Low-formaldehyde, self-crosslinking polymer latex composition
First Claim
1. A low-formaldehyde polymer latex composition, the composition comprising:
- at leat one polymer latex, andat least one formaldehyde-scavenging agent selected froma) a compound having the formula ##STR11## wherein A is selected from O, NH, and NR2 ;
R1 is selected from H, 3-allyloxy-2-hydroxypropyl, methacryloyl, acryloyl and methacryloxyaceto; and
R2 is 3-allyloxy-2-hydroxypropyl when R'"'"' is 3-allyoxy-2-hydroxypropyl;
b) a compound having the formula R3 CH2 R4, whereinR3 and R4 are both --C(O)OR5 ;
R3 is CH3 C(O)-- and R4 is --C(O)OR5 ;
R3 is --CN and R4 is selected from --C(O)NH2 and --C(O)OR5 ;
orR3 is CH3 C(O)-- and R4 is --C(O)OCH2 CH2 OC(O)C(CH3)═
CH2 ; and
R5 is a C1 -C6 hydrocarbon radical;
c) a compound having the formula
space="preserve" listing-type="equation">NCCH.sub.2 C(O)OCH.sub.2 --CH--(CH.sub.2 CH.sub.2 OC(O)CH.sub.2 CN).sub.2 ;
d) hydroxylamine;
e) salts of hydroxylamine with an acid, the acid having an acid dissociation constant the negative logarithm of which is no greater than about 5.0; and
f) the polymerized residue of a compound having the formula ##STR12## wherein A is selected from O, NH, and NR2 ;
R6 is selected from 3-allyloxy-2-hydroxypropyl, methacryloyl, acryloyl or methacryloxyaceto; and
R2 is 3-allyloxy-2-hydroxypropyl when R'"'"' is 3-allyoxy-2-hydroxypropyl; and
g) the polymerized residue of a compound having the formula
space="preserve" listing-type="equation">CH.sub.3 C(O)--CH.sub.2 --C(O)OCH.sub.2 CH.sub.2 OC(O)C(CH.sub.3)═
CH.sub.2.
1 Assignment
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Accused Products
Abstract
A low-formaldehyde polymer latex composition includes a formaldehyde-scavenging agent selected from
a) a compound having the formula ##STR1## wherein A is selected from O, NH, and NR2 ; R1 is selected from H, 3-allyloxy-2-hydroxypropyl, methacryloyl, acryloyl and methacryloxyaceto; and R2 is 3-allyloxy-2-hydroxypropyl when R'"'"' is 3-allyloxy-2-hydroxypropyl;
b) a compound having the formula R3 CH2 R4, wherein
R3 and R4 are both --C(O)OR5 ;
R3 is CH3 C(O)-- and R4 is --C(O)OR5 ;
R3 is --CN and R4 is selected from --C(O)NH2 and --C(O)OR5 ; or
R3 is CH3 C(O)-- and R4 is --C(O)OCH2 CH2 OC(O)C(CH3)═CH2 ; and
R5 is a C1 -C6 hydrocarbon radical;
c) a compound having the formula
NCCH.sub.2 C(O)OCH.sub.2 --CH--(CH.sub.2 CH.sub.2 OC(O)CH.sub.2 CN).sub.2 ;
d) hydroxylamine;
e) salts of hydroxylamine with an acid, the acid having an acid dissociation constant the negative logarithm of which is no greater than about 5.0; and
f) the polymerized residue of a compound having the formula ##STR2## wherein A is selected from O, NH, and NR2 ; R6 is selected from 3-allyloxy-2-hydroxypropyl, methacryloyl, acryloyl or methacryloxyaceto; and R2 is 3-allyloxy-2-hydroxypropyl when R'"'"' is 3-allyloxy-2-hydroxypropyl; and
g) the polymerized residue of a compound having the formula
CH.sub.3 C(O)--CH.sub.2 --C(O)OCH.sub.2 CH.sub.2
OC(O)C(CH3)═CH2.
The composition can also include a self-crosslinking polymer latex having N-methylol functional groups, such as from polymerized residues of N-methylolacrylamide or N-methylolmethacrylamide. In this case, the composition may be of use as a binder for textiles or non-woven materials. The scavenging agent reduces formaldehyde evolution during drying and curing of these compositions.
55 Citations
10 Claims
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1. A low-formaldehyde polymer latex composition, the composition comprising:
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at leat one polymer latex, and at least one formaldehyde-scavenging agent selected from a) a compound having the formula ##STR11## wherein A is selected from O, NH, and NR2 ;
R1 is selected from H, 3-allyloxy-2-hydroxypropyl, methacryloyl, acryloyl and methacryloxyaceto; and
R2 is 3-allyloxy-2-hydroxypropyl when R'"'"' is 3-allyoxy-2-hydroxypropyl;b) a compound having the formula R3 CH2 R4, wherein R3 and R4 are both --C(O)OR5 ; R3 is CH3 C(O)-- and R4 is --C(O)OR5 ; R3 is --CN and R4 is selected from --C(O)NH2 and --C(O)OR5 ;
orR3 is CH3 C(O)-- and R4 is --C(O)OCH2 CH2 OC(O)C(CH3)═
CH2 ; andR5 is a C1 -C6 hydrocarbon radical; c) a compound having the formula
space="preserve" listing-type="equation">NCCH.sub.2 C(O)OCH.sub.2 --CH--(CH.sub.2 CH.sub.2 OC(O)CH.sub.2 CN).sub.2 ;d) hydroxylamine; e) salts of hydroxylamine with an acid, the acid having an acid dissociation constant the negative logarithm of which is no greater than about 5.0; and f) the polymerized residue of a compound having the formula ##STR12## wherein A is selected from O, NH, and NR2 ;
R6 is selected from 3-allyloxy-2-hydroxypropyl, methacryloyl, acryloyl or methacryloxyaceto; and
R2 is 3-allyloxy-2-hydroxypropyl when R'"'"' is 3-allyoxy-2-hydroxypropyl; andg) the polymerized residue of a compound having the formula
space="preserve" listing-type="equation">CH.sub.3 C(O)--CH.sub.2 --C(O)OCH.sub.2 CH.sub.2 OC(O)C(CH.sub.3)═
CH.sub.2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of reducing formaldehyde evolution from aqueous polymer latex compositions, the method comprising adding to the composition a formaldehyde-scavenging agent selected from
a) a compound having the formula ##STR13## wherein A is selected from O, NH, and NR2 ; - R1 is selected from H, 3-allyloxy-2-hydroxypropyl, methacryloyl, acryloyl and methacryloxyaceto; and
R2 is 3-allyloxy-2-hydroxypropyl when R'"'"' is 3-allyloxy-2-hydroxypropyl;b) a compound having the formula R3 CH2 R4, wherein R3 and R4 are both --C(O)OR5 ; R3 is CH3 C(O)-- and R4 is --C(O)OR5 ; R3 is --CN and R4 is selected from --C(O)NH2 and --C(O)OR5 ;
orR3 is CH3 C(O)-- and R4 is --C(O)OCH2 CH2 OC(O)C(CH3)═
CH2 ; and5is a C1 -C6 hydrocarbon radical; c) a compound having the formula
space="preserve" listing-type="equation">NCCH.sub.2 C(O)OCH.sub.2 --CH--(CH.sub.2 CH.sub.2 OC(O)CH.sub.2 CN).sub.2 ;d) hydroxylamine; e) salts of hydroxylamine with an acid, the acid having an acid dissociation constant the negative logarithm of which is no greater than about 5.0; and f) the polymerized residue of a compound having the formula ##STR14## wherein A is selected from O, NH, and NR2 ;
R6 is selected from 3-allyloxy-2-hydroxypropyl, methacryloyl, acryloyl or methacryloxyaceto; and
R2 is 3-allyloxy-2-hydroxypropyl when R'"'"' is 3-allyloxy-2-hydroxypropyl; andg) the polymerized residue of a compound having the formula
space="preserve" listing-type="equation">CH.sub.3 C(O)--CH.sub.2 --C(O)OCH.sub.2 CH.sub.2 OC(O)C(CH.sub.3)═
CH.sub.2.
- R1 is selected from H, 3-allyloxy-2-hydroxypropyl, methacryloyl, acryloyl and methacryloxyaceto; and
Specification
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- Resources
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Current AssigneeRohm and Haas Company (Dow, Inc.)
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Original AssigneeRohm and Haas Company (Dow, Inc.)
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InventorsHutton, Thomas W., Novak, Ronald W.
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Primary Examiner(s)Michl, Paul R.
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Assistant Examiner(s)SZEKELY, PETER A
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Application NumberUS07/618,759Time in Patent Office644 DaysField of Search524/106, 524/314, 524/317, 524/206, 524/209, 524/247, 524/558US Class Current524/106CPC Class CodesC08L 2666/28 Non-macromolecular organic ...C09D 157/00 Coating compositions based ...
