The thermal stability, char yield and flame retardancy have been obviously improved by grafting acrylic or methacrylic acid or their sodium salts into ABS or SBS.
将丙烯酸或甲基丙烯酸及它们的钠盐接枝到某些ABS和SBS上，可明显提高接枝共聚物的热稳定性、成炭率及阻燃性。
Main factors affecting the graft modification of acrylic acid and methacrylic acid onto melt - blown polypropylene nonwovens initiated by benzoyl peroxide are studied.
研究用过氧化苯甲酸引发丙烯酸和甲基丙烯酸接枝熔喷聚丙烯非织造布的主要影响因素。
Tanning mechanism of poly (methacrylic acid) to pigskin was studied by X-ray diffraction, its tanning results were compared with that tanned with poly (acrylic acid) tanning agents.
用x -射线衍射法研究了聚甲基丙烯酸对猪皮的鞣制机理，并对其与聚丙烯酸鞣剂的鞣制效果进行了比较。
A kind of crosslinking modified organic glass was prepared by mold copolymerization of methyl methacrylate, styrene, methacrylic acid with divinylbenzene as crosslinking agent.
以二乙烯基苯为交联剂，由甲基丙烯酸甲酯、苯乙烯、甲基丙烯酸模型浇铸共聚，制得了一种交联型改性有机玻璃。
The polymer was prepared by copolymerizing vinyl sulfonate, methyl methacrylate(MMA) and methacrylic acid(MAA) in different proportions.
三元树脂由乙烯基磺酸酯、甲基丙烯酸甲酯（MMA）与甲基丙烯酸（MAA）按不同的配比共聚而成。
Methods:Silica gel tube adsorption and solvent desorption were used for sampling of methacrylic acid and analysis was performed by HPLC.
方法：以硅胶管采集空气中甲基丙烯酸，用甲醇解吸后高效液相色谱测定。
The present invention relates to a heteropoly acid catalyst which is used for the production of methacrylic acid by gas phase oxidation of methacrolein and a preparing method thereof.
本发明涉及一种用于通过异丁烯醛的气相氧化制备甲基丙烯酸的杂多酸催化剂及其制备方法。
Enteric acrylic acid resin for drug delivery was prepared by the solution polymerization with methacrylic acid and methyl methacrylate as raw materials and potassium persulfate as initiator.
以甲基丙烯酸与甲基丙烯酸甲酯为原料，过硫酸钾为引发剂，经溶液聚合制备出药用肠溶性丙烯酸树脂。考察了物料配比、反应温度、溶剂浓度、引发剂用量对反应的影响。
The present invention, thereby, provides a novel heteropoly acid catalyst having excellent methacrolein conversion rate, methacrylic acid selectivity and yield.
因此，本发明提供了一种具有优异的异 丁烯醛转化率、甲基丙烯酸选择性和产率的新型杂多酸催化剂。
The amphiphilic diblock copolymer PMMA-b-poly (methacrylic acid) can be further obtained very easily by hydrolysis of PMMA-b-PBEMA under a mild acid condition.
将PM MA - b -PBEMA在温和的酸性条件下水解，可以很容易地得到含有聚甲基丙烯酸(PMAA)嵌段的两亲性嵌段共聚物pmma - b - PMAA。
The amphiphilic diblock copolymer PMMA-b-poly (methacrylic acid) can be further obtained very easily by hydrolysis of PMMA-b-PBEMA under a mild acid condition.
将PM MA - b -PBEMA在温和的酸性条件下水解，可以很容易地得到含有聚甲基丙烯酸(PMAA)嵌段的两亲性嵌段共聚物pmma - b - PMAA。
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