发明授权
US3825514A Film forming hydrophilic amide polymer compositions 失效
胶膜形成亲水性聚酰胺组合物

Film forming hydrophilic amide polymer compositions
摘要:
HYDROPHILIC AMIDE POLYMERS ARE OBTAINED BY INTERPOLYMERIZING MONOMERS OF AN ETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACID, ETHYLENICALLY UNSATURATED HARD MONOMERS OF THE LOWER ALKYL ESTERS OF AN ACRYLIC ACID AND A SOFT ALKYL ESTER OF AN ALPHA, BETA-ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND ACYLATING WITH HYDROPHILIC AMINES. THE POLYMERIZED MONOMERIC UNITS ARE SUFICIENT TO PROVIDE AN AVERAGE POLYMER TG RANGING FROM ABOUT 35* TO ABOUT 45*C. AND A WEIGHT AVERAGE MOLECULAR SIZE (AW) OF ABOUT 500 TO 5,O00.
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