Cleaning wipe for removing contamination from an article and method of making
First Claim
1. A cleaning wipe comprising:
- a substrate having a bulk mass and a front surface; and
polyisobutylene disposed at the front surface of the substrate, wherein a substantial portion of the polyisobutylene has a molecular weight greater than approximately 30,000.
2 Assignments
0 Petitions
Accused Products
Abstract
A cleaning wipe that includes polyisobutylene (also sometimes referred to as polybutylene or as polybutene). Typically a substantial portion of the polyisobutylene has a molecular weight (MW) greater than 30,000 and in some particular applications the molecular weight is around 85,000. The polyisobutylene is generally disposed at the surface of a porous substrate, such as a non-woven or woven fabric. A method of making a cleaning wipe is provided. The method typically involves dissolving polyisobutylene in a solvent such as hexane to form a tackifier solution, soaking the substrate in the tackifier to produce a preform, and then drying the preform to produce the cleaning wipe. The cleaning wipes are typically used dry, without any liquid cleaning agent. The surface to be cleaned is wiped with a surface of the cleaning wipe at which polyisobutylene is disposed. Vigorous wiping may be used in applications where contamination is difficult to remove.
41 Citations
20 Claims
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1. A cleaning wipe comprising:
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a substrate having a bulk mass and a front surface; and polyisobutylene disposed at the front surface of the substrate, wherein a substantial portion of the polyisobutylene has a molecular weight greater than approximately 30,000. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cleaning wipe having a total dry weight, the cleaning wipe comprising:
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(a) a porous substrate, the porous substrate having a bulk mass with a plurality of voids and the porous substrate embodying a percentage of the total dry weight of the cleaning wipe, leaving a remaining percentage of dry weight; and (b) polyisobutylene disposed within a least a portion of the plurality of voids, the polyisobutylene embodying substantially all of the remaining percentage of dry weight of the cleaning wipe. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of making a cleaning wipe, the method comprising:
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(a) dissolving polyisobutylene having a molecular weight over 30,000 in a solvent to make a tackifier solution of approximately one half percent to approximately six percent polyisobutylene by weight; (b) applying the tackifier solution to a substrate to produce a preform; and (c) drying the preform to form the cleaning wipe. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification