Back to results
US 6,602,847 B2Granted
Laundry treatment granule and detergent composition containing laundry treatment granule
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsWilliam Derek Emery, Christopher Clarkson Jones
Life of this patent
Estimating the term…
Abstract
In order to protect a fabric rebuild polymer which undergoes, during a laundry treatment process, a chemical change by which the affinity of the rebuild agent for the fabric is increased, from hydrolysis on storage, the fabric rebuild agent is in the form of a granule comprising fabric rebuild agent, acidic binder, neutral filler and optionally acidic filler. The granule can be post-dosed to a powder detergent composition.
Claims22
A laundry treatment granule comprising:
- (a) 50-90% by weight based on the granule of a water-soluble or water-dispersible rebuild agent for deposition onto a fabric during a laundry treatment process wherein the rebuild agent undergoes during the laundry treatment process, a chemical change by which change the affinity of the rebuild agent for the fabric is increased, said chemical change resulting in the loss or modification of one or more groups covalently bonded to be pendant to a polymeric backbone of the rebuild agent via an ester linkage, the ester-linked group(s) being selected from monocarboxylic acid esters,
- (b) 0.3-10% by weight based on the granule of acidic binder, and
- (c) 5-30% by weight based on the granule of neutral filler.
A laundry treatment granule comprising:
- (a) 50-90% by weight based on the granule of a water-soluble or water-dispersible rebuild agent for deposition onto a fabric during a laundry treatment process wherein the rebuild agent undergoes during the laundry treatment process, a chemical change by which change the affinity of the rebuild agent for the fabric is increased, the chemical change occurring in or to a group or groups covalently bonded to be pendant on a polymeric backbone of the rebuild agent and which backbone comprises cellulose units or other β-1,4 linked polysaccharide units, the average degree of substitution of the total of all groups pendant on the saccharide rings of the backbone being from 0.3 to 3.
- (b) 0.3-10% by weight based on the granule of acidic binder, and (c) 5-30% based on the granule of neutral filler.
Dependencies are inferred from the claim text.