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Water-soluble polyvinyl alcohol blend film, related methods, and related articles

A technology of water-soluble film and polyvinyl alcohol, which is applied in the direction of detergent composition, chemical equipment and method, detergent compounding agent, etc., and can solve the problems of short washing cycle and so on

Active Publication Date: 2017-08-01
MONOSOL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Notably, environmental concerns and energy costs are driving consumer demand for cooler wash water and shorter wash cycles

Method used

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  • Water-soluble polyvinyl alcohol blend film, related methods, and related articles
  • Water-soluble polyvinyl alcohol blend film, related methods, and related articles
  • Water-soluble polyvinyl alcohol blend film, related methods, and related articles

Examples

Experimental program
Comparison scheme
Effect test

example 6 to example 11

[0260] Examples 6 to 11: Dual Resin Blend Films

example 6

[0261] Examples 6 through 11 represent formed water soluble films each comprising a PVOH polymer or a blend of both of the PVOH copolymer resins A-E. A particular blend comprised PVOH Resin A and PVOH Resin E (Example 6), PVOH Resin A and PVOH Resin C (Example 7), PVOH Resin A and PVOH Resin D (Example 8), PVOH Resin B and PVOH Resin E (Example 9), PVOH Resin A and PVOH Resin B (Example 10) and PVOH Resin C and PVOH Resin E (Example 11). The blend films comprised 100 phr of the two resins combined to form a given blend within the range of relative weight ratios as set forth in Tables 2 to 7 below, while the plasticizer and other additives were as in relation to the Comparative Examples 1 to the amounts and types described in Comparative Example 5 were present. Aqueous compositions of the aforementioned blend film compositions were cast to form 3.0 mil ± 0.15 mil (or 76.2 micron ± 3.8 micron) film samples, which were tested for DC residual, TS, and MOD values ​​by the above me...

example 12

[0282] Example 12: Dual Resin Blend Film

[0283] Example 12 represents a series of water soluble films based on PVOH copolymers and three different plasticizers, including a blend of glycerin, sorbitol and dipropylene glycol. The PVOH copolymer blend is a first partially hydrolyzed PVOH copolymer comprising monomethyl maleate (sodium salt) comonomer (MMM) and acrylamidomethylpropanesulfonic acid (sodium salt) comonomer A variable ratio blend of a second partially hydrolyzed PVOH copolymer of (AMPS). The film comprised (i) its corresponding PVOH copolymer resin (100 parts by weight per hundred resin parts (phr)), (ii) glycerol plasticizer (16.2 phr), (iii) sorbitol plasticizer (10.4 phr ), (iv) dipropylene glycol plasticizer (10.4phr), (v) modified starch filler (about 2phr-4phr), (vi) surfactants and other processing aids (about 5phr-7phr) and (vii ) residual water. The total plasticizer loading was 37 phr. The amount of PVOH-co-MMM in the copolymer blend ranges from 0%...

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PUM

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Abstract

Disclosed herein are water-soluble films including a polyvinyl alcohol (PVOH) resin blend and optionally one or more additional components such as plasticizers, fillers, surfactants, and other additives. The PVOH resin blend includes a PVOH copolymer including one or more types of anionic monomer units such as a PVOH terpolymer and a PVOH polymer such as another PVOH anionic copolymer or a partially or completely hydrolyzed PVOH homopolymer. When the PVOH copolymer and PVOH polymer are blended in particular proportions and / or selected with regard to various criteria related to physical and chemical film properties, the resulting water-soluble film formed from the PVOH resin blend exhibits substantially improved aqueous dissolution properties, tensile strength properties, and / or tensile modulus properties.

Description

technical field [0001] The present invention generally relates to water soluble films comprising blends of polyvinyl alcohol (PVOH) resins and useful for contact with liquids, solids, or combinations thereof. The invention further relates to a method of making said film and packets and pouches made from said film, optionally filled with active components such as cleaning agents to make metered dose pouches. More specifically, the present invention relates to such films having one or more benefits, such as improved solubility characteristics for end use and / or resistance to changes in solubility characteristics upon contact with chemicals, together with suitable processability, A packet and a pouch. Background technique [0002] Water-soluble polymer films are commonly used as packaging materials to simplify the dispersion, pouring, dissolution, and dosing of materials to be delivered. For example, packets made of water-soluble films are commonly used to package household c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08J5/18
CPCC08J5/18C08L29/04C08L2205/025C08L2203/16C08J2329/04C08J2329/02C08L101/14C08J2300/14C08J2429/04C08L2205/03C11D3/3753C11D17/042
Inventor 史蒂文·G·弗里德里希大卫·M·李托马斯·J·约甘雷吉内·拉比克弗洛伦斯·凯瑟琳·库尔谢罗比·雷尼尔德·弗朗索瓦·科伊莱斯
Owner MONOSOL LLC