Stabilization of aqueous emulsion polymers

Details Stabilization of aqueous emulsion polymers Stabilization of aqueous emulsion polymers

1999-07-29

2002-03-26

Wu, David W. (Department: 1713)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S376000, C524S377000, C524S804000, C526S910000, C526S911000, C526S932000

Reexamination Certificate

active

06362259

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to emulsifiers to stabilize emulsion polymer latex compositions.
BACKGROUND OF THE INVENTION
Aqueous emulsion polymers are typically prepared and stabilized with various emulsifiers, such as surfactants.
However, surfactants vary in their ability to stabilize such emulsions, and more efficient stabilizing agents are always in demand.
SUMMARY OF THE INVENTION
It has now been discovered that the branched products of the reaction of
A) at least one compound of formula I
R
1
(X)
3
  (I)
 wherein each X group is a halogen atom or one X group is a halogen atom and two X groups represent an epoxy oxygen atom, which is attached to two adjacent carbon atoms in the R
1
group to form an epoxy group, and R
1
is an alkanetriyl group containing from 3 to 10 carbon atoms; and
B) at least one compound having the formula II
R(OE)
n
(OP)
m
—OH  (II)
 wherein R is a substituted or unsubstituted, saturated or unsaturated aliphatic group having from 3 to 22 carbon atoms, n is a number of from 1 to 50, preferably from 3 to 50, and m is a number from 0 to 10; wherein the mole ratio of component A) to component B) is from about 0.60/1 to about 2/1, preferably from about 0.80/1 to about 2/1, are extremely efficient and effective emulsifiers for aqueous emulsion polymers, especially vinyl acrylic emulsion polymer systems.


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patent: 3623988 (1971-11-01), Weilmer
patent: 4014843 (1977-03-01), Xanthopoulo
patent: 5008321 (1991-04-01), Hartmann et al.
patent: 5292800 (1994-03-01), Moench et al.
patent: 5827453 (1998-10-01), Gross et al.
patent: 5895605 (1999-04-01), Gross et al.
patent: 6110977 (2000-08-01), Gross et al.

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