Laundry scent additive

• US 8,476,219 B2
• Filed: 05/02/2012
• Issued: 07/02/2013
• Est. Priority Date: 11/05/2009
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Aouad, Yousef Georges
• Primary Examiner(s): Choi, Ling
• Assistant Examiner(s): REUTHER, ARRIE L
• Application Number:
  US13/462,157
• Publication Number:
  US 20120270765A1
• Time in Patent Office: 426 Days
• Field of Search: 512/4
• US Class Current: 512/4
• CPC Class Codes: A61K 8/84 obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
• CPC Class Codes: B29C 41/02 for making articles of definite length, i.e. discrete articles
• CPC Class Codes: B65D 83/06 for dispensing powdered or granular material B65D83/04 takes precedence
• CPC Class Codes: C11D 17/046 Insoluble free body dispenser
• CPC Class Codes: C11D 2111/12 Soft surfaces, e.g. textile
• CPC Class Codes: C11D 3/128 Aluminium silicates, e.g. zeolites C11D3/1253 takes precedence
• CPC Class Codes: C11D 3/2068 Ethers
• CPC Class Codes: C11D 3/2072 Aldehydes-ketones
• CPC Class Codes: C11D 3/2093 Esters; Carbonates
• CPC Class Codes: C11D 3/3707 Polyethers, e.g. polyalkyleneoxides
• CPC Class Codes: C11D 3/40 Dyes ; Pigments
• CPC Class Codes: C11D 3/505 encapsulated or adsorbed on a carrier, e.g. zeolite or clay
• CPC Class Codes: D06M 13/005 Compositions containing perfumes; Compositions containing deodorants
• CPC Class Codes: D06M 15/53 Polyethers polyacetals D06M15/39
• CPC Class Codes: D06M 23/12 Processes in which the treating agent is incorporated in microcapsules making microcapsules B01J13/02

Abstract

A laundry scent additive having polyethylene glycol and perfume. The laundry scent additive enables consumers to control the amount of scent imparted to their laundry.

Claims

1. A method of making a composition comprising the steps of:

providing a viscous material having a glass transition temperature, said viscous material comprising;

(a) from about 65% to about 99% by weight of said composition of polyethylene glycol;

(b) from about 2% to about 12% by weight of said composition free perfume; and

(c) from about 2% to about 12% by weight of said composition of a perfume microcapsule, wherein said perfume microcapsule comprises encapsulated perfume;

providing said viscous material at a processing temperature less than about 20 degrees Celsius higher than said glass transition temperature; and

passing said viscous material through small openings and onto a moving conveyor surface upon which said viscous material is cooled below said glass transition temperature to form a plurality of pastilles.

2. The method of claim 1, wherein said viscous material further comprises a dye.

3. The method of claim 1, wherein said polyethylene glycol has a molecular weight from about 3,000 to about 13,000.

4. The method of claim 1, wherein said composition comprises from about 80% to about 95% by weight of said composition of polyethylene glycol.

5. The method of claim 4, wherein said perfume microcapsule is a friable microcapsule and comprises a melamine/formaldehyde shell.

6. The method of claim 4, wherein said perfume microcapsule encapsulates from about 0.6% to about 4% by weight of said composition of perfume.

7. The method of claim 1, wherein said plurality of pastilles include pastilles having a shape selected from the group consisting of spherical, hemispherical, compressed hemispherical, lentil shaped, and oblong.

8. The method of claim 1, wherein said pastilles have a maximum dimension less than about 1 centimeter.

9. The method of claim 1, wherein said pastilles have a mass from about 0.95 mg to about 2 g.