PROBLEM TO BE SOLVED: To provide an antiadhesive agent capable of preventing adhesion with a wound surface, and a wound covering material which has high liquid passing property and prevents adhesion with a wound surface, suitable for use in various traumatotherapy such as burn therapy and bedsore therapy and as a protective material after surgery.SOLUTION: A polymer represented by the following general formula I is used as the antiadhesive agent. The wound covering material includes a porous substrate coated with the antiadhesive agent. In the general formula I, R1 represents a hydrocarbon group having a carbon number of 1 to 15, m represents an integer in the range of 20 to 200, and n represents an integer in the range of 200 to 1000.COPYRIGHT: (C)2014,JPO&INPIT【課題】創傷面との癒着が防止できる癒着防止剤を提供し、さらに、通液性が良好で創傷面への癒着が防止され、熱傷治療や褥瘡治療などの様々な外傷治療や外科手術後の保護材としての利用に好適である創傷被覆材を提供する。【解決手段】下記一般式Iで示されるポリマーを癒着防止剤として用いる。さらにこれを多孔性基材に塗布した創傷被覆材。(一般式I中、R1は炭素数1~15の炭化水素基を表し、mは20~200の範囲の整数を表す。nは200~1000の範囲の整数を表す。)【選択図】なし