COMPOSITION CONTAINING OLIGOMER

Abstract

A method of treating a textile comprising (i) bringing the aqueous composition of claim 1 into contact with said textile and (ii) then evaporating said water from said aqueous composition.

Claims

1. An aqueous composition comprising water and an oligomeric composition, wherein said oligomeric composition comprises polymerized units of (a) one or more monoethylenically unsaturated epoxide-functional monomers, (b) one or more monoethylenically unsaturated alkoxysilane-functional monomers, (c) one or more chain transfer agents, and (d) one or more monoethylenically unsaturated monomers different from (a), (b), and (c).

2. The aqueous composition of claim 1, wherein said aqueous composition additionally comprises dispersed polymer particles that comprise polymer that comprises polymerized units comprising (A) one or more monoethylenically unsaturated monomers, wherein one or more of said monomers (A) is the same as one or more of said monomers (d).

3. The aqueous composition of claim 2, wherein said polymer additionally comprises polymerized units of one or more carboxyl-functional monomer.

4. A method of treating a textile comprising (i) bringing the aqueous composition of claim 1 into contact with said textile and (ii) then evaporating said water from said aqueous composition.

5. The method of claim 4, wherein said step (ii) comprises bringing said aqueous composition into contact with air that has a temperature of 80 C. or higher.

Description

EXAMPLE 1: OLIGOMERS

[0092] The following oligomer compositions were made by emulsion polymerization:

Oligomer Compositions: Amounts in Parts by Weight

[0093] (parts sometimes add up to more than 100 parts)

TABLE-US-00001 Oligomer BA STY GMA MATS VTMS nDDM MTMO O1 71 19 5 5 18.8 O2 66 19 5 10 18.8 O3 61 19 5 15 18.8 O4 56 19 5 20 18.8 O5 71 19 5 5 18.8 O6 66 19 5 10 18.8 O7 61 19 5 15 18.8 O8 56 19 5 20 18.8 O9 71 19 5 5 O10 66 19 5 10 O11 61 19 5 15 O12 56 19 5 20
The THF-soluble portion of the above oligomer compositions were characterized by size exclusion chromatography calibrated with polystyrene. Samples O1 through O8 dissolved fully in THF at 25 C. to the extent of 0.25 g of oligomer composition per 50 g of THF. Each sample produced either one or two peaks (that is, modes) in the graph of abundance versus molecular weight. The Mw of each mode is reported. Results were as follows:

Oligomer Compositions THF-Soluble Portions

[0094]

TABLE-US-00002 M.W. M.W. Oligomer of 30%.sup.(1) of 50%.sup.(2) Mw of 1st mode Mw of 2nd mode O1 1,070 1,770 1,900 22,600 O2 890 1,500 1,700 41,000 O3 903 1,440 1,700 26,000 O4 729 1,130 1,500 41,000 O5 835 1,290 3,700 none O6 741 1,140 2,600 none O7 704 1,060 2,200 none O8 647 962 2,200 none O9 3,270 4,170 2,500 173,000 O10 2,500 8,310 2,900 117,000 O11 2,210 3,420 3,000 89,000 O12 2,210 2,940 3,200 60,000 .sup.(1)Molecular Weight below which are 30% of the molecules, by weight based on the weight of the THF-soluble portion of the oligomer composition. .sup.(2)Molecular Weight below which are 50% of the molecules, by weight based on the weight of the THF-soluble portion of the oligomer composition.

EXAMPLE 2: TESTING OF SAMPLES TREATED WITH OLIGOMERS

[0095] Filter paper samples were made, treated with oligomer, and tested as described above, with cure temperature of 150 C. Results were as follows:

Tensile Properties of Samples Treated with Oligomer Only

[0096]

TABLE-US-00003 Tensile Strength (g/in) Retention Oligomer Dry Wet IPA Wet IPA O1 1206 177 596 15% 49% O2 1340 342 636 26% 47% O3 1387 279 724 20% 52% O4 1492 318 795 21% 53% O5 1724 260 842 15% 49% O6 1353 202 545 15% 40% O7 1487 197 732 13% 49% O8 1528 212 735 14% 48% O9 5462 1309 2332 24% 43% O10 4837 951 2245 20% 46% O11 4516 820 2142 18% 47% O12 4005 781 2023 19% 51%

[0097] The samples treated with oligomer alone achieved acceptable tensile strength and had acceptable retention results. It is contemplated that the amount of polymerized units of trialkoxysilyl-functional groups in the oligomer could be adjusted to improve the performance even further. It is also contemplated that, because trialkoxysilyl-functional groups react at relatively low temperatures, that samples treated with oligomer alone and dried at temperatures of 100 C. and above but below 150 C. would also achieve acceptable results for tensile strength and retention. It is expected that retention results for treatment with oligomer alone would not vary significantly as a function of drying temperature, and it is considered that such retention results would indicate that the oligomer compositions had achieved the maximum crosslinking of which they are capable under thermal cure conditions, even at temperatures as low as 100 C. It is also contemplated that it would be possible to use a reduced amount of oligomer alone and still achieve acceptable tensile strength and retention.

COMPARATIVE EXAMPLE 3: TESTING OF POLYMER ALONE

[0098] Filter paper samples were made, treated with polymer, and tested as described above, with cure temperature of 150 C. Results were as follows:

[0099] Tensile properties of samples treated with polymer only

TABLE-US-00004 Tensile Strength (g/in) Retention Polymer Dry Wet IPA Wet IPA Polymer1 5960 2119 1637 36% 27%

EXAMPLE 4: TESTING OF BLENDS OF POLYMER AND OLIGOMER

[0100] Latex Polymer1 was blended with each of the example oligomer latices to give a ratio of polymer weight to oligomer weight of 80/20. Filter paper samples were made, treated with a blend, and tested as described above, with cure temperature of 150 C. Results were as follows:

Tensile Properties of Samples Treated with Polymer/Oligomer Blends (80/20)

[0101]

TABLE-US-00005 Tensile Strength (g/in) Retention Oligomer Dry Wet IPA Wet IPA O1 5078 1950 1726 38% 34% O2 4834 1905 1690 39% 35% O3 4987 1946 1682 39% 34% O4 5400 2107 1713 39% 32% O5 5286 1804 1523 34% 29% O6 5290 1994 1703 38% 32% O7 5143 1621 1571 32% 31% O8 5453 1932 1747 35% 32% O9 5828 2201 1897 38% 33% O10 6084 2221 1737 37% 29% O11 5824 2303 1671 40% 29% O12 5932 2114 1744 36% 29%

[0102] The blends showed generally better IPA tensile strength than did Polymer1 alone. All of the blends in which the oligomer contained polymerized units of MATS or MTMO had better IPA tensile strength than Polymer1 alone did.

[0103] The samples treated with blends of polymer and oligomer achieved acceptable tensile strength and had acceptable retention results. It is contemplated that the amount of polymerized units of trialkoxysilyl-functional groups in the oligomer could be adjusted to improve the performance even further. It is also contemplated that, because trialkoxysilyl-functional groups react at relatively low temperatures, that samples treated with blends and dried at temperatures of 100 C. and above but below 150 C. would also achieve acceptable results for tensile strength and retention. It is expected that retention results for treatment with blends would not vary significantly as a function of drying temperature, and it is considered that such retention results would indicate that the oligomer compositions had achieved the maximum crosslinking of which they are capable under thermal cure conditions, even at temperatures as low as 100 C. It is also contemplated that it would be possible to use a reduced amount of blend and still achieve acceptable tensile strength and retention.