Repellent

A repellent for paper, comprising a liquid-repellent compound, the liquid-repellent compound having

• an amine backbone, and
• one or more long chain hydrocarbon-containing groups represented by the following formula:
• —X—Rn
• wherein
• X is a direct bond or a 1+n valent group, composed of one or more selected from the group consisting of a direct bond, —O—, —C(═O)—, —C(═NR′—), —S—, —S(═O)2-, —NR′—, —C(OR′) R′—, —C(OR′) (-)2, —N(-)2, a divalent to tetravalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, a divalent to tetravalent hydrocarbon aromatic ring, and a divalent to tetravalent heterocyclic ring,
• wherein R′ is a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms,
• R is independently at each occurrence a linear or branched chain monovalent hydrocarbon group having 6 and 40 carbon atoms and optionally having a substituent, and
• n is an integer of 1 or more and 3 or less,
• wherein at least one of the long chain hydrocarbon-containing groups is bonded to a nitrogen atom of the amine backbone,
• wherein the liquid-repellent compound is a compound represented by
• the following formula:
• N(—X—Rn)p(—H)q-L1-[N(—X—Rn)r(—H)s-L1-]t-N(—X—Rn)p(—H)q
• wherein
• X is independently at each occurrence a direct bond or a 1+n valent group;
• R is independently at each occurrence a linear or branched chain monovalent hydrocarbon group having 6 or more and 40 or less carbon atoms and optionally having a substituent;
• L1 is independently at each occurrence a divalent aliphatic hydrocarbon group or aromatic hydrocarbon group having 2 to 20 carbon atoms optionally interrupted by an oxygen atom and/or a sulfur atom;
• n is independently at each occurrence an integer of 1 or more and 3 or less;
• p is independently at each occurrence an integer of 0 or more and 2 or less;
• q is independently at each occurrence an integer of 0 or more and 2 or less;
• p+q is 2 in each N(—X—Rn)p(—H)q;
• r is independently at each occurrence 0 or 1;
• s is independently at each occurrence 0 or 1;
• r+s is 1 in each N(—X—Rn)r(—H)s;
• a sum of all p and all r is 1 or more;
• and
• t is an integer of 0 or more and 10 or less,
• or
• a compound represented by the following formula:
• N(—X—Rn)p(—H)q-L2(-X—Rn)u
• wherein
• X is independently at each occurrence a direct bond or a 1+n valent group;
• R is independently at each occurrence a linear or branched chain monovalent hydrocarbon group having 6 or more and 40 or less carbon atoms and optionally having a substituent;
• L2 is a 1+u valent aliphatic hydrocarbon group or aromatic hydrocarbon group having 2 to 20 carbon atoms optionally interrupted by an oxygen atom and/or a sulfur atom;
• n is independently at each occurrence an integer of 1 or more and 3 or less;
• p is an integer of 0 or more and 2 or less;
• q is an integer of 0 or more and 2 or less;
• p+q is 2;
• u is an integer of 1 or more and 3 or less;
• a sum of p and u is 1 or more,
• wherein the repellent is free of a fluorine compound.