Process for manufacturing paper using a base copolymer that has reacted with an aldehyde as a dry strength, retention, drainage and runnability aid
US-9506200-B2 · Nov 29, 2016 · US
Fixative composition, thick stock composition and process for fixating hydrophobic and/or anionic substances on fibres
US8936698B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8936698-B2 |
| Application number | US-201214126658-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 29, 2012 |
| Priority date | Jun 30, 2011 |
| Publication date | Jan 20, 2015 |
| Grant date | Jan 20, 2015 |
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Abstract
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The present invention relates to a fixative composition and process for reducing hydrophobic and/or anionic substances in fiber-containing stock for making of paper, board or the like. The composition comprises a synthetic cationic polymer, which has a charge density of 3.0-24 meq/g, and a cationic non-degraded starch, which has charge density of 0.5-3.0 meq/g. The invention relates also to thick stock composition comprising fibers and a fixative composition according to the invention.
First claim
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The invention claimed is: 1. A fixative composition for making of paper or board, suitable for reducing hydrophobic and/or anionic substances in fibre-containing stock, which fixative composition comprises 20-80 weight % of a synthetic cationic polymer, which has a charge density of 3.0-24 meq/g, and 20-80 weight % of a cationic non-degraded starch, which has a charge density of 0.5-3.0 meq/g the composition having a total charge density in the range of 2-8 meq/g.…
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- What does patent US8936698B2 cover?
- The present invention relates to a fixative composition and process for reducing hydrophobic and/or anionic substances in fiber-containing stock for making of paper, board or the like. The composition comprises a synthetic cationic polymer, which has a charge density of 3.0-24 meq/g, and a cationic non-degraded starch, which has charge density of 0.5-3.0 meq/g. The invention relates also to thi…
- Who is the assignee on this patent?
- Karppi Asko, Lindberg Lenita, Hietaniemi Matti, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification D21H17/72. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Jan 20 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).