29-08-2019 дата публикации
Номер: US20190264137A1
Принадлежит:
Solid rinse aid compositions and methods of making and using the same are disclosed. Solid rinse aid compositions include in a single concentrate composition a pyrithione preservative system to replace conventional preservatives in the isothiazolinone family, such as chloromethylisothiazolinone. Beneficially, the pyrithione preservative systems eliminate the need for any personal protective equipment to handle the solid rinse aid compositions. Methods of making and use using the rinse aids are also disclosed. 1. A solid rinse aid composition comprising:a) from about 0.05 wt-% to about 20 wt-% of a pyrithione preservative;b) from about 5 wt-% to about 80 wt-% of hardening agent comprising a solid acid;{'sub': 2', '2', 'n', '1', '12, 'c) two or more nonionic surfactants comprising one or more alcohol alkoxylates having the formula R—O—(CHCHO)—H, wherein R is a (C-C) alkyl group and n is an integer in the range of 1 to 100, and an ethylene oxide-propylene oxide (EO/PO) copolymer; and'}d) additional functional ingredients, 'aqueous use solution having a neutral to acidic pH.', 'wherein the composition is a solid concentrate, and the solid concentrate generates a stable and'}2. The rinse aid composition of claim 1 , wherein an additional hardening agent or the additional functional ingredients comprise short chain alkyl benzene and/or alkyl naphthalene sulfonates.3. The rinse aid composition of claim 2 , wherein the short chain alkyl benzene and/or alkyl naphthalene sulfonates are present in an amount of from about 50 wt-% to about 80 wt-% and comprises: sodium xylene sulfonate claim 2 , sodium toluene sulfonate claim 2 , sodium cumene sulfonate claim 2 , potassium toluene sulfonate claim 2 , ammonium xylene sulfonate claim 2 , calcium xylene sulfonate claim 2 , sodium alkyl naphthalene sulfonate claim 2 , sodium butyl naphthalene sulfonate or a combination thereof.4. The rinse aid composition of claim 1 , wherein the hardening agent further comprises urea claim 1 , ...
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