Acid tolerant calcium carbonate composition and uses therefor

Details Acid tolerant calcium carbonate composition and uses therefor Acid tolerant calcium carbonate composition and uses therefor

1996-03-13

1998-01-27

Marcheschi, Michael

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106464, 106499, 1621811, 162183, 1621812, C09C 102

Patent

active

057117993

ABSTRACT:
An improved form of calcium carbonate which is acid tolerant to enable its use as a filler material in the making of neutral to weakly acid paper, and a process for producing this acid tolerant calcium carbonate are provided. This acid tolerant calcium carbonate comprises a mixture of calcium carbonate with at least about 0.1 percent, based on the dry weight of the calcium carbonate, of sodium aluminate together with at least about 0.1 percent, based on the dry weight of the calcium carbonate, of one or more weak acids.

REFERENCES:
patent: 3849149 (1974-11-01), Swift et al.
patent: 4242318 (1980-12-01), Brahm et al.
patent: 5000791 (1991-03-01), Tokarz et al.
patent: 5043017 (1991-08-01), Passaretti
patent: 5266163 (1993-11-01), Dessauer
patent: 5531821 (1996-07-01), Wu
Arnson, T.R. (1982) Tappi, vol. 65:125-30 "The Chemistry of Al Salts in Papermaking" (no month).
Thomas, R.A. (1979) Tappi, pp.29-32 "Sodium Aluminate in Paper Manufacture," Vinings Chemical Co. (no month).

Affiliated with

Also associated with

Rating

Acid tolerant calcium carbonate composition and uses therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acid tolerant calcium carbonate composition and uses therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acid tolerant calcium carbonate composition and uses therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-338627