Sodium carboxymethylcellulose
USRE32976E · kind E · reissue
0Cited by
7References
5Claims
0Family size
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Key dates
| Filing date | Jun 17, 1987 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Jun 17, 2007 |
Classification
- Technology area (CPC —)General
Abstract
Sodium carboxymethylcellulose is disclosed wherein the average degree of substitution (DS) of carboxymethyl groups per anhydroglucose unit is in the range of 0.4 to 1.6, the number-average degree of polymerization is in the range of 100 to 1,500, and the mobility distribution (.DELTA.U) as measured by electrophoresis is represented by the following formula: .[..DELTA.U.times.10.sup.5 <(-3.0 logDS+3.20).times.10.sup.5 cm.sup.2 /sec.multidot.V..]. .Iadd..DELTA.U.times.10.sup.5 <(-3.0 logDS+3.20)cm.sup.2 /sec.multidot.V. .Iaddend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.