Water-repellent composite grains, method for producing same, and

Details Water-repellent composite grains, method for producing same, and Water-repellent composite grains, method for producing same, and

1995-01-24

1996-11-26

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

427202, 427204, 427205, 4272556, 428407, 428422, B05D 136, B05D 508, B32B 516, C23C 1600, C08K 904

Patent

active

055783619

ABSTRACT:
The invention relates to water-repellent composite grains. Each composite grain includes: a first grain; and a low molecular weight polytetrafluoroethylene (PTFE) covering the first grain. The first grain is higher than the PTFE in mechanical strength. With this, the composite grains are improved in mechanical strength. A water-repellent article is produced by anchoring the composite grains to a substrate through an adhesive layer formed on the substrate. The composite grains are partly exposed on the adhesive layer and partly submerged in the adhesive layer. With this, the water-repellent article is made minutely rough. The water-repellent article is improved in mechanical strength and water repellency.

REFERENCES:
patent: 4772322 (1988-09-01), Bellis
patent: 4863762 (1989-09-01), Aramaki
patent: 4961064 (1990-10-01), Hara
patent: 4983566 (1991-01-01), Wieserman
Chemical Abstracts 86:56320.
Chemical Abstracts 88:23711.
Chemical Abstracts 117:70539.

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