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Jiangmen, China

Carpoly Chemical Group Co. and Guangdong Carpoly Chemical Co. | Date: 2007-02-06

Paints; thinners for lacquers; siccatives in the nature of drying agent component of paints; coatings in the nature of paints; agglutinants for paints; lacquers.

Wang Y.,South China University of Technology | Zhu Y.,Carpoly Chemical Group Co. | Qu J.,South China University of Technology
Huagong Xuebao/CIESC Journal | Year: 2013

The second generation hyperbranched polyester(HBP-0) was synthesized by the pseudo-one step method with 2, 2-bis(hydroxyl-methyl) propionic acid as AB2 monomer, trimethylolpropane as core monomer and p-toluene sulfonic acid as catalyst. HBP-0 was modified with ε-caprolactone and lauric acid to prepare modified hyperbranched polyesters(HBP-1, HBP-2, and HBP-3). The structure and molecular weight of HBPs were characterized by FT-IR, 1H NMR and GPC. HBP-0 was synthesized with 0.43 degree of branching and its molecular weight approached the theoretical value and distribution factor was 1.72. The film properties of modified HBPs cured by toluene diisocyanate adduct were studied, and the results showed that the modified HBPs displayed excellent film properties in the gross, impact resistance, adhesion and flexibility. HBP-3 modified by both ε-caprolactone and lauric acid exhibited the best properties, including lowest viscosity up to 7500 mPa·s, surface drying time of 40 min and pencil hardness of F. While the corresponding data of HBP-1 and HBP-2 modified only by ε-caprolactone or lauric acid were 7×105 mPa·s, 20 min and HB; 17500 mPa·s, 90 min and 2B, respectively.

Qu T.,Guangdong University of Technology | Zhang K.,Guangdong University of Technology | Luo H.,University of Hong Kong | Wang Z.,Guangdong University of Technology | And 4 more authors.
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2015

The new Industry 4.0 strategy defines the automatic interaction and dynamic synchronization among multiple production sub-systems under manufacturing internet of things (MIOT) enabled environment, aiming at maintaining the whole system in an optimally operating status. The synchronization of production and logistics sub-systems could largely enhance the overall production efficiency, yet how to vertically enable the dynamic adaption between decision and execution levels and at the same time to horizontally enable the global coordination among production and logistics sub-systems remain two key challenges of finally achieving the dynamic synchronization of production and logistics. A MIOT-enabled dynamic production-logistics synchronization framework is proposed, which extends the AUTOM information infrastructure to a production-logistics-adapted new infrastructure which supports multi-level and multi-stage seamless information exchanging, and then puts forward a multi-iteration adaptive decision mechanism to enable the synchronization of production and logistics. Finally, a practical industrial case of production-warehousing synchronization is used to demonstrate the proposed solution. A feasible MIOT-based application framework and system is provided, which enable the dynamic operation coordination and adaptive decision-making of large production system. © 2015 Journal of Mechanical Engineering.

Yan M.,South China University of Technology | Zhu Y.,Carpoly Chemical Group Co. | Qu J.,South China University of Technology
Huagong Xuebao/CIESC Journal | Year: 2014

The novel hydrophilic monomers trimethylolpropane phthalate esters (TMPPs), trimethylolpropane monoesters of maleic acid (TMPMs) and trimethylolpropane succinic monoester(TMPSs) were synthesized by esterification of trimethylolpropane(TMP) with phthalic anhydride(PA), maleic anhydride(MA) and succinic anhydride(SA), respectively. Then the anionic/non-ionic aqueous polyurethane dispersions (PUD) were synthesized by the prepolymer process using the novel hydrophilic monomers and polyoxyethylene ether (Ymer™ N120) as compounding hydrophilic component. The effects of the type of hydrophilic monomers and mass ratio of TMPPs/N120 on the chemical resistance, hardness, mechanical properties and thermal stability of PUD films were studied. The storage stability, film hardness, water- and alcohol- resistance of PUD prepared from TMPPs were better than those from TMPMs and TMPSs. With increasing TMPPs/N120 mass ratio, the tensile strength of PUD film increased, elongation at break decreased, PUD film hardness increased and alcohol-resistance became good, while PUD solids contents decreased. The optimal mass ratio of TMPPs and N120 ranged from 6:5 to 4:8. Compared with DMPA, TMPPs could improve the hardness and thermal stability of PUD films, and significantly strengthened stain resistance, including resistance to ink, coffee, tea and wine. Therefore, TMPPs is a good hydrophilic compound to prepare PUD. © All Rights Reserved.

Xu X.,South China University of Technology | Zhong S.,South China University of Technology | Zhu Y.,Carpoly Chemical Group Co. | Qu J.,South China University of Technology
Huagong Xuebao/CIESC Journal | Year: 2016

The novel diol chain-extender trimethylol propane monolaurate (TMPLA) was synthesized to prepare novel polyurethane aqueous dispersions (n-PUD),which was used as a coalescent to assist the film forming of high Tg polyacrylate emulsion. Effects of NCO/OH molar ratio, soft/hard segment contents and molar ratio of TMPLA/BDO on assistant-film-forming performance of n-PUD were studied. It was found that the assistant-film-forming ability of PUD was increased with decreasing of NCO/OH molar ratio and hard segment proportions. PUDs modified with TMPLA displayed good assistant-film-forming ability. The optimized conditions to prepare assistant-film-forming n-PUD were as follows: molar ratios of TMPLA/BDO and NCO/OH were 4/2 and 1.3, respectively, mass ratio of soft/hard segment was 55/45, and then the blended latex with m(PUD)/m(PA) 25/75 can form a continuous transparent film at 5℃ without coalescent with a VOC content as low as 30 g·L-1. © All Right Reserved.

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