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Borate resistant films

A technology of sulfonic acid and methyl propane sulfonic acid, applied in detergent compounding agent, transportation and packaging, synthetic resin layered products, etc.

Active Publication Date: 2008-09-17
CELANESE INT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application discloses that the coating is water soluble and resistant to crosslinking, but the presence of certain chemicals such as sodium borate, sodium perborate, aldehydes and certain dyes renders it insoluble in water

Method used

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Examples

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Embodiment Construction

[0009] The present disclosure relates to water soluble polymers for packaging and encapsulating various products, including detergents and detergent components. The polymer is designed such that the packaged and encapsulated product is released from the package or capsule after the polymer package is placed and dissolved in water. The polymer is a copolymer of vinyl alcohol units and sulfonic acid units selected from 2-acrylamido-2-methylpropanesulfonic acid, 2-methacrylamido-2-methylpropanesulfonic acid and its combination. The polymers have been shown to provide improved water solubility characteristics in the presence of certain compounds, especially borate-containing compounds. The polymers are particularly suitable for packaging enzyme components for detergents. Such enzyme particles can be encapsulated with the membranes described herein by a variety of processes including fluid bed spray coating, pan coating, microemulsion encapsulation and other processes suitable to...

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Abstract

Water-soluble films useful for packaging and encapsulating various products are provided. The packaged and encapsulated products are released when the film dissolves in water. The films incorporate copolymers of vinyl alcohol units and sulfonic acid units at molecular weights and monomer incorporation levels providing improved water solubility characteristics in the presence of certain compounds, especially borate containing compounds. The films are particularly useful for packaging detergent products and encapsulating detergent component such as enzymes.

Description

technical field [0001] The present disclosure relates to a water soluble film comprising a copolymer of vinyl alcohol and sulfonic acid suitable for packaging or encapsulating various products and compounds that can be released when the film dissolves. Background technique [0002] Polyvinyl alcohol resins are widely used as film-forming materials. In general, the polymers have good strength and water solubility properties. Two factors affecting the solubility of polyvinyl alcohol are molecular weight and degree of hydrolysis. Commercially available films have a weight average molecular weight ranging from about 10,000 to 100,000 g / mol. The percent hydrolysis of the aforementioned commercial resins is generally about 70% to 100%. Because polyvinyl alcohol is produced by polymerizing vinyl acetate and then hydrolyzing the polymer, polyvinyl alcohol can, and often does, include residual acetate groups. Thus, the term "polyvinyl alcohol" herein includes copolymers of vinyl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D17/00C11D17/04C11D3/386C11D3/37
CPCC11D17/042Y10T428/2998C11D3/3753Y10T428/1352C11D17/0039C11D3/38672C11D3/3769C11D3/37C08F8/00B32B27/30C11D3/386
Inventor R·维卡里
Owner CELANESE INT CORP