成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 3-(ACRYLOYLOXY)-2-HYDROXYPROPYL METHACRYLATE
1709-71-3

3-(ACRYLOYLOXY)-2-HYDROXYPROPYL METHACRYLATE synthesis

2synthesis methods
-

Yield:-

Reaction Conditions:

2,6-di-tert-butyl-4-methyl-phenol;triethylamine at 80; for 48 h;Product distribution / selectivity;

Steps:

C2
13.27 g of glycidyl methacrylate, 0.02 g of 2,6-ditert.-butyl-4-methylphenol, 6.78 g of acrylic acid and 0.10 g of one of the catalysts set forth in Table 1 were reacted each time at 80° C. in a glass vessel with a small opening and with magnetic stirring. The acid value was determined after 24 and 48 hours. If it was greater than 4 mg KOH/g after 48 hours, the batch was discarded without further analysis. The catalysts in comparison examples C2 to C6 exhibit, for a given weight, much lower activity, and those in C7 and C8 a lower activity, than the catalyst in example 9 according to the invention. The reaction product was at least equal to the comparison products according to the acid value, hydroxyl value and purity (GPC analysis).

References:

Bayer MaterialScience AG US2006/189823, 2006, A1 Location in patent:Page/Page column 4

3-(ACRYLOYLOXY)-2-HYDROXYPROPYL METHACRYLATE Related Search: