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US 7,030,187 B2Granted
Cellulose copolymers that modify fibers and surfaces and methods of making same
AssigneeSymyx Technologies, Inc.
InventorsDominique Charmot, Manikandan Jayaraman, Han Ting Chang, Paul Mansky, Wilfried Blokzijl
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Abstract
Cellulosic polymers, copolymers and grafts, are disclosed that adhere to fibers and surfaces during an aqueous treatment process. The cellulosic polymers having grafts and/or co-blocks are prepared using living-type free radical polymerization techniques, which provides control over the degree of substitution and graft/co-block composition and structure. These cellulosic polymers allow for the modification of fibers and surfaces to provide a desired effect.
Claims2
A polymer comprising,
- a polymeric backbone selected from the group consisting of cellulose, modified cellulose and hemi-cellulose;
- at least one pendant polymeric chain attached to said polymeric backbone, wherein on average there are between 0.5 and 25 pendant polymeric chains attached to said polymeric backbone at a site selected from the group consisting of a terminus of said polymeric backbone and a mid-point of said polymeric backbone and combinations thereof;
- wherein said at least one pendant polymeric chain has a number average molecular weight of from 100 to 10,000,000 Da;
- and
- wherein said cellulosic backbone has a number average molecular weight of from about 3,000 to about 100,000.
2 more elements
Dependencies are inferred from the claim text.