US 2026/0201279 A1Published application

Biodegradable graft polymers for dye transfer inhibition

AssigneeBASF SE

InventorsThomas WEISS, Swati DE, Florian SCHOEN, Jan Ole MUELLER

Life of this patent

Estimating the term…

Loading patent…

Abstract

Graft polymers, their preparation and use such as in cleaning compositions, wherein the graft polymers comprise as polymer backbone (A) a polyalkylene oxide ester polymer with a weight average molecular weight Mw of 500 to 50 000 g/mol, comprising 10 to 560 ether groups and 2 to 51 ester groups, which are interconnected with alkylene groups, which is significantly better biodegradable than conventional polyalkylene oxide polymers, and polymeric side chains grafted onto the polymer backbone A, wherein said polymeric sidechains (B) are obtainable by co-polymerization of at least one monomer selected from (B1), and (B2), with the monomers (B1) being at least one vinyl ester monomer, (B2) with (B2a) and optionally (B2b), with (B2a) at least one olefinically unsaturated amine-containing monomer, preferably being 1-vinylimidazole or its derivatives, and optional (B2b) at least one further nitrogen-containing monomer, being preferably a vinyllactame-monomer. The graft polymer is preferably employed as dye transfer inhibitor, more preferably in laundry compositions.

Claims39

Dependent claims

A graft polymer comprising

(A) a polymer backbone as a graft base, wherein said polymer backbone (A) is a polyalkylene oxide ester polymer with a weight average molecular weight Mw of 500 to 50 000 g/mol and a polydispersity PD of 2 to 6, comprising 10 to 560 ether groups and 2 to 51 ester groups, which are interconnected with alkylene groups, wherein the polyalkylene oxide ester polymer contains 1 to 51 structural elements of the general formula (I)
in which
the —O— unit at the left side is bound to a —CO— unit of an adjacent unit of the polymer, forming an ester unit,
the —CO— unit at the right side is bound to a —O— unit of an adjacent unit of the polymer, forming a further ester unit,
R1, R2, R3, R4, R5 represent independent of each other a hydrogen atom or a C1-12 alkyl group,
a, b, c, d, e represent independent of each other an integer of 0 or 1, whereas the sum of a to e is 1 to 5, and
X represents a polyalkylene oxide unit with 4 to 100 alkylene oxide units, whereby the alkylene oxide units contain independent of each other 2 to 6 carbon atoms in the direct chain between two —O— units, whereby each of the carbon atoms in the direct chain between two —O— units contain independent of each other either two hydrogen atoms, or one hydrogen atom and one C1-12 alkyl group,
and
(B) polymeric sidechains grafted onto the polymer backbone (A), wherein said polymeric sidechains (B) are obtainable obtained by polymerization of at least one monomer (B2a) and optionally at least one of (B1) and (B2b), with the monomers
(B1) being at least one vinyl ester monomer,
and
(B2) with
(B2a) being at least one olefinically unsaturated amine-containing monomer,
and
(B2b) optionally at least one further nitrogen-containing monomer,
wherein
optionally the molecular weight of the polymer backbone (B) as MW in g/mol is within 500 to 50000;
the amount of the polymer backbone (A) is from 30 to 90;
and
the amount of polymeric side chains (B) is from 10 to 70;
and
the amount of (B1) is from 0 to 50;
and
the amount of (B2) is from more than 10 to 60;
each of the amounts in weight percent based on the total weight of the graft polymer;
and
the amount of (B2a) in weight percent based on the total amount of monomers (B2) is 5 to 100;
and
the amount of (B2b) in weight percent is equal to (100% of the amount of (B2)) minus (the amount of (B2a)).

26 more elements

A graft polymer comprising

(A) a polymer backbone as a graft base, wherein said polymer backbone (A) is obtained by condensation comprising at least one of i) to iii) with
i) diols of poly alkylene oxides (PAG-DO),
ii) di-carboxylic acids of PAG (PAG-DC),
iii) mono-carbonic acid mono-ols of PAG (PAG-MC),
wherein either at least a compound selected from iii) is present, or—when only i) and ii) are present—at least two internal ester-groups are present, and
with the PAG being obtained by polymerization of at least one monomer being selected from 1,2-alkylene oxides such as ethylene oxide, 1,2-propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, 1,2-pentene oxide or 2,3-pentene oxide;
from 1,4-diols or their cyclic or oligomeric analogs, or the PAG being based on polymeric ethers of such 1,4-diols;
from 1,6-diols or their cyclic or oligomeric analogs, or the PAG being based on polymeric ethers of such 1,6-diols;
or any of their mixtures in any ratio, either as blocks of certain polymeric units, or as statistical polymeric structures, or a polymers comprising one or more homo-blocks of a certain monomer and one or more statistical blocks comprising more than one monomer, and any combination thereof such as polymers having several different blocks of different monomers, or blocks of two different monomers, blocks of statistical mixtures of two or more monomers etc.,
and optionally other non-polymeric di-carboxylic acid compounds which may be present in addition to compound ii), and
and
(B) polymeric sidechains grafted onto the polymer backbone (A), wherein said polymeric sidechains (B) are obtainable by polymerization of at least one monomer (B2a) and optionally at least one of (B1) and (B2b), with the monomers
(B1) being at least one vinyl ester monomer,
and
(B2) with
(B2a) being at least one olefinically unsaturated amine-containing monomer,
and
(B2b) optionally at least one further nitrogen-containing monomer,
wherein
optionally the molecular weight of the polymer backbone (A) as MW in g/mol is within 500 to 50000 and preferably at least 1000, and preferably not more than 25000, even more preferably not more than 10000,
the amount of the polymer backbone (A) is from 30 to 90, preferably 50 to 90, more preferably 50 to 80, even more preferably 50 to 70;
and
the amount of polymeric side chains (B) is from 10 to 70, preferably 10 to 50, more preferably 20 to 50, even more preferably 30 to 50;
and
the amount of (B1) is from 0 to 50, preferably 1 to 50, more preferably 1 to 30, even more preferably 10 to 30;
and
the amount of (B2) is from more than 10 to 60, preferably 10 to 50, more preferably 10 to 40, even more preferably 10 to 30;
each of the amounts before in weight percent based on the total weight of the graft polymer;
and
the amount of (B2a) in weight percent based on the total amount of monomers (B2) is 5 to 100;
and
the amount of (B2b) in weight percent is equal to (100% of the amount of (B2)) minus (the amount of (B2a)).

29 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/137,674Filed 8 Dec 2023
Priority: EP 22212899.312 Dec 2022
Published: 16 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

C08G 63/672
Derived from polycarboxylic acids and polyhydroxy compounds: dicarboxylic acids and dihydroxy compounds
C11D 3/3788
Polymers: graft polymers
C08F 283/01
Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G: on to unsaturated polyesters
C08F 283/02
Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G: on to polycarbonates or saturated polyesters