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Medical films and articles prepared from emulsion polymers

A technology of polymers and hard polymers, applied in medical science, bandages, absorbent pads, etc., can solve problems that are not suitable for commercial applications, and achieve the effect of water resistance and flexibility

Inactive Publication Date: 2006-08-02
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the disclosed examples of microemulsions require some expertise and specific stabilizers not required for the preparation of conventional emulsion polymers, and thus may not be suitable for commercial use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0016] According to another embodiment of the present invention, amine group-containing (i.e. amine-containing) monomers, including monomers containing side chains and having hydrophobic properties, can be effectively used as the polymer mixture of the present invention. Hard components, soft components, and combinations of hard and soft components. The amine groups may be quaternary amine (ie, quaternary ammonium) groups, amine oxide groups, and / or protonated tertiary amine groups.

[0017] US Patent No. 5,731,377 describes exemplary hard / soft emulsion polymer components that can be used to prepare the polymer mixtures claimed in the present invention, as well as methods for preparing such polymers. According to one embodiment of the present invention, the hard / soft polymer component of the polymer mixture has the rheological properties required for the preparation of the protective films and related articles of the present invention such that these films and articles have th...

Embodiment 1A

[0057] • 20 hard / / 80 soft polymer particle mixture, both hard and soft polymers are approximately 94 nanometers as measured by the BI-90 technique. (All ratios are solids to solids by weight)

[0058] Hard polymer composition = 27BA / 70.5Sty / 2MAA / 0.5 ureido methacrylate [hard, particle size about 94 nm]

[0059] Soft polymer composition = 60BA / 36.5Sty / 2.5MAA / 1 ureido methacrylate [soft, particle size about 94 nm]

[0060] Note: The release force to debond the hard / soft mixture from the surface is about 450 grams under the conditions shown. This is called "stickiness". The probe is brought into contact with the sample, and enters the sample until the force reaches 500 grams for 2 seconds, and then the probe is released at a predetermined rate of 0.2 mm / s to obtain the maximum force on the probe from the membrane sample surface.

Embodiment 1B

[0062] - Blend of 20 hard (42 nm) / / 80 soft polymer (363 nm), particle size measured by BI-90 technique.

[0063] Hard polymer composition = 27BA / 70.5Sty / 2MAA / 0.5 ureido methacrylate [hard, particle size about 42 nm]

[0064] Soft polymer composition = 60BA / 36.5Sty / 2.5MAA / 1 ureido methacrylate [soft, particle size about 363 nm]

[0065] • The overall composition of these polymers is the same as their respective hard / soft 94nm polymer analogs.

[0066] The peel force or "tack" of the hard / soft blend averaged about 36 grams.

[0067] These differences appear to be real because the standard deviation rules out overlap in the data. Therefore, these differences are real.

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Abstract

The present invention provides a protective film forming compositions useful as medical films and other related wound care and treatment articles, including liquid bandages are prepared from emulsion polymers, including a polymer blend including at least one hard emulsion polymer component and at least one soft emulsion polymer component, having the required dynamic storage modulus and mean Tg of the hard and soft polymer blend components.

Description

technical field [0001] This invention relates to film-forming polymers useful as medical films and for making other medical articles. In particular, the present invention relates to aqueous films prepared from mixtures of hard and soft emulsion polymers that are useful in the preparation of medical film-forming articles including, but not limited to, for covering and / or Or a membrane for treating wounds on mammalian skin. Background technique [0002] A liquid bandage is a medical product that protects a wound and promotes its healing by applying a liquid to an injured area and then allowing the liquid to dry to form a flexible film. Liquid bandages currently used or known to those skilled in the newer art have been designed from a variety of different chemical systems including: a) cyanoacrylate-based polymers including one-part systems and two-part systems, unfortunately Unfortunately, this polymer has limited applications; b) silicone polymers and organic polymers to wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L26/00
CPCA61L26/0004A61L15/18A61L2300/602A61L15/44A61L26/0052C08J5/18A61L15/225A61L26/0066C08L33/04C08K13/02
Inventor R·卡尔波维茨A·I·纳卡塔尼K·S·赖斯
Owner ROHM & HAAS CO
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