Polycondensates having isobutylene side chain

A polycondensation product based on aromatics and/or heteroaromatics and aldehydes, wherein the product contains

• a) at least one structural unit (I) having a polyisobutylene side chain and an aromatic or heteroaromatic and
• b) at least one structural unit (H) having an ionizable functional group and an aromatic or heteroaromatic, structural unit (I) differing from structural unit (II) and the aldehyde used having no acid or ester functions,
• wherein the structural unit (II) is represented by the following general formula
• L-Q-O-M (II)
• wherein Q are identical or different and are represented by a substituted or unsubstituted aromatic or heteroaromatic compound having 4 to 12 C atoms,
• wherein L are identical or different and are represented by an ionizable functional group from the series consisting of SO3H, COOH, PO3H2, OPO3H2, dialkylamine and trialkylammonium,
• wherein 0 is oxygen,
• and
• wherein M are identical or different and are represented by H, a C1 to C10 alkyl radical, C1 to C10 hydroxyalkyl radical, C1 to C10 carboxylic acid, aryl radical or heteroaryl radical.

A polycondensation product based on aromatics and/or heteroaromatics and aldehydes, wherein the product contains

• a) at least one structural unit (I) having a polyisobutylene side chain and an aromatic or heteroaromatic and
• b) at least one structural unit (II) having an ionizable functional group and an aromatic or heteroaromatic, structural unit (I) differing from structural unit (II) and the aldehyde used having no acid or ester functions,
• wherein the structural unit (II) is represented by the following general formula
• wherein D are identical or different and are represented by a substituted or unsubstituted aromatic or heteroaromatic compound having 4 to 12 C atoms,
• wherein E are identical or different and are represented by N, NH or O,
• wherein m=2 if E=N and m=1 if E=NH or O,
• wherein R3 and R4, independently of one another, are identical or different and are represented by a branched or straight-chain C1 to C10 alkyl radical, C5 to C8 cycloalkyl radical, aryl radical, heteroaryl radical or H, and
• wherein b are identical or different and are represented by an integer from 0 to 300.

A polycondensation product based on aromatics and/or heteroaromatics and aldehydes, wherein the product contains

• a) at least one structural unit (I) having a polyisobutylene side chain and an aromatic or heteroaromatic and
• b) at least one structural unit (II) having an ionizable functional group and an aromatic or heteroaromatic, structural unit (I) differing from structural unit (II) and the aldehyde used having no acid or ester functions,
• wherein the product contains at least one further structural unit (III) which is represented by the following general formula
• wherein A are identical or different and are represented by a substituted or unsubstituted aromatic or heteroaromatic compound having 4 to 12 C atoms,
• where in B are identical or different and are represented by N, NH or O,
• wherein n=2 if B=N and n=1 if B=NH or O,
• wherein R1 and R2, independently of one another, are identical or different and are represented by a branched or straight-chain C1 to C10 alkyl radical, C5 to C8 cycloalkyl radical, aryl radical, heteroaryl radical or H,
• wherein a are identical or different and are represented by an integer from 1 to 300,
• wherein X are identical or different and are represented by a branched or straight-chain
• C1 to C10 alkyl radical, C5 to C8 cycloalkyl radical, a branched or straight-chain
• C1 to C10 carboxylic acid ester radical, aryl radical, heteroaryl radical or H.