Method for waterproofing paper

Details Method for waterproofing paper Method for waterproofing paper

1980-10-15

1982-09-14

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Of silicon containing

427387, 427391, 4283117, 428452, B32B 904, A21D 1300

Patent

active

043496105

ABSTRACT:
A method for improving the water repellency of a naturally porous, moisture-containing paper web by treating the web with a coating composition containing as its active coating ingredient an alkyl alkoxysiloxane which reacts with the moisture contained in the paper web to produce a polymer and an alcohol as a by-product. The polymer substantially improves the water repellency of the paper web while the web retains substantially the porosity and the strength characteristics it had in the untreated state.

REFERENCES:
patent: 2306222 (1942-12-01), Patnode
patent: 2386259 (1945-10-01), Norton
patent: 2412470 (1946-12-01), Norton
patent: 2961338 (1960-11-01), Robbart
patent: 2995470 (1961-08-01), Robbart
patent: 3856558 (1974-12-01), Robbart
patent: 4170690 (1979-10-01), Armbruster et al.

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