Paper making and fiber liberation – Processes and products – Plural fiber containing
Patent
1979-02-28
1981-06-23
Chin, Peter
Paper making and fiber liberation
Processes and products
Plural fiber containing
162182, D21H 512
Patent
active
042749174
ABSTRACT:
Paper having improved properties, particularly tear strength, is prepared from a furnish containing at least 90 weight % of cellulose fibers and up to 10 weight % of olefin polymer fibrils. The fibrils are prepared by a differential temperature process of the type described in U.S. Pat. No. 4,013,751, are refined in isopropanol, and are treated with an aqueous solution of polyvinyl alcohol to sorb at least 1.0 weight % of polyvinyl alcohol on the fibrils. The fibrils are prepared from an olefin polymer having a weight average molecular weight of at least one (1) million.
REFERENCES:
patent: 3848027 (1974-11-01), Forbess et al.
patent: 4013751 (1977-03-01), Davis et al.
patent: 4028452 (1977-06-01), Driscoll
patent: 4049492 (1977-09-01), Lare
patent: 4134931 (1979-01-01), Hayes et al.
Boehme, deceased Robert E.
Boehme, sole beneficiary by Helen J.
Murphy Clarence R.
Thackabeery S. Paul
Chin Peter
Gulf Oil Corporation
Kelly Richard L.
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