Aging Stability of Neoprene Latex

Andersen, Donald E.; Arnold, R.

doi:10.1021/ie50528a049

Cited by 10 publications

(2 citation statements)

References 3 publications

(3 reference statements)

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“…At 40°C. polychloroprene polymer chains grow mainly lay the 1,4 addition (I) of chlorobutadienc free radicals (3,28), although about one monomer unit in 67 (1.5 mole %) enters the growing chain by 1,2 addition (II) (2,20). Tiie chlorine in the 1,2 structure is very reactive and, in a latex, readily undergoes alkaline hydrolysis with the elimination of chloride ion.…”

Section: Changes In Structure During Agingmentioning

confidence: 99%

Aging Stability of Neoprene Latex. Relation Between Crosslinking and Hydrolysis of Allylic Chlorine

Andersen¹,

Kovacic²

1955

Ind. Eng. Chem.

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Section: Changes In Structure During Agingmentioning

confidence: 99%

Aging Stability of Neoprene Latex. Relation Between Crosslinking and Hydrolysis of Allylic Chlorine

Andersen¹,

Kovacic²

1955

Ind. Eng. Chem.

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“…Chloroprene latex, a type of water-based emulsion chloroprene rubber adhesive, is composed of polychloroprene micelles and various types of emulsifiers [ 1 , 2 , 3 , 4 ]. This versatile adhesive is widely utilized in bonding fabrics, leather, wood, plastics, glass, and other materials, playing a crucial role in various industries worldwide [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Chloroprene Latexes Modified with Vinyl-POSS

Chen,

Wu,

Wang

et al. 2024

Polymers

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Water-based chloroprene latex is a solvent-free, environmentally friendly adhesive. Currently, its market demand is growing rapidly. However, there are problems such as a lack of heat resistance and poor mechanical properties, which limit its application. The introduction of vinyl-POSS (OVS) into the resin structure can effectively improve the thermal stability of chloroprene adhesives. In this paper, modified waterborne chloroprene latex was prepared by copolymerization of methyl methacrylate and OVS with chloroprene latex. The results showed that vinyl-POSS was successfully grafted onto the main chain of the waterborne chloroprene latex, and the modified waterborne chloroprene latex had good storage stability. With the increase in vinyl-POSS, the tensile strength of the chloroprene latex firstly increased and then decreased, the tensile property (peel strength of 20.2 kgf) was maintained well at a high temperature (100 °C), and the thermal stability of the chloroprene latex was improved. When the addition amount was 4%, the comprehensive mechanical properties were their best. This study provides a new idea for the construction of a new and efficient waterborne chloroprene latex system and provides more fields for the practical application of waterborne chloroprene latex. This newly developed vinyl-POSS modified chloroprene latex has great application potential for use in home furniture, bags, and seat cushions.

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1‐chlorobutadiene–butadiene rubber. IV. Increasing the hydroxyl group content in the rubber

Yamashita

Sando

Kohjiya

1979

J of Applied Polymer Sci

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SynopsisThe hydroxyl group content in 1-chlorobutadiene-butadiene rubber (CB-BR) wqs increased by the following two methods: (1) heating of the CB-BR latex to hydrolyze the unstable chlorine in CB-BR and (2) introduction of hydroxyl by the Menschutkin-type reaction between 2-dimethylaminoethanol (DMAE) and the chlorine in CB-BR. By heating the latex at 7OoC for 12 hr, 55% chlorine was hydrolyzed to result in a marked increase in hydroxyl group content in CB-BR. This may be explained by the microstructure of the I-chlorobutadiene (CB) units in CB-BR, i.e., at least 55% chlorine is situated in the CB units of the l,4-configuration. Heat-treated CB-BR was found to contain a small amount of conjugated triene structure by UV spectroscopy, which indicates that elimination of some unstable chlorine as hydrogen chloride occurs during latex heating. By reaction with DMAE, 44% chlorine was converted into hydroxyl in toluene a t 27OC. CB-BR compounded with DMAE does not suffer from gelation by milling on an open roll. Thus, by these methods, high molecular weight butadiene rubber having various concentrations of hydroxyl groups is obtained.

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Aging Stability of Neoprene Latex

Cited by 10 publications

References 3 publications

Aging Stability of Neoprene Latex. Relation Between Crosslinking and Hydrolysis of Allylic Chlorine

Aging Stability of Neoprene Latex. Relation Between Crosslinking and Hydrolysis of Allylic Chlorine

Preparation and Characterization of Chloroprene Latexes Modified with Vinyl-POSS

1‐chlorobutadiene–butadiene rubber. IV. Increasing the hydroxyl group content in the rubber

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