MOCA is an aromatic diamine chain extender or curing agent widely used in casting polyurethane elastomers, elastomeric pavement materials, PU waterproof coatings, PU adhesives, PU foams, etc. The MOCA-chain-extended PU elastomers are widely applied in the areas including machinery, building, vehicles & transportation, mining industry, electronic components encapsulation and sport facility, etc. MOCA can also be used in curing epoxy resin.

MOCA-HR is a special MOCA grade features with color stability at high temperature. The color of the melted MOCA-HR keeps light-yellow and clear almost without any changes after being heated several times, even though the heating temperature is up to 150℃. It is recommended applied in a variety of casting polyurethane elastomer parts especially manufactured with casting machines. The products have light color.

MOCA is a kind of widely used high cost effective aromatic diamine chain extender or curing agent for casting polyurethane elastomers, water-proof polyurethane coatings, elastomeric pavement materials, PU adhesives, PU foams, etc. The PU elastomers chain-extended with MOCA have excellent properties, are widely applied in the areas including machinery, building, vehicles & transportation, mining industry, electronic components encapsulation and sport facility, etc.

XYlink M-CDEA is an aromatic chain extender. It has good compatibility with TDI-based prepolymer. The reaction of M-CDEA and prepolymer is faster than that of MOCA. XYlink M-CDEA is recommended mainly used for high-performance casting polyurethane elastomers, and can also be used in RIM PUs, microcellular polyurethane elastomers, and spray polyurethane-ureas, etc.

XYlink ML-200 is a liquid aromatic diamine with similar molecular structure to MOCA. It could be looked as a chemical modified MOCA and can be mixed with NCO-capped prepolymer at lower temperature, showing better operation performance than MOCA. ML-200 reacts faster than MOCA.

XYlink ML-400 is a liquid aromatic diamine with molecular structure similar to halves of MOCA and 4,4\\\\\\\\\\\\\\\'-diaminodiphenylmethane(MDA). It can be looked as a chemical modified MOCA and can be mixed with NCO-capped prepolymer at lower temperature, showing better operation performance than MOCA. ML-400 reacts faster than MOCA.

XYlink HQEE is a solid aromatic diol chain extender with symmetrical molecular structure. It is recommended applied with MDI-prepolymer. HQEE/MDI system has longer pot-life than MOCA/TDI and MOCA/MDI systems.

XYlink HQEE-L is para-substitution phenylether glycol mixture with 4-hydroxyethoxy-1-hydroxyethyl benzendiether as the main component. It is a homologue of the chain extender HQEE and could be considered as a liquid version of HQEE. HQEE-L has good operability than HQEE. It is suggested to be warmed 35-40℃ to get easy operability when it is frozen in winter. This product is applicable to medium hardness of elastomeric polyurethane products. The PU elastomers based on XYlink HQEE-L has good properties such as better elongation and flexure. The PU elastomers has good mechanical property and heat resistance than those based on aliphatic diol such as 1,4-butanediol.

XYlink HER is an aromatic diol chain extender with symmetrical molecular structure. Its structure regularity is less than its isomer HQEE because of two hydroxyethyl groups located on the benzene ring of 1,3-site (meta-). The melting point of HER is lower than HQEE, and the crystallization speed is slower than HQEE and MOCA. The pot-life of HER cured PU system is longer than that of butanediol system. The workability of XYlink HER is good.