Alkoxylated alcohols as plasticizers for polyvinylacetate plastics
OwnerDirk Scharinventor
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Abstract
This invention relates to compositions containing polyvinyl acetate plastics and alkoxylated alcohols as plasticisers.
Claims10
A composition comprising
- (a) a polyvinyl acetate homo- or mixed polymerisate as a polyvinyl acetate plastic and
- (b) from 0.01 to 50 weight percent, referring to the total of components (a) and (b), of a mixture of several alkoxylated alcohols according to the formula I
- R1[—O—(R2—O)n—H]m I
- with n being different,
- where
- R1 is a C4- to C14-hydrocarbon, optionally a polyvalent one, which optionally can have 1 or 2 free OH groups,
- R2 is a saturated divalent C2- to C4-hydrocarbon which can be different for each n and/or m, and
- m is an integer from 1 to 4 and
- n is an integer from 4 to 18 which can be different for each m, where in the number average at least 60 percent of the alkoxylated alcohol molecules according to formula I in the composition have for each n of a molecule one n of from +2 to −2 of the number average of n.
A composition according to any one of the preceding claims, characterised in that
- n is an integer from 4 to 18, preferably 7 to 16, which can be different for each m, where in the number average at least 70 percent of the alkoxylated alcohol molecules according to formula I in the composition have for each n of a molecule one n of from +2 to −2 of the number average of n.
A composition according to any one of the preceding claims, characterised in that
- R1 is a saturated C5- to C7-hydrocarbon, preferably a linear one.
A composition according to any one of the preceding claims, characterised in that the polyvinyl acetate plastic consists of/or comprises at least 50 weight percent, preferably at least 80 weight percent, of monomeric units of the type
- —(—CH(—O—CO—CH3)—CH2—)—.
A composition according to any one of the preceding claims, characterised in that the composition is solid at 25° C. and normal pressure (1013 hPa), i.e. has a pour point of greater than 25° C., preferably greater than 50° C., at normal pressure (1013 hPa).
A composition according to any one of the preceding characterised in that the composition does not contain any additional alkoxylated alcohols besides the ones according to formula I.
A composition according to any one of the preceding claims, characterised in that the composition does not contain any additional plasticisers besides the alkoxylated alcohols according to formula I.
A composition according to any one of the preceding claims, characterised in that
- n is an integer from 4 to 18, which can be different for each m, where in the number average at least 70 percent of the alkoxylated alcohol molecules according to formula I in the composition have for each n of a molecule one n of from +2 to −2 of the number average of n and where at least 10 percent have one n of greater than +2 or lower than −2 of the number average of n.
Dependencies are inferred from the claim text.