanates and diamine/diol chain extenders and have a molecular weight of about tens of thousands. Due to the introduction of the urea bond in the PU resin, a polyurethane-urea resin (PUU) is formed so that it has good dispersion wetting properties to the pigment. 3. Good resin compatibility The polyurethane resin for ink has good compatibility with aldehyde and ketone resin, vinyl resin, etc. The user can add it according to the actual situation and his own craft formula to improve the ink's overall performance. 4. Excellent yellowing resistance In the preparation process, the polyurethane resin for printing ink mainly uses aliphatic polyester and aliphatic isocyanate as the main raw materials for synthesis. Compared with aromatic polyurethane, it has excellent optical stability, and the film has excellent yellowing resistance after film formation. 5. Excellent film formation Ink polyurethane resins are structurally different from polyurethane resins used in other fields. Traditional polyurethanes mainly react with polyester polyols/polyether polyols with isocyanic acid to produce hydroxyl terminated polyurethane resins. The polar groups in the molecular structure are carbamates. Mainly ester, molecular cohesion is insufficient to meet the filming performance requirements of ink resin. Therefore, the use of polyurethane resins for inks to introduce urea groups on the basis of conventional polyurethanes greatly improves the cohesive strength and film-forming properties of the resins themselves. 6. Wide compatibility of organic solvents and good solvent release Solubility of the organic solvent to the resin is achieved by the polarity of the solvent molecule attracting solute molecules, which is commonly known as the same type of miscibility; traditional polyurethane resin has extensive compatibility with organic solvents, ketones, es...

An odorless, pale yellow resin prepared by adding up to 65% chlorine to an elastomer, such as natural rubber, butyl rubber, or styrene-butadiene. Chlorinated rubber produces a hard tough, glossy film. It is used primarily in the for paints, varnishes, adhesives, inks and paper coatings. Chlorinated rubber is also used for waterproof paints on floors and swimming pools. It is very resistant to chemicals and moisture. Chlorinated Rubber in Paint: Chlorinated rubber paint usually consists of chlorinated rubber resin, modified resin, pigments/fillers, additives, and solvents. Not limited by temperature during construction: chlorinated rubber coatings can be applied in environments ranging from -20 to 50°C, without being limited by season or temperature. Convenient to use: most chlorinated rubber coatings are single can packaging systems, and do not require temporary mixing of other components at the construction site. After opening the packaging drum and mixing it uniformly, the coating can be used. Quick drying: chlorinated rubber coatings are physically drying coatings that dry by solvent evaporation. The solvent release rate is fast, and after painting, it dries quickly into a film. After 4 to 6 hours at room temperature, the second coat can be applied. Thick coating can be obtained: chlorinated rubber thick paste coatings, if sprayed with high-pressure airless spraying, can achieve a dry film thickness of about 55-85μm for each pass. The highest dry film thickness can reach 120μm, so a few less coatings can obtain a thick coating and shorten the construction period. Good adhesion: chlorinated rubber coatings have good adhesion to steel and metal surfaces. At the same time, the solvent in the film-forming material can infiltrate between the layers, making them stick together, thereby enhancing the adhesion between the coating layers. Good anti-corrosion properties: since chlorinated rubber itself is a chemically inert film-forming material, the permeability of the coating film to water vapor and oxygen is ultra-low, only 1/10 of that of alcohol and acid. Moreover, it has good resistance to water, salt, acid, alkali, oxidants, and various corrosive gases. Convenient for maintenance: during maintenance, there is no need to remove the firmly adhered old paint film. The new and old paint films can have mutual dissolution due to the penetration of solvents, which results in strong adhesion. Chlorinated rubber paint can also be applied on some other types of paint films, making maintenance very convenient. Good anti-toxicity and flame-retardancy: due to the high content of "chlorine" polymers in the components of chlorinated rubber coatings, it has the property of inhibiting the growth of poisonous bacteria. If the surface of the equipment encounters a fire source, the coating film can decompose chlorine gas, which has a certain flame-retardant effect. Our goods are equivalent to most of worldwide brand, like Pergut S series. So any more ...