Stabilized synthetic pulp-cellulose blends
US5051150A · kind A · utility
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20References
6Claims
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Key dates
| Filing date | Mar 20, 1989 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Mar 20, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A stabilized synthetic polyolefin pulp-cellulose blend is prepared by adding 0.1-1.0% by weight of an antioxidant (a hindered phenolic and/or phosphite antioxidant) to a solution of a polyolefin and solvent wherein the antioxidant is homogenously dispersed therein, forming the polyolefin into a polyolefin pulp, and then mixing the polyolefin pulp with from about 55 to about 90% by weight of a wood pulp to produce the blend. This blend with improved higher ignition temperature is used in the absorbent products industry as an absorbent core, when the blend is heated sufficiently to melt the polyolefin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.