Differential release coated articles

Details Differential release coated articles Differential release coated articles

1974-06-03

1976-02-03

Lusignan, Michael R.

Stock material or miscellaneous articles

Composite

Of silicon containing

428452, 428537, 427209, B44D 110, B32B 706, C09J 704

Patent

active

039365824

ABSTRACT:
This invention relates to low release value polyorganosiloxane coatings comprising a mixture of (a) polyorganosiloxanes having silicon-bonded hydroxyl groups on the ends of the molecule, and (b) polymethylhydrogensiloxanes having an average of at least 3 SiH groups per molecule, and high release value polyorganosiloxane coatings comprising a mixture of (a) and (b) together with polyorganosiloxanes containing triorganosiloxy end groups. The use of the improved high release value coating for coating one side of a differential release paper or laminate where the paper or laminate is stacked or rolled for storage so that there is contact with the opposite side of the differential release paper which is coated with the lower release value coating reduces the migration of high release value coating to the low value coating in contact thereby improving shelf life of the differential release paper.

REFERENCES:
patent: 3403045 (1968-09-01), Erickson et al.
patent: 3419508 (1968-12-01), Grenoble
patent: 3432333 (1969-03-01), Hurst
patent: 3503782 (1970-03-01), Ayres
patent: 3628996 (1971-12-01), Weber
patent: 3749593 (1973-07-01), Keiser

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