Storage-stable compositions comprising soil release polymers

Abstract

Compositions are described comprising A) of from 45 to 55% by weight of one or more polyesters according to the following formula (I) ##STR00001##
wherein R.sup.1 and R.sup.2 independently of one another are X(OC.sub.2H.sub.4).sub.n(OC.sub.3H.sub.6).sub.m wherein X is C.sub.1-4 alkyl, the (OC.sub.2H.sub.4) groups and the (OC.sub.3H.sub.6) groups are arranged blockwise and the block consisting of the (OC.sub.3H.sub.6) groups is bound to a COO group or are HO(C.sub.3H.sub.6), n is based on a molar average a number of from 12 to 120, m is based on a molar average a number of from 1 to 10, and a is based on a molar average a number of from 4 to 9 and
B) of from 10 to 30% by weight of one or more alcohols selected from the group consisting of ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol and butyl glycol and
C) of from 24 to 42% by weight of water, the amounts in each case being based on the total weight of the composition. The compositions may advantageously be used in laundry detergent and fabric care products.

Claims

1. A composition comprising A) 45 to 55% by weight of at least one polyester according to the following formula (I) ##STR00010## wherein R.sup.1 and R.sup.2 independently of one another are X(OC.sub.2H.sub.4).sub.n(OC.sub.3H.sub.6).sub.m wherein X is C.sub.1-4 alkyl, the (OC.sub.2H.sub.4) group and the (OC.sub.3H.sub.6) group are arranged blockwise and the block consisting of the (OC.sub.3H.sub.6) group is bound to a COO group or are HO(C.sub.3H.sub.6), n is based on a molar average and is a number of from 12 to 120, m is based on a molar average and is a number of from 1 to 10, and a is based on a molar average and is a number of from 4 to 9 and B) 10 to 30% by weight of at least one alcohol selected from the group consisting of ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol and butyl glycol, and C) 24 to 42% by weight of water, the amounts in each case being based on the total weight of the composition.

2. The composition according to claim 1, wherein in the at least one polyester of component A) according to formula (I) R.sup.1 and R.sup.2 independently of one another are H.sub.3C(OC.sub.2H.sub.4).sub.n(OC.sub.3H.sub.6).sub.m wherein the (OC.sub.2H.sub.4) group and the (OC.sub.3H.sub.6) group are arranged blockwise and the block consisting of the (OC.sub.3H.sub.6) group is bound to a COO group or are HO(C.sub.3H.sub.6), n is based on a molar average and is a number of from 40 to 50, m is based on a molar average and is a number of from 1 to 7, and a is based on a molar average and is a number of from 4 to 9.

3. The composition according to claim 1, wherein in the at least one polyester of component A) according to formula (I), a is based on a molar average and is a number of from 5 to 8.

4. The composition according to claim 3, wherein in the at least one polyester of component A) according to formula (I), a is based on a molar average and is a number of from 6 to 7.

5. The composition according to claim 1, wherein in the at least one polyester of component A) according to formula (I), m is based on a molar average and is a number of from 2 to 5.

6. The composition according to claim 1, wherein in the at least one polyester of component A) according to formula (I), n is based on a molar average and is a number of from 43 to 47.

7. The composition according to claim 6, wherein in the at least one polyester of component A) according to formula (I), n is based on a molar average and is a number of from 44 to 46.

8. The composition according to claim 7, wherein in the at least one polyester of component A) according to formula (I), n based on a molar average is 45.

9. The composition according to claim 1, wherein in the at least one polyester of component A) according to formula (I), R.sup.1 and R.sup.2 independently of one another are H.sub.3C(OC.sub.2H.sub.4).sub.n(OC.sub.3H.sub.6).sub.m wherein the (OC.sub.2H.sub.4) group and the (OC.sub.3H.sub.6) group are arranged blockwise and the block consisting of the (OC.sub.3H.sub.6) group is bound to a COO group, n is based on a molar average and is a number of from 44 to 46, m is based on a molar average and is 2, and a is based on a molar average and is a number of from 5 to 8.

10. The composition according to claim 9, wherein in the at least one polyester of component A) according to formula (I), n is based on a molar average and is 45, and a is based on a molar average and is a number of from 6 to 7.

11. The composition according to claim 1, wherein in the at least one polyester of component A) according to formula (I), R.sup.1 and R.sup.2 independently of one another are H.sub.3C(OC.sub.2H.sub.4).sub.n(OC.sub.3H.sub.6).sub.m wherein the (OC.sub.2H.sub.4) group and the (OC.sub.3H.sub.6) group are arranged blockwise and the block consisting of the (OC.sub.3H.sub.6) group is bound to a COO group, n is based on a molar average and is a number of from 44 to 46, m is based on a molar average and is 5, and a is based on a molar average and is a number of from 5 to 8.

12. The composition according to claim 11, wherein in the at least one polyester of component A) according to formula (I) n is based on a molar average and is 45, and a is based on a molar average and is a number of from 6 to 7.

13. The composition according to claim 1, wherein in the at least one alcohol of component B) is selected from the group consisting of 1,2-propylene glycol, 1,3-propylene glycol and butyl glycol.

14. The composition according to claim 13, wherein the alcohol of component B) is 1,2-propylene glycol.

15. The composition according to claim 1, comprising from 45 to 55% by weight of the at least one polyester of component A), from 15 to 25% by weight of the at least one alcohol of component B), and from 24 to 40% by weight of water of component C), the amounts in each case being based on the total weight of the composition.

16. The composition according to claim 1, further comprising at least one additive (component D).

17. The composition according to claim 16, wherein the at least one additive of component D) is selected from the group consisting of sequestering agents, complexing agents, polymers different from the at least one polyester of component A) and surfactants.

18. The composition according to claim 16, wherein the at least one additive of component D) is present in the composition in an amount of up to 10% by weight based on the total weight of the composition.

19. The composition according to claim 16, wherein the at least one additive of component D) is present in the composition in an amount of from 0.1 to 10% by weight being based on the total weight of the composition.

20. The composition according to claim 16, wherein the at least one additive of component D) is present in the composition in an amount of from 0.5 to 5% by weight based on the total weight of the composition.

21. The composition according to claim 1, consisting of the at least one polyester of component A), the at least one alcohol of component B), and water of component C).

22. The composition according to claim 1, wherein the viscosity of the composition, measured at 25 C., is of from 200 to 5 000 mPa.Math.s.

23. The composition according to claim 22, wherein the viscosity of the composition, measured at 25 C., is of from 500 to 2 000 mPa.Math.s.

Description

EXAMPLE I

(1) TABLE-US-00001 Amount Amount Raw Material [g] [mol] [Abbreviation] 101.95 0.53 DMT 84.0 1.104 PG 343.5 0.15 H.sub.3C(OC.sub.2H.sub.4).sub.45(OC.sub.3H.sub.6).sub.5OH 0.5 0.0061 NaOAc 0.2 0.0007 IPT

(2) A polyester according to formula (I) is obtained wherein R.sup.1 and R.sup.2 are H.sub.3C(OC.sub.2H.sub.4).sub.n(OC.sub.3H.sub.6).sub.m wherein the (OC.sub.2H.sub.4) groups and the (OC.sub.3H.sub.6) groups are arranged blockwise and the block consisting of the (OC.sub.3H.sub.6) groups is bound to a COO group, n is based on a molar average 45, m is based on a molar average 5, and a is based on a molar average a number of from 6 to 7.

EXAMPLE II

(3) TABLE-US-00002 Amount Amount Raw Material [g] [mol] [Abbreviation] 101.95 0.53 DMT 84.0 1.104 PG 317.4 0.15 H.sub.3C(OC.sub.2H.sub.4).sub.45(OC.sub.3H.sub.6).sub.2OH 0.5 0.0061 NaOAc 0.2 0.0007 IPT

(4) A polyester according to formula (I) is obtained wherein R.sup.1 and R.sup.2 are H.sub.3C(OC.sub.2H.sub.4).sub.n(OC.sub.3H.sub.6).sub.m wherein the (OC.sub.2H.sub.4) groups and the (OC.sub.3H.sub.6) groups are arranged blockwise and the block consisting of the (OC.sub.3H.sub.6) groups is bound to a COO group, n is based on a molar average 45, m is based on a molar average 2, and a is based on a molar average a number of from 6 to 7.
Stability Tests

(5) Solutions according to the compositions of the following table have been prepared by dissolving the polyester in the respective mixture of water and alcoholic solvent. The additive Sokalan CP 12S was dissolved in the final mixture. The mixtures were investigated with respect to their stability in a storage cabinet (+=clear solution, o=turbidity, =pronounced turbidity/precipitation). Freshly prepared samples are clear solutions.

(6) The polyester of Example I (Ex. I) has been used for the stability tests.

(7) Sokalan CP 12S (acrylic acid/maleic acid copolymer, BASF) has been used as the additive.

(8) From the table it can be seen that solutions of the soil release polyesters in water (Examples 1-4) become turbid at 45 C. already after two weeks of storage. Inventive compositions comprising 1,2-propylene glycol or butyl glycol are still clear after 4 weeks of storage at 45 C.

(9) TABLE-US-00003 1,2- clarity clarity Polyester Propylene Butyl at 45 C. at 45 C. Viscosity of Ex. I Water glycol glycol Glycerol Additive after after at 25 C. Example [wt.-%] [wt.-%] [wt.-%] [wt.-%] [wt.-%] [wt.-%] 2 weeks 4 weeks [mPa .Math. s] 1 35 65 250 2 35 64 1 260 3 40 60 850 4 50 50 3300 5 45 44 10 1 6 45 39 15 1 + + 7 45 34 20 1 + + 8 45 24 30 1 + + 9 45 44 10 1 10 45 39 15 1 + + 11 45 34 20 1 + + 12 50 40 10 + + 13 50 40 10 + + 14 50 39 10 1 + + 15 50 39 10 1 + + 16 55 34 10 + 17 55 34 10 + + 18 50 30 20 + + 1170 19 50 35 15 + + 1260 20 50 29 20 1 + + 1170 21 50 25 25 + + 870 22 50 30 20 + 285 23 40 50 10 24 45 45 10 25 40 49 10 1 26 45 44 10 1 27 50 30 20 28 50 30 20