Polyolefin Side-Chain Composition to Suppress Temperature-Cycle Precipitation
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Solution Overview
Problem
Conventional polyolefins used in plasticizers for electronic materials face precipitation issues after temperature cycles, and those used in cosmetics and lubricating oils show decreased stability and stickiness under harsh temperature conditions, failing to provide a luxurious feel and rich texture.
Innovation Solution
A polyolefin with a specific number average molecular weight and side chain carbon distribution is developed, produced through polymerization with a Lewis acid catalyst, to maintain stability and reduce stickiness across temperature cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional polyolefins are used as plasticizers for electronic materials, then they provide basic plasticizing function, but additive precipitation occurs after temperature cycles from -20°C to 90°C
Solution Approach 1:
The patent applies parameter changes by precisely controlling the number average molecular weight (Mn) within 250-10,000 and the side chain carbon atom ratio within 1-40%. These specific parameter ranges prevent additive precipitation while maintaining plasticizing functionality under temperature cycles from -20°C to 90°C.
Solution Approach 2:
The patent creates a composite structure by combining polyolefin base chains with specific side chains having controlled carbon atom lengths. This composite molecular structure enhances compatibility between the polyolefin and additives, preventing precipitation during temperature cycling while preserving the plasticizing effect.
2Reliability
If high-molecular-weight base materials for cosmetics are used, then water evaporation prevention is improved, but stickiness occurs
Solution Approach 1:
The patent optimizes the balance between water evaporation prevention and stickiness by controlling the number average molecular weight (Mn) within 250-10,000 and the side chain carbon atom ratio within 1-40%. This parameter optimization enables effective water evaporation prevention while maintaining a non-sticky, luxurious feel on skin.
3Reliability
If cosmetics containing large amounts of solid components (wax, oil and fat, higher alcohol) are used, then moisturizing effect is improved, but crystallization proceeds under temperature cycles from -20°C to 50°C
Solution Approach 1:
The patent acts as an intermediary substance that prevents crystallization of solid components (wax, oil and fat, higher alcohol) in cosmetic formulations. The polyolefin with controlled molecular weight and side chain structure serves as a mediator that maintains composition stability during temperature cycles from -20°C to 50°C while preserving moisturizing effects.
Solution Approach 2:
The patent creates a stable composite system by combining the polyolefin with solid cosmetic components. The specific molecular structure (Mn: 250-10,000, side chain ratio: 1-40%) forms a compatible mixture that prevents crystallization during temperature cycling while maintaining the moisturizing properties of the solid components.
4Reliability
If conventional polyolefins are used as lubricants, then basic lubricating function is provided, but lubricity decreases after temperature cycles from -20°C to 90°C
Solution Approach 1:
The patent optimizes lubricity stability under temperature cycles by controlling the number average molecular weight (Mn) within 250-10,000 and the side chain carbon atom ratio within 1-40%. These parameter specifications ensure consistent lubricating performance from -20°C to 90°C without degradation.
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 polyolefin effectively suppresses additive precipitation, enhances transdermal water evaporation, and maintains lubricity and luxurious feel in cosmetics and lubricants, even under extreme temperature conditions.
Implementation Method 1
conventional polyolefins containing additives used in plasticizers for electronic materials sometimes show precipitation of the aforementioned additives
Implementation Method 2
the effect of suppressing transdermal water evaporation
Implementation Method 3
conventional polyolefins containing additives used in lubricating oils sometimes show a decrease in lubricity after temperature cycles
Data Source
AI summary
The present invention provides a polyolefin having a number average molecular weight of 250 to 10,000 and obtained from a linear olefin monomer having 8 to 20 carbon atoms, wherein a rate of side chains having (n−3) carbon atoms or 5 lower than (n−3) carbon atoms is 1 to 40%, as calculated from the formula (1):rate of side chains having (n-3) carbon atoms or lower than (n- 3) carbon atoms (%)=[Nx/(Nx+Ny)×2n-3]/3×100[symbols in the formula (1) are as defined in the DESCRIPTION].