Low-formaldehyde latex binder

Details Low-formaldehyde latex binder Low-formaldehyde latex binder

1993-03-24

1994-11-08

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524522, 524523, 524560, 526316, 428288, 428290, 428507, 428511, C08L 300, C08L 3300

Patent

active

053627989

ABSTRACT:
A latex binder which has very low or nil amounts of aldehyde such as formaldehyde is made utilizing a compound having the formula: ##STR1## wherein R.sup.1 is generally an alkyl having from 1 to 6 carbon atoms, with methyl being preferred; wherein R.sup.2 and R.sup.3, independently, is preferably hydrogen, or allyl, or an alkyl having from 1 to 12 carbon atoms, or an alkyl-substituted aromatic having from 7 to 15 carbon atoms, wherein R.sup.4 is an alkylene having from 1 to 4 carbon atoms, with ethylene being preferred; and wherein R.sup.5 is hydrogen or an alkyl having from 1 to 4 carbon atoms, with methyl being preferred. The latex binder is generally an emulsion or latex copolymer made from at least one or more conjugated dienes having a total of from 4 to 10 carbon atoms with butadiene being preferred and one or more vinyl-substituted aromatics having from 8 to 14 carbon atoms, with styrene being preferred. The amount of the above formulation compound is generally from at least 0.05 to about 7 parts by weight based upon 100 parts by weight of the one or more conjugated dienes and the vinyl-substituted aromatic monomers. The latex binder is generally free of crosslinking agents, has good stability, and can be used to bind a paper-coating composition to a cellulose substrate, or to bind nonwoven fibers together. The latex binder generally contains 10 parts or less by weight of formaldehyde per million parts by weight and desirably contains nil, that is, no detectable amounts of formaldehyde therein, even after extended periods of time. e.g., 28 days.

REFERENCES:
patent: 4966791 (1990-10-01), Kissel et al.
patent: 5028655 (1991-07-01), Stack
patent: 5030507 (1991-07-01), Mudge et al.
patent: 5143954 (1992-09-01), Hutton et al.
An article entitled "The Condensation Products of Aldehydes and Aldol-sensitive .beta.-Dicarbonyl Compounds .sup.1a," B. D. Wilson, Feb., 1963, vol. 28, pp. 314-320.

Affiliated with

Also associated with

Rating

Low-formaldehyde latex binder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low-formaldehyde latex binder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-formaldehyde latex binder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1783150