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US 6,306,250 B1Granted
Method of removing capsule oils from self-copying paper
AssigneeNopco Paper Technology Holding AS
InventorsBernhard Nellessen, Klaus Hornfeck, Berthold Schreck, Sabine Heinen, Bodo Hilterhaus, Dieter Baumgarten
Life of this patent
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Abstract
A process for removing capsule oils from carbonless copy paper involving: (a) providing carbonless copy paper containing capsule oils; and (b) disintegrating the carbonless copy paper in the presence of an alkoxylated C12-14 alcohol to form a stock suspension.
Claims9
A process for removing capsule oils from carbonless copy paper comprising:
- (a) providing carbonless copy paper containing capsule oils;
- (b) disintegrating the carbonless copy paper in the presence of an alkoxylated C12-14 alcohol to form a stock suspension;
- and
- (c) removing the capsule oils from the stock suspension.
1 more element
A process for removing capsule oils from carbonless copy paper comprising:
- (a) providing carbonless copy paper containing capsule oils;
- (b) disintegrating the carbonless copy paper in the presence of an alkoxylated C12-14 alcohol to form a stock suspension;
- (c) removing the capsule oils from the stock suspension;
- (d) washing the stock suspension to form a washed stock suspension;
- and
- (e) subjecting the washed stock suspension to a flotation process, wherein the disintegrating, washing and flotation are all conducted in the presence of an alkoxylated C12-14 alcohol.
3 more elements
Dependencies are inferred from the claim text.