Stock material or miscellaneous articles – Composite – Of carbohydrate
Patent
1980-12-05
1983-06-14
Ives, P. C.
Stock material or miscellaneous articles
Composite
Of carbohydrate
428541, 428514, 428 36, 428 83, 427254, 162125, 162221, 162150, 162182, 1621577, B32B 2304, D21F 1100
Patent
active
043883788
ABSTRACT:
A wet-felted mat of wood fibers is acetylated by coating the mat with a quantity of acetic anhydride ranging from 5 to 70% by volume of the mat and heating the mat at a temperature of from 150.degree. to 300.degree. F. while confining substantially all of the acetic anhydride within the mat for about 20 to 120 minutes. The acetylated mat is pressed into hardboard which may be bent into a variety of loops, spirals, helices, and other curvilinear shapes to make articles of furniture, protective packaging products and the like.
REFERENCES:
patent: 2099598 (1937-11-01), Carter
patent: 2215244 (1940-09-01), Linzell
patent: 2375450 (1945-05-01), Walter
patent: 2417995 (1947-03-01), Stamm et al.
patent: 2716617 (1955-08-01), Austin, Jr. et al.
patent: 3094431 (1963-06-01), Goldstein et al.
Abstract; C.A. 85: 22958a; Flexural Strength of Boards from Acetylated Wood Fibers; Issled. Obl. Khim. Drev., Tezizy Dokl. Konf. Molodykh UCH 1st, p. 51, (1975); Micane, L.; Bekere, M.
Abstract; C.A. 90: 123387x; Certain Factors Affecting the Quality of Boards Produced from Acetylated Wood Fibers; Lat v. Lauksaimn. Akad Rasti 1978, 163, 31-35; Bekere, M.; Svalbe, K.; Ozolina, I.
Abstract; C.A. 90: 170418t; Character of Hardboards from Acetylated Asplund Pulp; Mokuzai Gokkaishi 1979, 25 (3), 203-208; Sudo, Kenichi.
Dimensional Stabilization of Hardboard by Combined Acetylation and Heat Treatment; Svensk. Papperstidning 68,583 (1965); Klinga, L. O.; Tarkow, H.; and Back, E. L.
Dimensional Stabilization of Hardboard by Acetylation; Tappi 49, (1), 23 (1966); Klinga, L. O.; and Tarkow, H.
House Cynthia B.
Leichti Robert J.
Didrick Robert M.
Ives P. C.
Kurlandsky Samuel
Robinson Robert H.
United States Gypsum Company
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