Process for incorporating an active substance in a moulded plastic part

• US 6,232,378 B1
• Filed: 03/23/1999
• Issued: 05/15/2001
• Est. Priority Date: 09/23/1996
• Status: Expired due to Fees

• Current Assignee: DSM B.V.
• Original Assignee: DSM B.V.
• Inventors: de Brabander-van den Berg, Ellen M. M., Mostert, Hubertus A. M., Froehling, Peter E.
• Primary Examiner(s): SANDERS, KRIELLION ANTIONETTE
• Application Number:
  US09/275,140
• Time in Patent Office: 784 Days
• Field of Search: 524/190
• US Class Current: 524/190
• CPC Class Codes: C08G 83/003 Dendrimers
• CPC Class Codes: C08K 5/0008 Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
• CPC Class Codes: C08L 101/005 Dendritic macromolecules
• CPC Class Codes: C08L 2203/12 used for fibers
• CPC Class Codes: C08L 23/00 Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 23/02 not modified by chemical after-treatment
• CPC Class Codes: C08L 23/10 Homopolymers or copolymers of propene
• CPC Class Codes: C08L 2666/22 Macromolecular compounds not provided for in C08L2666/16 - C08L2666/20
• CPC Class Codes: C08L 79/02 Polyamines
• CPC Class Codes: C08L 87/00 Compositions of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
• CPC Class Codes: D01F 1/10 Other agents for modifying properties
• CPC Class Codes: D01F 6/46 of polyolefins
• CPC Class Codes: D06P 3/00 Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
• CPC Class Codes: D06P 3/79 Polyolefins

Abstract

The invention provides a process for incorporating an active substance in an object comprised partly or entirely of plastic which contains a dendrimer.

Claims

1. A process for incorporating an active substance in an object comprised partly or entirely of plastic which contains a dendrimer, said process comprising

providing said object wherein said plastic contains a dendrimer with terminal groups that are compatible with the plastic;

and

bringing said object into contact with an active substance.

2. A process according to claim 1, wherein said dendrimer comprises a completely branched dendrimer, a dendrimer with defects in the branched structure, a dendrimer with an incomplete degree of branching or an asymmetrically branched dendrimer.

3. A process according to claim 1 or claim 2, wherein the dendrimer having terminal groups that are compatible with the plastic is obtained by modifying the terminal groups of a dendrimer with a compound to yield said modified terminal groups that are compatible with the plastic.

4. A process according to claim 3, wherein the modifying compound modifies the terminal groups with an alkyl group.

5. A process according to claim 4, wherein the alkyl group contains 6-50 C atoms.

6. A process according to claim 3, wherein at least 30% of the terminal groups have been reacted with the modifying compound.

7. A process according to claim 1 or 2, wherein a dendrimer of the 2nd up to and including the 5th generation is used.

8. A process according to claim 1, wherein polypropylene comprises the plastic of the object.

9. A process according to claim 1, wherein the object comprises fibres, and wherein said fibres are used as molded parts.

10. A process according to claim 8 or 9, wherein the plastic contains a polypropylene imine dendrimer.

11. A process according to claim 10, the dendrimer contains non-polar fatty acid end groups.

12. A molded plastic part to be used as the object in the process according to claim 3.

13. A molded plastic composition of the molded plastic part to be used as the object in the process according to claim 3.

14. A process according to claim 1, wherein said plastic comprises isotactic polypropylene, and said dendrimer comprises an amine-terminated polypropylene imine dendrimer, and a mixture of said plastic and said dendrimer was extruded to obtain fibers, and said fibers were contacted with an active substance whereby said fibers incorporated said active substance.

15. a process according to claim 1, wherein said active substance is a dye.