Silane-Modified Copolymer Adhesion Improver Volatility
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Solution Overview
Problem
Organosilicon compounds used as silane coupling agents are high in volatility and expensive due to their preparation from costly reactants, limiting their effectiveness and economic viability in bonding inorganic and organic materials.
Innovation Solution
A silane-modified copolymer with a polybutadiene skeleton, acid anhydride functional group, and hydrolysable silyl group is synthesized using relatively inexpensive reactants, which is low in volatility and highly adhesive to inorganic substrates, achieved through a hydrosilylation reaction with a platinum compound-containing catalyst.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organosilicon compounds are used as silane coupling agents, then adhesion to inorganic substrates is improved, but volatility increases and cost increases
Solution Approach 1:
The patent creates a composite structure by grafting organosilicon coupling agent molecules onto a polybutadiene polymer backbone. This forms a hybrid material that combines the adhesion properties of organosilicon compounds with the low volatility and cost advantages of polymer materials. The copolymer structure integrates both functional components into a single material system.
Solution Approach 2:
The patent changes the molecular weight parameter by transitioning from low molecular weight organosilicon monomers to high molecular weight copolymers. This parameter change fundamentally alters the volatility characteristic while preserving the adhesion functionality through the grafted organosilicon side chains.
2Reliability
If organosilicon compounds are used as silane coupling agents, then adhesion to inorganic substrates is improved, but cost increases
Solution Approach 1:
The patent creates a composite structure by grafting organosilicon coupling agent molecules onto a polybutadiene polymer backbone. This forms a hybrid material that combines the adhesion properties of organosilicon compounds with the low volatility and cost advantages of polymer materials. The copolymer structure integrates both functional components into a single material system.
Solution Approach 2:
The patent changes the molecular weight parameter by transitioning from low molecular weight organosilicon monomers to high molecular weight copolymers. This parameter change fundamentally alters the volatility characteristic while preserving the adhesion functionality through the grafted organosilicon side chains.
3Loss of substance
If copolymer with polybutadiene skeleton is synthesized, then volatility decreases and cost decreases, but adhesion functionality must be maintained
Solution Approach 1:
The patent segments the copolymer structure into distinct functional components: the polybutadiene backbone provides low volatility and cost advantages, while the grafted organosilicon side chains provide adhesion functionality. This segmentation allows each component to fulfill its specific function independently within the unified copolymer structure.
Solution Approach 2:
The patent creates a composite structure by grafting organosilicon coupling agent molecules onto a polybutadiene polymer backbone. This forms a hybrid material that combines the adhesion properties of organosilicon compounds with the low volatility and cost advantages of polymer materials. The copolymer structure integrates both functional components into a single material system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The silane-modified copolymer exhibits low volatility and enhanced adhesion when used in adhesive compositions, offering economic benefits and improved performance compared to traditional acid anhydride-containing organosilicon compounds.
Implementation Method 1
comprising the step of effecting hydrosilylation reaction of a copolymer comprising constituent units having the formulae (1), (3) and (4) with an organosilicon compound having the formula (5) in the presence of a platinum compound-containing catalyst
Data Source
AI summary
A silane-modified copolymer comprising constituent units of butadiene, constituent units having a hydrolysable silyl group, and constituent units having acid anhydride functionality is low volatile because of its molecular weight. It may be synthesized from relatively inexpensive reactants.