Encapsulation of bulky fragrance molecules

A fragrance composition to be incorporated into the core of a core shell capsule comprising:

• I) 60-100% by weight of at least 5 fragrance compounds, 20-100% by weight of said fragrance compounds comprised of at least 3 bulky molecules having a molecular weight of less than 275 atomic mass units, possessing any of the following structural features:
• a) molecules containing more than one ring, each containing 5 or 6 carbon atoms, no atoms being shared by any of the rings;
• b) molecules having at least two rings, each having between 3 and 6 atoms in which any rings share a common atom;
• c) molecules having at least two rings, each ring containing 5 or 6 carbon atoms in which two rings share at least two adjacent common atoms;
• d) molecules containing a single alicyclic ring which contains at least 5 atoms, but no more than 8 atoms, of any of carbon, oxygen, nitrogen and sulfur in which at least one of the carbon atoms of the ring has two substituents, or a carbon atom alpha to the ring is tertiary carbon atom, or the ring has substituents on at least three of the atoms which make up the ring;
• e) molecules containing at least one macrocyclic ring, which is a ring having more greater than eight atoms in the ring;
• f) molecules containing at least one substituted benzene ring but in which at least one substituents group processes a tertiary carbon in a position alpha or beta to the ring;
• and
• II) 0-40% by weight of pro-fragrances, solvents, and other benefit agents which possess any of the structures a) to f) but are not constrained by the molecular weight restrictions.

A method for delivering a fragrance composition to a surface, which comprises contacting the surface with a household, laundry or personal care composition which is in the form of a liquid, gel, paste, soft solid, or liquid applied to a fibrous substrate such as a wipe, containing one or more of surfactants and/or solvents,

• optionally diluted with water or delivered from a suitable washing appliance in such a way that core shell capsules contained in the household, laundry or personal care composition release the fragrance composition which is contained in the core of the core shell capsules either directly on application or subsequently,
• wherein the fragrance composition contained in the core of the core shell capsule comprises:
• I) 60-100% by weight of at least 5 fragrance compounds, 20-100% by weight of said fragrance compounds comprising at least 3 bulky molecules having a molecular weight of less than 325 atomic mass units, conforming to the following structures:
• a) molecules containing more than one ring, each ring having between 3 and 8 atoms of any of carbon, oxygen, nitrogen or sulfur in any ring and atoms being shared by any of the rings;
• b) molecules having at least two rings, each ring having between 3 and 8 atoms of any of carbon, oxygen, nitrogen or sulfur in which any rings share a common atom;
• c) molecules having at least two rings, each ring having between 3 and 8 atoms of any carbon, oxygen, nitrogen or sulfur in which any two rings share at least two adjacent common atoms;
• d) molecules containing a single alicyclic ring which contains at least 5 atoms, but no more than 8 atoms, of any of carbon, oxygen, nitrogen and sulfur in which at least one of the carbon atoms of the ring has two substituents, or a carbon atom alpha to the ring is tertiary carbon atom, or the ring has substituents on at least three of the atoms which make up the ring;
• e) molecules containing at least one macrocyclic ring, which is a ring having more greater than eight atoms of any of carbon, nitrogen oxygen or sulfur in the ring;
• f) molecules containing at least one substituted aromatic ring containing at least 5 atoms of any of carbon, oxygen, nitrogen or sulfur, but in which at least one substituents has a tertiary carbon in a position alpha or beta to the ring;
• g) molecules containing a substituted aromatic ring comprising at least 5 atoms with at least 3 substituents groups on the ring all of which must contain at least 2 atoms from among carbon, oxygen, nitrogen or sulfur;
• and
• II) 0-40% by weight of pro-fragrances, solvents, and other benefit agents which possess any of the structural features a) to g) but are not constrained by the molecular weight restrictions.

A method for delivering a fragrance composition to a surface, which comprises contacting the surface with a household, laundry or personal care composition which is in the form of a liquid, gel, paste, soft solid, or liquid applied to a fibrous substrate such as a wipe, containing one or more of surfactants andor solvents,

• optionally diluted with water or delivered from a suitable washing appliance in such a way that core shell capsules contained in the household, laundry or personal care composition release the fragrance composition which is contained in the core of the core shell capsules either directly on application or subsequently,
• wherein the fragrance composition contained in the core of the core shell capsule comprises:
• I) 60-100% by weight of at least 5 fragrance compounds, 20-100% by weight of said fragrance compounds comprised of at least 3 bulky molecules having a molecular weight of less than 275 atomic mass units, possessing any of the following structural features:
• a) molecules containing more than one ring, each containing 5 or 6 carbon atoms, no atoms being shared by any of the rings;
• b) molecules having at least two rings, each having between 3 and 6 atoms in which any rings share a common atom;
• c) molecules having at least two rings, each ring containing 5 or 6 carbon atoms in which two rings share at least two adjacent common atoms;
• d) molecules containing a single alicyclic ring which contains at least 5 atoms, but no more than 8 atoms, of any of carbon, oxygen, nitrogen and sulfur in which at least one of the carbon atoms of the ring has two substituents, or a carbon atom alpha to the ring is a tertiary carbon atom, or the ring has substituents on at least three of the atoms which make up the ring;
• e) molecules containing at least one macrocyclic ring, which is a ring having more greater than eight atoms in the ring;
• f) molecules containing at least one substituted benzene ring but in which at least one substituents group processes a tertiary carbon in a position alpha or beta to the ring;
• and
• II) 0-40% by weight of pro-fragrances, solvents, and other benefit agents which possess any of the structures a) to f) but are not constrained by the molecular weight restrictions.