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US 2013/0274385 A1Published application
Controlled degradation fibers
Assignee3M Innovative Properties Company
InventorsYong K. Wu, Michael D. Crandall, Rudolf J. Dams, Michelle M. Hewitt, Ignatius A. Kadoma, Siegmund Papp, Jay M. Jennen, Sasha B. Myers
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Abstract
There is provided controlled degradation fibers, and methods of making such controlled degradation fibers.
Claims15
A controlled degradation fiber comprising:
- (a) at least one first material, and
- (b) at least one second material,
- wherein the first and second materials are selected such that the fiber has a weight loss of greater than 6 wt % based on the total weight of the fiber and less than 60 wt % based on the total weight of the fiber after one week at 130° C. in the presence of water.
A method of making at least one controlled degradation fiber comprising:
- (a) providing a first material;
- (b) providing a second material;
- (c) combining the first material and the second material in an extruder;
- (d) heating the mixture of the first material and the second material;
- and
- (e) extruding the mixture through a die head to form the at least one controlled degradation fiber, wherein the at least one controlled degradation fiber has a degradation level of at least 6 wt % based on the total weight of the fiber and less than 60 wt % based on the total weight of the fiber after one week at 130° C. in the presence of water.
3 more elements
Dependencies are inferred from the claim text.