A duplex container comprising a resin film or sheet formed into a bag by heat sealing, and a partition formed inside thereof, wherein a heat sealing unit is composed of a specific propylene resin composition obtained by multi-step polymerizing.
1 - Polycondensation, also referred to as "step polymerization".
1 - Polycondensation, also referred to as "step polymerization".
The distinction between step-growth polymerization and chain-growth polymerization was introduced by Paul Flory in 1953.[4]
PEEK polymers are obtained by step-growth polymerization by the dialkylation of bisphenolate salts.
Synthesis: PEEK polymers are produced by step-growth polymerization by the dialkylation of bisphenolate salts.
The polymers obtained by chain polymerisation are generally addition polymers while those obtained by step polymerisation are generally condensation polymers.
Polyesters and polyamides are examples of condensation polymers formed by step-growth polymerization.
The polymerization of P2 takes place by stage polymerization, wherein a monomer composition comprising M2 is polymerized in a first stage, and a monomer composition comprising M1 is polymerized in a second stage.
Carothers worked out the theory of step-growth polymerization and derived the Carothers equation which relates the average degree of polymerization to the fractional conversion (or yield) of monomer into polymer.
A duplex container comprising a resin film or sheet formed into a bag by heat sealing, and a partition formed inside thereof, wherein a heat sealing unit is composed of a specific propylene resin composition obtained by multi-step polymerizing.
1 - Polycondensation, also referred to as "step polymerization".
1 - Polycondensation, also referred to as "step polymerization".
The distinction between step-growth polymerization and chain-growth polymerization was introduced by Paul Flory in 1953.[4]
This invention provides the preparation of water-dispersible polyester/acrylic hybrids via a two-stage emulsion polymerization process.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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