Aminoplastic resins and their use as a crosslinking agent for cellulose
AssigneeSequa Chemicals, Inc.
InventorsDidier Wilhelm, Alain Blanc, William C. Floyd
Life of this patent
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Abstract
Aminoplastic resin based on one or more amino derivatives and one or more aldehydes in which the amino derivative is melamine, glycoluril or their mixture in variable proportions and that the aldehyde is a product of formula (I) R--CHO where R=a dialkoxymethyl, 1,3-dioxolan 2-yl group optionally substituted on the vertex 4 and/or 5 by one or more alkyl groups or a 1,3-dioxan 2-yl group optionally substituted on vertices 4, 5 and/or 6 by one or more alkyl groups, optionally mixed with glyoxal, preparation process and use as a crosslinking agent for cellulose.
Claims22
Aminoplastic resin based on one or more amino derivatives and one or more aldehydes, characterized in that the amino derivative is melamine, glycoluril or their mixture in variable proportions and that the aldehyde is a product of formula (I)
- R--CHO (I)
- in which R represents a dialkoxymethyl group, 1,3-dioxolan 2-yl group optionally substituted on the vertex 4 and/or 5 by one or more alkyl groups or a 1,3-dioxan 2-yl group optionally substituted on the vertices 4, 5 and/or 6 by one or more alkyl groups, optionally mixed with glyoxal.
Resin according to formula (IV) ##STR6## in which R'.sub.1, R'.sub.2, R'.sub.3, identical or different, represent either a hydrogen atom,
- or a radical of formula (V)
- --CH(OH)--R (V)
- where R has the same meaning as in formula (I)
- or a radical of formula (VI)
- --CH(OR")--R (VI)
- R having the same meaning as in formula (I), and R" designating a C.sub.1 -C.sub.4 alkyl radical,
- at least one of R'.sub.1, R'.sub.2, R'.sub.3 being different from the hydrogen atom.
Dependencies are inferred from the claim text.