Aliphatic coating of polyisocyanate crosslinking agent

Aliphatic coating of polyisocyanate crosslinking agent,Water emulsion type of aliphatic polyisocyanate crosslinking agent, can be used for acrylic emulsion, VAE emulsion latex, synthetic rubber, polyurethane emulsion, polyvinyl acetate emulsion, and a variety of system of distribution of the emulsion system such as crosslinking agent. Through crosslinking effect can improve the heat resistance, water resistance, corrosion resistance of adhesive properties, such as plasticizer, solvent resistance.

Also can greatly improve the adhesion strength of the adhesive. Because of the special system of surface active aliphatic polyisocyanate crosslinking agent can quickly under conventional low-speed mixing mixed with emulsion system, achieve excellent dispersion effect. Compared with the ordinary crosslinking agent aliphatic polyisocyanate crosslinking agent has better stability and storage stability of mixture, temperature low viscosity, low temperature is not easy to produce flocculant turbidity and set.

The product application

1, aliphatic polyisocyanate crosslinking agent as a two-component water-borne coatings cross-linking agent are widely used in waterborne wood paint, industrial paint, plastic water-based paint, etc., can improve the film scratch resistance, water resistance, impact strength, hardness and adhesion.

2, aliphatic polyisocyanate crosslinking agent in a two-component water-borne glue, suitable for aqueous polyurethane emulsion, acrylic emulsion, VAE emulsion and PVAC emulsion, and the emulsion system of compound recipe. Composite fastness can be improved, water resistance, heat resistance, solvent resistance and weather resistance, etc.

3, aliphatic polyisocyanate crosslinking agent can be used directly after diluted solvent, as some of the bottom of the base material of the coating agent.

4, aliphatic polyisocyanate crosslinking agent in added to the system to achieve better dispersion effect, mechanical way should be adopted to stir. Manual not stir to form a homogenous solution, especially when the system viscosity is low, fully mixing is particularly important. Inadequate stirring is easy to form gel grains in the system.

5, adding aliphatic polyisocyanate crosslinking agent, the two-component system must run out in the applicable period. The length of the applicable period is not only related to the content of the polymer, but also with other components (such as resin, thickening agent, plasticizer, etc.). Applicable period (usually for a few hours), is not always show gel state. By measuring its heat resistance and water resistance.

6, aliphatic polyisocyanate crosslinking agent sealed original preservation under 10 to 25 ℃, stable for 6 months. Is sensitive to moisture, in response to form carbon dioxide and water insoluble urea. So packing container must keep sealed state. Should avoid the reaction with moisture, solvent, and moisture in the wet container. The carbon dioxide will make pressure increases, thus increasing the danger.




Chinese name: Diethyl toluene diamine(DETDA)

Diethyltoluenediamine Uses:

The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.


Isocyanate is the floorboard of all sorts of isocyanic acid ester. If the number of classification with - NCO groups, including single isocyanate R - N = C = O and diisocyanate O = C = N - R - N = C = O and more isocyanate, etc.

Single isocyanate is one of the important intermediates in organic synthesis, can be made into a series of carbamate insecticides, fungicides, herbicides, and also to improve waterproof plastic, fabric, leather, etc. More than two functional groups and isocyanate can be used in the synthesis of a series of excellent performance of polyurethane foam plastic, rubber, elastic fiber, paint, adhesives, synthetic leather, artificial wood, etc.

Currently, the largest output is the most widely used are: Toluene Diisocyanate (Toluene Diisocyanate, TDI); Diphenyl methane Diisocyanate (Methylenediphenyl Diisocyanate, MDI).

Toluene diisocyanate (TDI) is a colorless, has a strong pungent flavour liquid, the boiling point of 251 ° C, specific gravity 1.22, with light black, has strong stimulation to the skin, eyes, and can cause eczema with bronchial asthma, is mainly used for polyurethane foam plastics, coating, synthetic rubber, insulating paint, adhesives, etc. According to its composition, tdi is a nitrogenous base of organic compounds.

Diphenyl methane diisocyanate (MDI) is divided into pure MDI and crude MDI. Pure MDI under normal temperature for white solid, when heated to stimulate the stink, the boiling point of 196 ° C, it is mainly used for rigid polyurethane foam plastics, synthetic fiber, synthetic rubber, synthetic leather, adhesives, etc. According to its composition, pure diphenyl methane diisocyanate was nitrogenous organic compounds. And the yellow variant 1, 6 - diisocyanate (HDI).

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Diethyl toluene diamine(DETDA)  http://www.yaruichem.com