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Hot melt adhesive composition comprising at least one particular aldehyde scavenger

A technology for hot melt adhesives and compositions, applied in the field of volatile organic compounds and hot melt adhesive compositions, can solve problems such as filter clogging, achieve good bond strength, avoid sedimentation and/or filter Blocking problems, effect of good adhesive properties

Inactive Publication Date: 2017-07-18
BOSTIK SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] In addition, settling of inorganic sorbent particles and / or degradation of organic sorbent particles may also cause filter clogging problems during application of the hot melt adhesive composition

Method used

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  • Hot melt adhesive composition comprising at least one particular aldehyde scavenger
  • Hot melt adhesive composition comprising at least one particular aldehyde scavenger
  • Hot melt adhesive composition comprising at least one particular aldehyde scavenger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0051] According to a specific embodiment of the present invention, the hot melt adhesive composition is HMPSA, which comprises:

[0052] A- 15% to 35% by weight of at least one thermoplastic polymer selected from polyolefins, styrene block copolymers (SBC), ethylene-vinyl acetate (EVA) and mixtures thereof;

[0053] B - 30% to 60% by weight of at least one tackifying resin;

[0054] C - 0.01% to 1% by weight, preferably 0.09% to 0.5% by weight, of at least one aldehyde scavenger having a molar weight of less than 500 g / mol and a melting point of less than 170°C, and in its structure An aromatic ring comprising an aromatic ring bonded directly or indirectly to at least one amine capping group as defined below, and preferably selected from 2-aminobenzamide, 3-aminobenzamide, 1,8-diaminonaphthalene, 2-amino Benzenesulfonamide, benzene-1,2-diamine and mixtures thereof;

[0055] D - 10% to 30% by weight of at least one plasticizer selected from naphthenic oils, paraffinic oils a...

Embodiment

[0273] Effect of aldehyde scavengers on two pure aldehyde volatiles:

[0274] Preparation of volatile aldehydes in the gas phase:

[0275] Prepare four vials A1, A2, A3 and A4 as follows:

[0276] Introduce 15 μL of butyraldehyde (liquid at 23 °C, boiling point (bp) = 74.8 °C) with a syringe into 20 mL vial A1 sealed with an airtight rubber cap, and then fill the vial with nitrogen. In the same manner, a second vial A2 was prepared.

[0277] Introduce 15 μL of benzaldehyde (liquid at 23 °C, bp = 178.1 °C) with a syringe into a second 20 mL vial A3 sealed with an airtight rubber cap, which is then filled with nitrogen. In the same manner, a second vial A4 was prepared.

[0278] The four vials A1 , A2, A3 and A4 were left standing at 23°C for at least 12 hours to allow the redistribution of the gas phase of the volatile aldehyde to equilibrate evenly in the vials.

[0279] Preparation of Vials A5 and A6 Containing Volatile Aldehydes and Without Aldehyde Scavenger C (Refer...

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Abstract

The present invention relates to a hot melt adhesive composition comprising at least one particular aldehyde scavenger, and the use of said aldehyde scavenger(s) to remove or reduce the volatile organic compound(s) (VOC), particularly volatile aldehyde(s) of a hot melt adhesive composition. The hot melt adhesive compositions according to the invention emit low odor during and after their manufacture and application, and are thus particularly useful to manufacture low odor disposable nonwoven absorbent articles.

Description

technical field [0001] The present invention relates to a hot melt adhesive composition comprising at least one specific aldehyde scavenger as further defined below, and said aldehyde scavenger removes or reduces volatile organic compounds (VOC) of the hot melt adhesive composition, In particular the use of volatile aldehydes. [0002] The hot-melt adhesive composition according to the invention emits low odor during and after its production and application, and is therefore particularly useful for the production of low-odor disposable nonwoven absorbent articles. Background technique [0003] Disposable nonwoven absorbent articles have wide acceptance for infant, toddler, incontinent adult and feminine care applications. [0004] The term "disposable" as used herein describes an absorbent article which is intended to be disposed of after a single use. Such articles are not intended to be laundered or reused as absorbent articles. [0005] The term "nonwoven" is used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/00C09J153/02C09J123/08C09J11/08C09J11/06C09J7/00
CPCC09J11/06C09J11/08C09J123/00C09J123/0853C09J153/02C09J153/025C08L2205/035C08K5/20C09J123/02C08K5/18C09J9/00C08L25/08A61L15/58C09J201/00B32B5/022B32B7/12B32B2307/726C09J153/00
Inventor N.于赛因
Owner BOSTIK SA
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