Cement retarder and cement retardative sheet

Details Cement retarder and cement retardative sheet Cement retarder and cement retardative sheet

1998-12-23

2000-09-05

Chen, Vivian

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428355R, 428480, 428703, 528302, 528308, 5283086, 5283087, 264299, 264337, 264338, B32B 2704, B32B 2706, B32B 2736

Patent

active

061140333

ABSTRACT:
A saturated polyester obtained by a reaction of a polycarboxylic acid component comprising a polycarboxylic acid having 2 to 6 carbon atoms in the main chain (e.g. maleic anhydride), and a polyol component comprising a polyhydric alcohol having 2 to 4 carbon atoms or its condensate is used as a cement retarder. A retardative sheet can be formed by applying or impregnating a composition comprising the retarder and a tacky adhesive to a base sheet. By forming a predetermined pattern with the use of the retarder or sheet in a form, depositing a mortar composition, washing a surface of the hardened concrete, and washing out uncured mortar, a figure or a washing finished surface is formed on a surface of a concrete product.

REFERENCES:
patent: 4050943 (1977-09-01), Sondhe
patent: 4115336 (1978-09-01), Crouzet
patent: 5236975 (1993-08-01), Sekine

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