Additive for temperature adaptive rheological distribution

The invention relates to a polymer P comprising at least one segment S1 and at least one segment S2 covalently linked to one another, where i) the at least one segment S1 has a number average molecular weight in the range of 6,000-25,000 g/mol and consists of ether repeat units and at least 75% by weight consists of repeat units of the formula-[CH2-CH2-O-]-, ii) the at least one segment S2 has a number average molecular weight in the range of 6,000-25,000 g/mol and consists of ether repeat units and at least 75% by weight consists of repeat units of the formula-[CH2-CH2-O-]-. The polymer P has a number average molecular weight of greater than or equal to 50,000 g/mol and consists of ether repeat units, and at most 25% by weight consists of repeat units of the formula-[CH2-CH2-O-]-, iii) polymer P comprises end groups comprising at least one of hydroxyl groups, a primary amine or salt thereof, a secondary amine or salt thereof, a carboxylic acid or salt thereof. 本发明涉及一种聚合物P，其包含彼此共价连接的至少一个链段S1和至少一个链段S2，其中i)至少一个