Fragranced pastille for laundry application
View Patent ↗Provided herein are solid compositions for fabric treatment; unit dose laundry detergent compositions containing solid compositions for fabric treatment; and process of their making and using, e.g., for treating textiles.
1. A process of making a solid composition for fabric treatment, comprising:
forming a mixture by mixing and melting a block copolymer and a dry powder of encapsulated fragrance;
shaping or allowing the mixture to shape; and
hardening the shaped mixture;
wherein the block copolymer has a Formulae (I), (II), (III) or (IV),
R 1 O-(EO) x -(PO) y -R 2 (I),
R 1 O—(PO) x -(EO) y -R 2 (II),
R 1 O-(EO) o -(PO) p -(EO) q -R 2 (III),
R 1 O—(PO) o -(EO) p -(PO) q -R 2 (IV),
or a combination thereof;
wherein EO is a —CH 2 CH 2 O— group, and PO is a —CH(CH 3 )CH 2 O— group;
R 1 and R 2 independently is H or a C 1 -C 22 alkyl group;
x, y, o, p, and q are independently 1-100;
provided that the sum of x and y is greater than 35, and the sum of o, p and q is greater than 35;
wherein the block copolymer is present in an amount of about 75% by weight to about 99% by weight of the composition; and
wherein the dry powder of encapsulated fragrance is present in an amount from about 0.01% by weight to about 10% by weight of the composition.
2. The process of claim 1 , wherein said forming a mixture comprises melting the block copolymer and then adding the dry powder of encapsulated fragrance.
3. The process of claim 1 , further comprising adding a polyethylene glycol to the melted mixture, wherein the polyethylene glycol has an average molecular weight from about 1000 to about 8500.
4. The process of claim 3 , wherein the weight ratio of polyethylene glycol to the block copolymer in the composition ranges from about 20:1 to about 1:1.
5. The process of claim 1 , wherein the dry powder of encapsulated fragrance comprises starch, corn syrup solids, or a combination thereof.
6. The process of claim 1 , further comprising adding an encapsulated fragrance slurry, a free fragrance, or a combination thereof to the mixture.
7. The process of claim 1 , further comprising adding a colorant to the melted mixture.
8. The process of claim 1 , further comprising adding a glycol fatty acid ester to the mixture.
9. The composition of claim 8 , wherein the glycol fatty acid ester is a glycol monostearate or a glycol distearate.
10. The process of claim 1 , further comprising aerating the molten mixture to incorporate air or gaseous material into the mixture, before shaping or allowing the mixture to shape; and hardening the shaped mixture.
11. The process of claim 1 , further comprising cooling the mixture to a processing temperature above the glass transition temperature of the mixture and below the melting temperature of the mixture.
12. The process of claim 1 , wherein the solid composition is spherical, hemi-spherical, lentil shaped, or oblong shaped.
13. A solid composition for fabric treatment prepared by the process of claim 6 .
14. A solid composition for fabric treatment prepared by the process of claim 1 .
15. A process of making a solid composition for fabric treatment, comprising:
forming a mixture by mixing and melting a polyethylene glycol having an average molecular weight from about 1000 to about 8500, a dry powder of encapsulated fragrance, and a block copolymer;
shaping or allowing the mixture to shape; and
hardening the shaped mixture;
wherein the polyethylene glycol is present in an amount from about 50% by weight to about 95% by weight of the composition;
wherein the dry powder of encapsulated fragrance is present in an amount from about 0.01% by weight to about 10% by weight of the composition; and
wherein the block copolymer is present in an amount of about 5% by weight to about 50% by weight of the composition;
wherein the block copolymer has a Formulae (I), (II), (III) or (IV),
R 1 O-(EO) x -(PO) y -R 2 (I),
R 1 O—(PO) x -(EO) y -R 2 (II),
R 1 O-(EO) o -(PO) p -(EO) q -R 2 (III),
R 1 O—(PO) o -(EO) p -(PO) q -R 2 (IV),
or a combination thereof;
wherein EO is a —CH 2 CH 2 O— group, and PO is a —CH(CH 3 )CH 2 O— group;
R 1 and R 2 independently is H or a C 1 -C 22 alkyl group;
x, y, o, p, and q are independently 1-100;
provided that the sum of x and y is greater than 35, and the sum of o, p and q is greater than 35.
16. The process of claim 15 , the weight ratio of polyethylene glycol to the block copolymer in the composition ranges from about 2:1.
17. The process of claim 15 , wherein the polyethylene glycol has an average molecular weight from about 2000 to about 6000.
18. The process of claim 15 , wherein the dry powder of encapsulated fragrance comprises starch, corn syrup solids, or a combination thereof.
19. The process of claim 15 , further comprising adding an encapsulated fragrance slurry, a free fragrance, or a combination thereof to the mixture.
20. A solid composition for fabric treatment prepared by a process comprising the steps of:
forming a mixture by mixing and melting a block copolymer and a dry powder of encapsulated fragrance;
shaping or allowing the mixture to shape; and
hardening the shaped mixture;
wherein the block copolymer has a Formulae (I), (II), (III) or (IV),
R 1 O-(EO) x -(PO) y -R 2 (I),
R 1 O—(PO) x -(EO) y -R 2 (II),
R 1 O-(EO) o -(PO) p -(EO) q -R 2 (III),
R 1 O—(PO) o -(EO) p -(PO) q -R 2 (IV),
or a combination thereof;
wherein EO is a —CH 2 CH 2 O— group, and PO is a —CH(CH 3 )CH 2 O— group;
R 1 and R 2 independently is H or a C 1 -C 22 alkyl group;
x, y, o, p, and q are independently 1-100;
provided that the sum of x and y is greater than 35, and the sum of o, p and q is greater than 35.