脲甲醛

脲甲醛预聚合对酞菁绿G颜料微胶囊化的影响

The Effect of Pre-polymerization of Urea-formaldehyde on Microencapsulation of Phthalocyanine Green G

必须开发高固体分和水性氨基醇酸涂料，推广新型氨基树脂（甘脲甲醛树脂、HMMM）及改性醇酸树脂（例如有机硅、丙烯酸酯改性醇酸树脂）。

Also it is essential to develop high solid and water-borne amino-alkyd paints and promote the applications of novel amino resins ( glycoluril-formaldehyde , HMMM ) and modified alkyds ( e.g.silicone and acrylate modified alkyds ) .

脲甲醛缩聚物制备电子墨水微胶囊研究

The preparation of electrophoretic ink microcapsules by using urea formaldehyde oligomer

脲甲醛树脂基白色电子墨水材料的制备

Preparation of electrophoretic ink using urea-formaldehyde oligomer

以此悬浮液为囊芯（多相），以脲甲醛树脂为壁材，用原位聚合方法制备了绿色电子墨水微胶囊。

Urea-formaldehyde microcapsules containing the suspending fluid as the core material were prepared by in situ polymerization .

三聚氰胺脲甲醛树脂

Urea melamine formaldehyde resin

研究了低分子量脲甲醛缩聚物水溶液的粘度特征和表面活性及其与胶囊包封率的关系。

The properties of viscosity and surface activity of urea - formaldehyde oligomers were studied , as well as their relationship with the encapsulation efficiency of microcapsules .

以密胺-脲甲醛树脂合成的小试工艺条件为依据，完成了放大试验过程的工艺研究。

The scale up test for the synthesis of melamine melocol resin was accomplished on the basis of the technological conditions adopted in the former pilot test .

以自制的脲甲醛低聚物和磷酸二氢钾-磷酸混合液反应合成了一种多营养元素高分子缓释化肥。

A slow release macromolecular fertilizer containing diverse nutrition was synthesized by condensation reaction between the homemade low molecular urea-formaldehyde and the compound of potassium dihydrogen phosphate and phosphoric acid .

塑料树脂：AB，ABS乳液、尿醛树脂、酚醛树脂、密胶（脲）甲醛树脂、聚乙烯、聚氯乙烯等。

PLASTICS AND RESIN : AB , ABS emulsion , uric acid resin , phenolic aldehyde resin , urea-formaldehyde resin , formaldehyde resin , polythene , poly-chloroprene and etc.

脲与甲醛和甲醇的反应产物；

Urea , reaction product with formaldehyde and methanol ;

糠醇-脲-甲醛树脂固砂剂

A Sand Consolidating Agent Based on Furfurol / Urea / Formaldehyde Resin for Use in High Water Cut and Severely Sanding Wells

纳米SiO2和CaCO3改性脲醛树脂甲醛含量及性能研究

Study on Using Nanometer SiO_2 and CaCO_3 for the Free Formaldehyde Content of the UF Resin

以脲素、甲醛、糠醇为原料，探索适当的合成工艺条件，合成出粘度适宜的糠脲树脂。

A furancarbinol urea formaldehyde having suitable viscosity was synthesized which used the urea , formaldehyde , and furfuralcohol as raw materials und the suitable conditions .

BL甲醛消纳剂是解决我国人造板因广泛使用脲胶而造成甲醛释放量严重超标问题的一项新技术。

Formaldehyde emission of Wood-based panels of our country exceeds seriously the allowing figure because of widely using UF resin .

实验结果表明，合成脲醛树脂的甲醛释放量达到F1环保指标，初始黏结力、胶合强度等综合指标均符合国家标准，成本则有较大降低。

And it was discovered that the concentration of exonerative formaldehyde of the urea-formaldehyde resin synthesized reaches the F1 target of environmental protection , the initial adhesive force and gluing intensity is up to the national standard , but the cost of the resin is reduced obviously .

银杏木炭降低脲醛树脂游离甲醛的研究

The ginkgo-activated carbo absorbed the free formaldehyde in the UF resins

用三聚氰胺进行改性的脲醛树脂的甲醛释放量明显低于未加任何改性剂的脲醛树脂。

Formaldehyde emission of melamine-modified UF resin was lower than that of unmodified .

降低脲醛树脂游离甲醛含量的探讨

Study on reducing content of free formaldehyde of UF

脲-三聚氰胺-甲醛树脂对白乳胶的改性研究

Modification of PVAc with Urea Melamine Formaldehyde Resin

对脲-三聚氰胺-甲醛树脂改性白乳胶进行了研究。

The modified PVAc emulsion adhesive with Urea melamine formaldehyde ( UMF ) resin is studied .

试验结果表明：固化体系不同，脲醛树脂的甲醛释放量有很大差别。

Experimental results showed formaldehyde emission values of the same UF resin in different curing system were various .

结果表明：在初始碱性阶段有70%的甲醛分子转化成了羟甲基脲，25%的甲醛分子转化成了亚甲基醚键。

It was proved that 70 % of formaldehyde molecule transformed into hydroxymethyl ureas and another 25 % of formaldehyde molecule formed methylene-ether bond in the initial alkaline reaction stage .

试验表明，新型防水剂具有提高板材防水性能和强度，减少脲醛树脂游离甲醛含量，简化工艺，降低成本和运输贮存方便诸方面的优越性。

The experiment shows that the new waterproof agent has the advantages of : enhancing waterproof property and strength of panels , decreasing the free formaldehyde content of urea formaldehyde resin , simplifying process , reducing cost and easy transportation and storage .

以脲醛树脂为囊壁的玫瑰香精微胶囊，其囊壁原料脲-甲醛预聚体的制备，采用了碱催化下的加成反应工艺。

The addition reaction with alkaline catalyst was used for the preparation of urea-formaldehyde prepolymer of rose perfume microcapsule .

报道了低游离甲醛脲醛树脂的合成工艺，采用三聚氰胺和聚乙烯醇作改性剂，实验结果表明，改性后的脲醛胶游离甲醛低，剪切强度高，耐水性好。

Using melamine and polyvinyl alcohol as modifiers , a new process for preparation of UF resin with low formaldehyde content was reported . Results showed that the modified UF resin had low formaldehyde content , high shear strength and good water-resistance .